65852.2.

 (a) (1) A local agency may, by ordinance, provide for the creation of accessory dwelling units in areas zoned to allow single-family or multifamily dwelling residential use. The ordinance shall do all of the following:

(A) Designate areas within the jurisdiction of the local agency where accessory dwelling units may be permitted. The designation of areas may be based on the adequacy of water and sewer services and the impact of accessory dwelling units on traffic flow and public safety. A local agency that does not provide water or sewer services shall consult with the local water or sewer service provider regarding the adequacy of water and sewer services before designating an area where accessory dwelling units may be permitted.

(B) (i) Impose objective standards on accessory dwelling units that include, but are not limited to, parking, height, setback, landscape, architectural review, maximum size of a unit, and standards that prevent adverse impacts on any real property that is listed in the California Register of Historical Resources. These standards shall not include requirements on minimum lot size.

(ii) Notwithstanding clause (i), a local agency may reduce or eliminate parking requirements for any accessory dwelling unit located within its jurisdiction.

(C) Provide that accessory dwelling units do not exceed the allowable density for the lot upon which the accessory dwelling unit is located, and that accessory dwelling units are a residential use that is consistent with the existing general plan and zoning designation for the lot.

(D) Require the accessory dwelling units to comply with all of the following:

(i) Except as provided in Section 65852.26, the accessory dwelling unit may be rented separate from the primary residence, but may not be sold or otherwise conveyed separate from the primary residence.

(ii) The lot is zoned to allow single-family or multifamily dwelling residential use and includes a proposed or existing dwelling.

(iii) The accessory dwelling unit is either attached to, or located within, the proposed or existing primary dwelling, including attached garages, storage areas or similar uses, or an accessory structure or detached from the proposed or existing primary dwelling and located on the same lot as the proposed or existing primary dwelling, including detached garages.

(iv) If there is an existing primary dwelling, the total floor area of an attached accessory dwelling unit shall not exceed 50 percent of the existing primary dwelling.

(v) The total floor area for a detached accessory dwelling unit shall not exceed 1,200 square feet.

(vi) No passageway shall be required in conjunction with the construction of an accessory dwelling unit.

(vii) No setback shall be required for an existing living area or accessory structure or a structure constructed in the same location and to the same dimensions as an existing structure that is converted to an accessory dwelling unit or to a portion of an accessory dwelling unit, and a setback of no more than four feet from the side and rear lot lines shall be required for an accessory dwelling unit that is not converted from an existing structure or a new structure constructed in the same location and to the same dimensions as an existing structure.

(viii) Local building code requirements that apply to detached dwellings, except that the construction of an accessory dwelling unit shall not constitute a Group R occupancy change under the local building code, as described in Section 310 of the California Building Code (Title 24 of the California Code of Regulations), unless the building official or enforcement agency of the local agency makes a written finding based on substantial evidence in the record that the construction of the accessory dwelling unit could have a specific, adverse impact on public health and safety. Nothing in this clause shall be interpreted to prevent a local agency from changing the occupancy code of a space that was unhabitable space or was only permitted for nonresidential use and was subsequently converted for residential use pursuant to this section.

(ix) Approval by the local health officer where a private sewage disposal system is being used, if required.

(x) (I) Parking requirements for accessory dwelling units shall not exceed one parking space per accessory dwelling unit or per bedroom, whichever is less. These spaces may be provided as tandem parking on a driveway.

(II) Off­street parking shall be permitted in setback areas in locations determined by the local agency or through tandem parking, unless specific findings are made that parking in setback areas or tandem parking is not feasible based upon specific site or regional topographical or fire and life safety conditions.

(III) This clause shall not apply to an accessory dwelling unit that is described in subdivision (d).

(xi) When a garage, carport, or covered parking structure is demolished in conjunction with the construction of an accessory dwelling unit or converted to an accessory dwelling unit, the local agency shall not require that those offstreet parking spaces be replaced.

(xii) Accessory dwelling units shall not be required to provide fire sprinklers if they are not required for the primary residence. The construction of an accessory dwelling unit shall not trigger a requirement for fire sprinklers to be installed in the existing primary dwelling.

(2) The ordinance shall not be considered in the application of any local ordinance, policy, or program to limit residential growth.

(3) (A) A permit application for an accessory dwelling unit or a junior accessory dwelling unit shall be considered and approved ministerially without discretionary review or a hearing, notwithstanding Section 65901 or 65906 or any local ordinance regulating the issuance of variances or special use permits. The permitting agency shall either approve or deny the application to create or serve an accessory dwelling unit or a junior accessory dwelling unit within 60 days from the date the permitting agency receives a completed application if there is an existing single-family or multifamily dwelling on the lot. If the permit application to create or serve an accessory dwelling unit or a junior accessory dwelling unit is submitted with a permit application to create a new single-family or multifamily dwelling on the lot, the permitting agency may delay approving or denying the permit application for the accessory dwelling unit or the junior accessory dwelling unit until the permitting agency approves or denies the permit application to create the new single-family or multifamily dwelling, but the application to create or serve the accessory dwelling unit or junior accessory dwelling unit shall be considered without discretionary review or hearing. If the applicant requests a delay, the 60-day time period shall be tolled for the period of the delay. If the local agency has not approved or denied the completed application within 60 days, the application shall be deemed approved. A local agency may charge a fee to reimburse it for costs incurred to implement this paragraph, including the costs of adopting or amending any ordinance that provides for the creation of an accessory dwelling unit.

(B) If a permitting agency denies an application for an accessory dwelling unit or junior accessory dwelling unit pursuant to subparagraph (A), the permitting agency shall, within the time period described in subparagraph (A), return in writing a full set of comments to the applicant with a list of items that are defective or deficient and a description of how the application can be remedied by the applicant.

(4) The ordinance shall require that a demolition permit for a detached garage that is to be replaced with an accessory dwelling unit be reviewed with the application for the accessory dwelling unit and issued at the same time.

(5) The ordinance shall not require, and the applicant shall not be otherwise required, to provide written notice or post a placard for the demolition of a detached garage that is to be replaced with an accessory dwelling unit, unless the property is located within an architecturally and historically significant historic district.

(6) An existing ordinance governing the creation of an accessory dwelling unit by a local agency or an accessory dwelling ordinance adopted by a local agency shall provide an approval process that includes only ministerial provisions for the approval of accessory dwelling units and shall not include any discretionary processes, provisions, or requirements for those units, except as otherwise provided in this subdivision. If a local agency has an existing accessory dwelling unit ordinance that fails to meet the requirements of this subdivision, that ordinance shall be null and void and that agency shall thereafter apply the standards established in this subdivision for the approval of accessory dwelling units, unless and until the agency adopts an ordinance that complies with this section.

(7) No other local ordinance, policy, or regulation shall be the basis for the delay or denial of a building permit or a use permit under this subdivision.

(8) This subdivision establishes the maximum standards that local agencies shall use to evaluate a proposed accessory dwelling unit on a lot that includes a proposed or existing single-family dwelling. No additional standards, other than those provided in this subdivision, shall be used or imposed, including an owner-occupant requirement, except that a local agency may require that the property be used for rentals of terms 30 days or longer.

(9) A local agency may amend its zoning ordinance or general plan to incorporate the policies, procedures, or other provisions applicable to the creation of an accessory dwelling unit if these provisions are consistent with the limitations of this subdivision.

(10) An accessory dwelling unit that conforms to this subdivision shall be deemed to be an accessory use or an accessory building and shall not be considered to exceed the allowable density for the lot upon which it is located, and shall be deemed to be a residential use that is consistent with the existing general plan and zoning designations for the lot. The accessory dwelling unit shall not be considered in the application of any local ordinance, policy, or program to limit residential growth.

(b) (1) When a local agency that has not adopted an ordinance governing accessory dwelling units in accordance with subdivision (a) receives an application for a permit to create or serve an accessory dwelling unit pursuant to this subdivision, the local agency shall approve or disapprove the application ministerially without discretionary review pursuant to subdivision (a). The permitting agency shall either approve or deny the application to create or serve an accessory dwelling unit or a junior accessory dwelling unit within 60 days from the date the permitting agency receives a completed application if there is an existing single-family or multifamily dwelling on the lot. If the permit application to create or serve an accessory dwelling unit or a junior accessory dwelling unit is submitted with a permit application to create or serve a new single-family or multifamily dwelling on the lot, the permitting agency may delay approving or denying the permit application for the accessory dwelling unit or the junior accessory dwelling unit until the permitting agency approves or denies the permit application to create or serve the new single-family or multifamily dwelling, but the application to create or serve the accessory dwelling unit or junior accessory dwelling unit shall still be considered ministerially without discretionary review or a hearing. If the applicant requests a delay, the 60-day time period shall be tolled for the period of the delay. If the local agency has not approved or denied the completed application within 60 days, the application shall be deemed approved.

(2) If a permitting agency denies an application for an accessory dwelling unit or junior accessory dwelling unit pursuant to paragraph (1), the permitting agency shall, within the time period described in paragraph (1), return in writing a full set of comments to the applicant with a list of items that are defective or deficient and a description of how the application can be remedied by the applicant.

(c) (1) Subject to paragraph (2), a local agency may establish minimum and maximum unit size requirements for both attached and detached accessory dwelling units.

(2) Notwithstanding paragraph (1), a local agency shall not establish by ordinance any of the following:

(A) A minimum square footage requirement for either an attached or detached accessory dwelling unit that prohibits an efficiency unit.

(B) A maximum square footage requirement for either an attached or detached accessory dwelling unit that is less than either of the following:

(i) 850 square feet.

(ii) 1,000 square feet for an accessory dwelling unit that provides more than one bedroom.

(C) Any requirement for a zoning clearance or separate zoning review or any other minimum or maximum size for an accessory dwelling unit, size based upon a percentage of the proposed or existing primary dwelling, or limits on lot coverage, floor area ratio, open space, front setbacks, and minimum lot size, for either attached or detached dwellings that does not permit at least an 800 square foot accessory dwelling unit with four-foot side and rear yard setbacks to be constructed in compliance with all other local development standards.

(D) Any height limitation that does not allow at least the following, as applicable:

(i) A height of 16 feet for a detached accessory dwelling unit on a lot with an existing or proposed single family or multifamily dwelling unit.

(ii) A height of 18 feet for a detached accessory dwelling unit on a lot with an existing or proposed single family or multifamily dwelling unit that is within one-half of one mile walking distance of a major transit stop or a high-quality transit corridor, as those terms are defined in Section 21155 of the Public Resources Code. A local agency shall also allow an additional two feet in height to accommodate a roof pitch on the accessory dwelling unit that is aligned with the roof pitch of the primary dwelling unit.

(iii) A height of 18 feet for a detached accessory dwelling unit on a lot with an existing or proposed multifamily, multistory dwelling.

(iv) A height of 25 feet or the height limitation in the local zoning ordinance that applies to the primary dwelling, whichever is lower, for an accessory dwelling unit that is attached to a primary dwelling. This clause shall not require a local agency to allow an accessory dwelling unit to exceed two stories.

(d) Notwithstanding any other law, and whether or not the local agency has adopted an ordinance governing accessory dwelling units in accordance with subdivision (a), all of the following shall apply:

(1) The local agency shall not impose any parking standards for an accessory dwelling unit in any of the following instances:

(A) Where the accessory dwelling unit is located within one-half mile walking distance of public transit.

(B) Where the accessory dwelling unit is located within an architecturally and historically significant historic district.

(C) Where the accessory dwelling unit is part of the proposed or existing primary residence or an accessory structure.

(D) When onstreet parking permits are required but not offered to the occupant of the accessory dwelling unit.

(E) When there is a car share vehicle located within one block of the accessory dwelling unit.

(F) When a permit application for an accessory dwelling unit is submitted with a permit application to create a new single-family dwelling or a new multifamily dwelling on the same lot, provided that the accessory dwelling unit or the parcel satisfies any other criteria listed in this paragraph.

(2) The local agency shall not deny an application for a permit to create an accessory dwelling unit due to the correction of nonconforming zoning conditions, building code violations, or unpermitted structures that do not present a threat to public health and safety and are not affected by the construction of the accessory dwelling unit.

(e) (1) Notwithstanding subdivisions (a) to (d), inclusive, a local agency shall ministerially approve an application for a building permit within a residential or mixed-use zone to create any of the following:

(A) One accessory dwelling unit and one junior accessory dwelling unit per lot with a proposed or existing single-family dwelling if all of the following apply:

(i) The accessory dwelling unit or junior accessory dwelling unit is within the proposed space of a single-family dwelling or existing space of a single-family dwelling or accessory structure and may include an expansion of not more than 150 square feet beyond the same physical dimensions as the existing accessory structure. An expansion beyond the physical dimensions of the existing accessory structure shall be limited to accommodating ingress and egress.

(ii) The space has exterior access from the proposed or existing single-family dwelling.

(iii) The side and rear setbacks are sufficient for fire and safety.

(iv) The junior accessory dwelling unit complies with the requirements of Section 65852.22.

(B) One detached, new construction, accessory dwelling unit that does not exceed four-foot side and rear yard setbacks for a lot with a proposed or existing single-family dwelling. The accessory dwelling unit may be combined with a junior accessory dwelling unit described in subparagraph (A). A local agency may impose the following conditions on the accessory dwelling unit:

(i) A total floor area limitation of not more than 800 square feet.

(ii) A height limitation as provided in clause (i), (ii), or (iii) as applicable, of subparagraph (D) of paragraph (2) of subdivision (c).

(C) (i) Multiple accessory dwelling units within the portions of existing multifamily dwelling structures that are not used as livable space, including, but not limited to, storage rooms, boiler rooms, passageways, attics, basements, or garages, if each unit complies with state building standards for dwellings.

(ii) A local agency shall allow at least one accessory dwelling unit within an existing multifamily dwelling and shall allow up to 25 percent of the existing multifamily dwelling units.

(D) (i) Not more than two accessory dwelling units that are located on a lot that has an existing or proposed multifamily dwelling, but are detached from that multifamily dwelling and are subject to a height limitation in clause (i), (ii), or (iii), as applicable, of subparagraph (D) of paragraph (2) of subdivision (c) and rear yard and side setbacks of no more than four feet.

(ii) If the existing multifamily dwelling has a rear or side setback of less than four feet, the local agency shall not require any modification of the existing multifamily dwelling as a condition of approving the application to construct an accessory dwelling unit that satisfies the requirements of this subparagraph.

(2) A local agency shall not require, as a condition for ministerial approval of a permit application for the creation of an accessory dwelling unit or a junior accessory dwelling unit, the correction of nonconforming zoning conditions.

(3) The installation of fire sprinklers shall not be required in an accessory dwelling unit if sprinklers are not required for the primary residence. The construction of an accessory dwelling unit shall not trigger a requirement for fire sprinklers to be installed in the existing multifamily dwelling.

(4) A local agency shall require that a rental of the accessory dwelling unit created pursuant to this subdivision be for a term longer than 30 days.

(5) A local agency may require, as part of the application for a permit to create an accessory dwelling unit connected to an onsite wastewater treatment system, a percolation test completed within the last five years, or, if the percolation test has been recertified, within the last 10 years.

(6) Notwithstanding subdivision (c) and paragraph (1) a local agency that has adopted an ordinance by July 1, 2018, providing for the approval of accessory dwelling units in multifamily dwelling structures shall ministerially consider a permit application to construct an accessory dwelling unit that is described in paragraph (1), and may impose objective standards including, but not limited to, design, development, and historic standards on said accessory dwelling units. These standards shall not include requirements on minimum lot size.

(f) (1) Fees charged for the construction of accessory dwelling units shall be determined in accordance with Chapter 5 (commencing with Section 66000) and Chapter 7 (commencing with Section 66012).

(2) An accessory dwelling unit shall not be considered by a local agency, special district, or water corporation to be a new residential use for purposes of calculating connection fees or capacity charges for utilities, including water and sewer service, unless the accessory dwelling unit was constructed with a new single-family dwelling.

(3) (A) A local agency, special district, or water corporation shall not impose any impact fee upon the development of an accessory dwelling unit less than 750 square feet. Any impact fees charged for an accessory dwelling unit of 750 square feet or more shall be charged proportionately in relation to the square footage of the primary dwelling unit.

(B) For purposes of this paragraph, “impact fee” has the same meaning as the term “fee” is defined in subdivision (b) of Section 66000, except that it also includes fees specified in Section 66477. “Impact fee” does not include any connection fee or capacity charge charged by a local agency, special district, or water corporation.

(4) For an accessory dwelling unit described in subparagraph (A) of paragraph (1) of subdivision (e), a local agency, special district, or water corporation shall not require the applicant to install a new or separate utility connection directly between the accessory dwelling unit and the utility or impose a related connection fee or capacity charge, unless the accessory dwelling unit was constructed with a new single-family dwelling.

(5) For an accessory dwelling unit that is not described in subparagraph (A) of paragraph (1) of subdivision (e), a local agency, special district, or water corporation may require a new or separate utility connection directly between the accessory dwelling unit and the utility. Consistent with Section 66013, the connection may be subject to a connection fee or capacity charge that shall be proportionate to the burden of the proposed accessory dwelling unit, based upon either its square feet or the number of its drainage fixture unit (DFU) values, as defined in the Uniform Plumbing Code adopted and published by the International Association of Plumbing and Mechanical Officials, upon the water or sewer system. This fee or charge shall not exceed the reasonable cost of providing this service.

(g) This section shall supersede a conflicting local ordinance. This section does not limit the authority of local agencies to adopt less restrictive requirements for the creation of an accessory dwelling unit.

(h) (1) A local agency shall submit a copy of the ordinance adopted pursuant to subdivision (a) to the Department of Housing and Community Development within 60 days after adoption. After adoption of an ordinance, the department may submit written findings to the local agency as to whether the ordinance complies with this section.

(2) (A) If the department finds that the local agency’s ordinance does not comply with this section, the department shall notify the local agency and shall provide the local agency with a reasonable time, no longer than 30 days, to respond to the findings before taking any other action authorized by this section.

(B) The local agency shall consider the findings made by the department pursuant to subparagraph (A) and shall do one of the following:

(i) Amend the ordinance to comply with this section.

(ii) Adopt the ordinance without changes. The local agency shall include findings in its resolution adopting the ordinance that explain the reasons the local agency believes that the ordinance complies with this section despite the findings of the department.

(3) (A) If the local agency does not amend its ordinance in response to the department’s findings or does not adopt a resolution with findings explaining the reason the ordinance complies with this section and addressing the department’s findings, the department shall notify the local agency and may notify the Attorney General that the local agency is in violation of state law.

(B) Before notifying the Attorney General that the local agency is in violation of state law, the department may consider whether a local agency adopted an ordinance in compliance with this section between January 1, 2017, and January 1, 2020.

(i) The department may review, adopt, amend, or repeal guidelines to implement uniform standards or criteria that supplement or clarify the terms, references, and standards set forth in this section. The guidelines adopted pursuant to this subdivision are not subject to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2.

(j) As used in this section, the following terms mean:

(1) “Accessory dwelling unit” means an attached or a detached residential dwelling unit that provides complete independent living facilities for one or more persons and is located on a lot with a proposed or existing primary residence. It shall include permanent provisions for living, sleeping, eating, cooking, and sanitation on the same parcel as the single-family or multifamily dwelling is or will be situated. An accessory dwelling unit also includes the following:

(A) An efficiency unit.

(B) A manufactured home, as defined in Section 18007 of the Health and Safety Code.

(2) “Accessory structure” means a structure that is accessory and incidental to a dwelling located on the same lot.

(3) “Efficiency unit” has the same meaning as defined in Section 17958.1 of the Health and Safety Code.

(4) “Living area” means the interior habitable area of a dwelling unit, including basements and attics, but does not include a garage or any accessory structure.

(5) “Local agency” means a city, county, or city and county, whether general law or chartered.

(6) “Nonconforming zoning condition” means a physical improvement on a property that does not conform to current zoning standards.

(7) “Objective standards” means standards that involve no personal or subjective judgment by a public official and are uniformly verifiable by reference to an external and uniform benchmark or criterion available and knowable by both the development applicant or proponent and the public official prior to submittal.

(8) “Passageway” means a pathway that is unobstructed clear to the sky and extends from a street to one entrance of the accessory dwelling unit.

(9) “Permitting agency” means any entity that is involved in the review of a permit for an accessory dwelling unit or junior accessory dwelling unit and for which there is no substitute, including, but not limited to, applicable planning departments, building departments, utilities, and special districts.

(10) “Proposed dwelling” means a dwelling that is the subject of a permit application and that meets the requirements for permitting.

(11) “Public transit” means a location, including, but not limited to, a bus stop or train station, where the public may access buses, trains, subways, and other forms of transportation that charge set fares, run on fixed routes, and are available to the public.

(12) “Tandem parking” means that two or more automobiles are parked on a driveway or in any other location on a lot, lined up behind one another.

(k) A local agency shall not issue a certificate of occupancy for an accessory dwelling unit before the local agency issues a certificate of occupancy for the primary dwelling.

(l) Nothing in this section shall be construed to supersede or in any way alter or lessen the effect or application of the California Coastal Act of 1976 (Division 20 (commencing with Section 30000) of the Public Resources Code), except that the local government shall not be required to hold public hearings for coastal development permit applications for accessory dwelling units.

(m) A local agency may count an accessory dwelling unit for purposes of identifying adequate sites for housing, as specified in subdivision (a) of Section 65583.1, subject to authorization by the department and compliance with this division.

(n) In enforcing building standards pursuant to Article 1 (commencing with Section 17960) of Chapter 5 of Part 1.5 of Division 13 of the Health and Safety Code for an accessory dwelling unit described in paragraph (1) or (2), a local agency, upon request of an owner of an accessory dwelling unit for a delay in enforcement, shall delay enforcement of a building standard, subject to compliance with Section 17980.12 of the Health and Safety Code:

(1) The accessory dwelling unit was built before January 1, 2020.

(2) The accessory dwelling unit was built on or after January 1, 2020, in a local jurisdiction that, at the time the accessory dwelling unit was built, had a noncompliant accessory dwelling unit ordinance, but the ordinance is compliant at the time the request is made.

65852.2.

 (a) (1) A local agency may, by ordinance, provide for the creation of accessory dwelling units in areas zoned to allow single-family or multifamily dwelling residential use. The ordinance shall do all of the following:

(A) Designate areas within the jurisdiction of the local agency where accessory dwelling units may be permitted. The designation of areas may be based on the adequacy of water and sewer services and the impact of accessory dwelling units on traffic flow and public safety. A local agency that does not provide water or sewer services shall consult with the local water or sewer service provider regarding the adequacy of water and sewer services before designating an area where accessory dwelling units may be permitted.

(B) (i) Impose objective standards on accessory dwelling units that include, but are not limited to, parking, height, setback, landscape, architectural review, maximum size of a unit, and standards that prevent adverse impacts on any real property that is listed in the California Register of Historical Resources. These standards shall not include requirements on minimum lot size.

(ii) Notwithstanding clause (i), a local agency may reduce or eliminate parking requirements for any accessory dwelling unit located within its jurisdiction.

(C) Provide that accessory dwelling units do not exceed the allowable density for the lot upon which the accessory dwelling unit is located, and that accessory dwelling units are a residential use that is consistent with the existing general plan and zoning designation for the lot.

(D) Require the accessory dwelling units to comply with all of the following:

(i) Except as provided in Section 65852.26 and paragraph (10) of this subdivision, an accessory dwelling unit may be rented separate from the primary residence, but shall not be sold or otherwise conveyed separate from the primary residence.

(ii) The lot is zoned to allow single-family or multifamily dwelling residential use and includes a proposed or existing dwelling.

(iii) The accessory dwelling unit is either attached to, or located within, the proposed or existing primary dwelling, including attached garages, storage areas or similar uses, or an accessory structure or detached from the proposed or existing primary dwelling and located on the same lot as the proposed or existing primary dwelling, including detached garages.

(iv) If there is an existing primary dwelling, the total floor area of an attached accessory dwelling unit shall not exceed 50 percent of the existing primary dwelling.

(v) The total floor area for a detached accessory dwelling unit shall not exceed 1,200 square feet.

(vi) No passageway shall be required in conjunction with the construction of an accessory dwelling unit.

(vii) No setback shall be required for an existing living area or accessory structure or a structure constructed in the same location and to the same dimensions as an existing structure that is converted to an accessory dwelling unit or to a portion of an accessory dwelling unit, and a setback of no more than four feet from the side and rear lot lines shall be required for an accessory dwelling unit that is not converted from an existing structure or a new structure constructed in the same location and to the same dimensions as an existing structure.

(viii) Local building code requirements that apply to detached dwellings, except that the construction of an accessory dwelling unit shall not constitute a Group R occupancy change under the local building code, as described in Section 310 of the California Building Code (Title 24 of the California Code of Regulations), unless the building official or enforcement agency of the local agency makes a written finding based on substantial evidence in the record that the construction of the accessory dwelling unit could have a specific, adverse impact on public health and safety. Nothing in this clause shall be interpreted to prevent a local agency from changing the occupancy code of a space that was unhabitable space or was only permitted for nonresidential use and was subsequently converted for residential use pursuant to this section.

(ix) Approval by the local health officer where a private sewage disposal system is being used, if required.

(x) (I) Parking requirements for accessory dwelling units shall not exceed one parking space per accessory dwelling unit or per bedroom, whichever is less. These spaces may be provided as tandem parking on a driveway.

(II) Off­street parking shall be permitted in setback areas in locations determined by the local agency or through tandem parking, unless specific findings are made that parking in setback areas or tandem parking is not feasible based upon specific site or regional topographical or fire and life safety conditions.

(III) This clause shall not apply to an accessory dwelling unit that is described in subdivision (d).

(xi) When a garage, carport, or covered parking structure is demolished in conjunction with the construction of an accessory dwelling unit or converted to an accessory dwelling unit, the local agency shall not require that those offstreet parking spaces be replaced.

(xii) Accessory dwelling units shall not be required to provide fire sprinklers if they are not required for the primary residence. The construction of an accessory dwelling unit shall not trigger a requirement for fire sprinklers to be installed in the existing primary dwelling.

(2) The ordinance shall not be considered in the application of any local ordinance, policy, or program to limit residential growth.

(3) (A) A permit application for an accessory dwelling unit or a junior accessory dwelling unit shall be considered and approved ministerially without discretionary review or a hearing, notwithstanding Section 65901 or 65906 or any local ordinance regulating the issuance of variances or special use permits. The permitting agency shall either approve or deny the application to create or serve an accessory dwelling unit or a junior accessory dwelling unit within 60 days from the date the permitting agency receives a completed application if there is an existing single-family or multifamily dwelling on the lot. If the permit application to create or serve an accessory dwelling unit or a junior accessory dwelling unit is submitted with a permit application to create a new single-family or multifamily dwelling on the lot, the permitting agency may delay approving or denying the permit application for the accessory dwelling unit or the junior accessory dwelling unit until the permitting agency approves or denies the permit application to create the new single-family or multifamily dwelling, but the application to create or serve the accessory dwelling unit or junior accessory dwelling unit shall be considered without discretionary review or hearing. If the applicant requests a delay, the 60-day time period shall be tolled for the period of the delay. If the local agency has not approved or denied the completed application within 60 days, the application shall be deemed approved. A local agency may charge a fee to reimburse it for costs incurred to implement this paragraph, including the costs of adopting or amending any ordinance that provides for the creation of an accessory dwelling unit.

(B) If a permitting agency denies an application for an accessory dwelling unit or junior accessory dwelling unit pursuant to subparagraph (A), the permitting agency shall, within the time period described in subparagraph (A), return in writing a full set of comments to the applicant with a list of items that are defective or deficient and a description of how the application can be remedied by the applicant.

(4) The ordinance shall require that a demolition permit for a detached garage that is to be replaced with an accessory dwelling unit be reviewed with the application for the accessory dwelling unit and issued at the same time.

(5) The ordinance shall not require, and the applicant shall not be otherwise required, to provide written notice or post a placard for the demolition of a detached garage that is to be replaced with an accessory dwelling unit, unless the property is located within an architecturally and historically significant historic district.

(6) An existing ordinance governing the creation of an accessory dwelling unit by a local agency or an accessory dwelling ordinance adopted by a local agency shall provide an approval process that includes only ministerial provisions for the approval of accessory dwelling units and shall not include any discretionary processes, provisions, or requirements for those units, except as otherwise provided in this subdivision. If a local agency has an existing accessory dwelling unit ordinance that fails to meet the requirements of this subdivision, that ordinance shall be null and void and that agency shall thereafter apply the standards established in this subdivision for the approval of accessory dwelling units, unless and until the agency adopts an ordinance that complies with this section.

(7) No other local ordinance, policy, or regulation shall be the basis for the delay or denial of a building permit or a use permit under this subdivision.

(8) This subdivision establishes the maximum standards that local agencies shall use to evaluate a proposed accessory dwelling unit on a lot that includes a proposed or existing single-family dwelling. No additional standards, other than those provided in this subdivision, shall be used or imposed, including an owner-occupant requirement, except that a local agency may require that the property may be used for rentals of terms 30 days or longer.

(9) A local agency may amend its zoning ordinance or general plan to incorporate the policies, procedures, or other provisions applicable to the creation of an accessory dwelling unit if these provisions are consistent with the limitations of this subdivision.

(10) In addition to the requirement that a local agency allow the separate sale or conveyance of an accessory dwelling unit pursuant to Section 65852.26, a local agency may also adopt a local ordinance to allow the separate conveyance of the primary dwelling unit and accessory dwelling unit or units as condominiums. Any such ordinance shall include all of the following requirements:

(A) The condominiums shall be created pursuant to the Davis-Stirling Common Interest Development Act (Part 5 (commencing with Section 4000) of Division 4 of the Civil Code).

(B) The condominiums shall be created in conformance with all applicable objective requirements of the Subdivision Map Act (Division 2 (commencing with Section 66410)) and all objective requirements of a local subdivision ordinance.

(C) Before recordation of the condominium plan, a safety inspection of the accessory dwelling unit shall be conducted as evidenced either through a certificate of occupancy from the local agency or a housing quality standards report from a building inspector certified by the United States Department of Housing and Urban Development.

(D) (i) Neither a subdivision map nor a condominium plan shall be recorded with the county recorder in the county where the real property is located without each lienholder’s consent. The following shall apply to the consent of a lienholder:

(I) A lienholder may refuse to give consent.

(II) A lienholder may consent provided that any terms and conditions required by the lienholder are satisfied.

(ii) Prior to recordation of the initial or any subsequent modifications to the condominium plan, written evidence of the lienholder’s consent shall be provided to the county recorder along with a signed statement from each lienholder that states as follows:

“(Name of lienholder) hereby consents to the recording of this condominium plan in their sole and absolute discretion and the borrower has or will satisfy any additional terms and conditions the lienholder may have.”

(iii) The lienholder’s consent shall be included on the condominium plan or a separate form attached to the condominium plan that includes the following information:

(I) The lienholder’s signature.

(II) The name of the record owner or ground lessee.

(III) The legal description of the real property.

(IV) The identities of all parties with an interest in the real property as reflected in the real property records.

(iv) The lienholder’s consent shall be recorded in the office of the county recorder of the county in which the real property is located.

(E) The local agency shall include the following notice to consumers on any accessory dwelling or junior accessory dwelling unit submittal checklist or public information issued describing requirements and permitting for accessory dwelling units, including as standard condition of any accessory dwelling unit building permit or condominium plan approval:

“NOTICE: If you are considering establishing your primary dwelling unit and accessory dwelling unit as a condominium, please ensure that your building permitting agency allows this practice. If you decide to establish your primary dwelling unit and accessory dwelling unit as a condominium, your condominium plan or any future modifications to the condominium plan must be recorded with the County Recorder. Prior to recordation or modification of your subdivision map and condominium plan, any lienholder with a lien on your title must provide a form of written consent either on the condominium plan, or on the lienholder’s consent form attached to the condominium plan, with text that clearly states that the lender approves recordation of the condominium plan and that you have satisfied their terms and conditions, if any.

In order to secure lender consent, you may be required to follow additional lender requirements, which may include, but are not limited to, one or more of the following:

(a) Paying off your current lender.

You may pay off your mortgage and any liens through a refinance or a new loan. Be aware that refinancing or using a new loan may result in changes to your interest rate or tax basis. Also, be aware that any subsequent modification to your subdivision map or condominium plan must also be consented to by your lender, which consent may be denied.

(b) Securing your lender’s approval of a modification to their loan collateral due to the change of your current property legal description into one or more condominium parcels.

(c) Securing your lender’s consent to the details of any construction loan or ground lease.

This may include a copy of the improvement contract entered in good faith with a licensed contractor, evidence that the record owner or ground lessee has the funds to complete the work, and a signed statement made by the record owner or ground lessor that the information in the consent above is true and correct.”

(F) If an accessory dwelling unit is established as a condominium, the local government shall require the homeowner to notify providers of utilities, including water, sewer, gas, and electricity, of the condominium creation and separate conveyance.

(G) (i) The owner of a property or a separate interest within an existing planned development that has an existing association, as defined in Section 4080 of the Civil Code, shall not record a condominium plan to create a common interest development under Section 4100 of the Civil Code without the express written authorization by the existing association.

(ii) For purposes of this subparagraph, written authorization by the existing association means approval by the board at a duly noticed board meeting, as defined in Section 4090 of the Civil Code, and if needed pursuant to the existing association’s governing documents, membership approval of the existing association.

(H) An accessory dwelling unit shall be sold or otherwise conveyed separate from the primary residence only under the conditions outlined in this paragraph or pursuant to Section 65852.26.

(11) An accessory dwelling unit that conforms to this subdivision shall be deemed to be an accessory use or an accessory building and shall not be considered to exceed the allowable density for the lot upon which it is located, and shall be deemed to be a residential use that is consistent with the existing general plan and zoning designations for the lot. The accessory dwelling unit shall not be considered in the application of any local ordinance, policy, or program to limit residential growth.

(b) (1) When a local agency that has not adopted an ordinance governing accessory dwelling units in accordance with subdivision (a) receives an application for a permit to create or serve an accessory dwelling unit pursuant to this subdivision, the local agency shall approve or disapprove the application ministerially without discretionary review pursuant to subdivision (a). The permitting agency shall either approve or deny the application to create or serve an accessory dwelling unit or a junior accessory dwelling unit within 60 days from the date the permitting agency receives a completed application if there is an existing single-family or multifamily dwelling on the lot. If the permit application to create or serve an accessory dwelling unit or a junior accessory dwelling unit is submitted with a permit application to create or serve a new single-family or multifamily dwelling on the lot, the permitting agency may delay approving or denying the permit application for the accessory dwelling unit or the junior accessory dwelling unit until the permitting agency approves or denies the permit application to create or serve the new single-family or multifamily dwelling, but the application to create or serve the accessory dwelling unit or junior accessory dwelling unit shall still be considered ministerially without discretionary review or a hearing. If the applicant requests a delay, the 60-day time period shall be tolled for the period of the delay. If the local agency has not approved or denied the completed application within 60 days, the application shall be deemed approved.

(2) If a permitting agency denies an application for an accessory dwelling unit or junior accessory dwelling unit pursuant to paragraph (1), the permitting agency shall, within the time period described in paragraph (1), return in writing a full set of comments to the applicant with a list of items that are defective or deficient and a description of how the application can be remedied by the applicant.

(c) (1) Subject to paragraph (2), a local agency may establish minimum and maximum unit size requirements for both attached and detached accessory dwelling units.

(2) Notwithstanding paragraph (1), a local agency shall not establish by ordinance any of the following:

(A) A minimum square footage requirement for either an attached or detached accessory dwelling unit that prohibits an efficiency unit.

(B) A maximum square footage requirement for either an attached or detached accessory dwelling unit that is less than either of the following:

(i) 850 square feet.

(ii) 1,000 square feet for an accessory dwelling unit that provides more than one bedroom.

(C) Any requirement for a zoning clearance or separate zoning review or any other minimum or maximum size for an accessory dwelling unit, size based upon a percentage of the proposed or existing primary dwelling, or limits on lot coverage, floor area ratio, open space, front setbacks, and minimum lot size, for either attached or detached dwellings that does not permit at least an 800 square foot accessory dwelling unit with four-foot side and rear yard setbacks to be constructed in compliance with all other local development standards.

(D) Any height limitation that does not allow at least the following, as applicable:

(i) A height of 16 feet for a detached accessory dwelling unit on a lot with an existing or proposed single family or multifamily dwelling unit.

(ii) A height of 18 feet for a detached accessory dwelling unit on a lot with an existing or proposed single family or multifamily dwelling unit that is within one-half of one mile walking distance of a major transit stop or a high-quality transit corridor, as those terms are defined in Section 21155 of the Public Resources Code. A local agency shall also allow an additional two feet in height to accommodate a roof pitch on the accessory dwelling unit that is aligned with the roof pitch of the primary dwelling unit.

(iii) A height of 18 feet for a detached accessory dwelling unit on a lot with an existing or proposed multifamily, multistory dwelling.

(iv) A height of 25 feet or the height limitation in the local zoning ordinance that applies to the primary dwelling, whichever is lower, for an accessory dwelling unit that is attached to a primary dwelling. This clause shall not require a local agency to allow an accessory dwelling unit to exceed two stories.

(d) Notwithstanding any other law, and whether or not the local agency has adopted an ordinance governing accessory dwelling units in accordance with subdivision (a), all of the following shall apply:

(1) The local agency shall not impose any parking standards for an accessory dwelling unit in any of the following instances:

(A) Where the accessory dwelling unit is located within one-half mile walking distance of public transit.

(B) Where the accessory dwelling unit is located within an architecturally and historically significant historic district.

(C) Where the accessory dwelling unit is part of the proposed or existing primary residence or an accessory structure.

(D) When onstreet parking permits are required but not offered to the occupant of the accessory dwelling unit.

(E) When there is a car share vehicle located within one block of the accessory dwelling unit.

(F) When a permit application for an accessory dwelling unit is submitted with a permit application to create a new single-family dwelling or a new multifamily dwelling on the same lot, provided that the accessory dwelling unit or the parcel satisfies any other criteria listed in this paragraph.

(2) The local agency shall not deny an application for a permit to create an accessory dwelling unit due to the correction of nonconforming zoning conditions, building code violations, or unpermitted structures that do not present a threat to public health and safety and are not affected by the construction of the accessory dwelling unit.

(e) (1) Notwithstanding subdivisions (a) to (d), inclusive, a local agency shall ministerially approve an application for a building permit within a residential or mixed-use zone to create any of the following:

(A) One accessory dwelling unit and one junior accessory dwelling unit per lot with a proposed or existing single-family dwelling if all of the following apply:

(i) The accessory dwelling unit or junior accessory dwelling unit is within the proposed space of a single-family dwelling or existing space of a single-family dwelling or accessory structure and may include an expansion of not more than 150 square feet beyond the same physical dimensions as the existing accessory structure. An expansion beyond the physical dimensions of the existing accessory structure shall be limited to accommodating ingress and egress.

(ii) The space has exterior access from the proposed or existing single-family dwelling.

(iii) The side and rear setbacks are sufficient for fire and safety.

(iv) The junior accessory dwelling unit complies with the requirements of Section 65852.22.

(B) One detached, new construction, accessory dwelling unit that does not exceed four-foot side and rear yard setbacks for a lot with a proposed or existing single-family dwelling. The accessory dwelling unit may be combined with a junior accessory dwelling unit described in subparagraph (A). A local agency may impose the following conditions on the accessory dwelling unit:

(i) A total floor area limitation of not more than 800 square feet.

(ii) A height limitation as provided in clause (i), (ii), or (iii) as applicable, of subparagraph (D) of paragraph (2) of subdivision (c).

(C) (i) Multiple accessory dwelling units within the portions of existing multifamily dwelling structures that are not used as livable space, including, but not limited to, storage rooms, boiler rooms, passageways, attics, basements, or garages, if each unit complies with state building standards for dwellings.

(ii) A local agency shall allow at least one accessory dwelling unit within an existing multifamily dwelling and shall allow up to 25 percent of the existing multifamily dwelling units.

(D) (i) Not more than two accessory dwelling units that are located on a lot that has an existing or proposed multifamily dwelling, but are detached from that multifamily dwelling and are subject to a height limitation in clause (i), (ii), or (iii), as applicable, of subparagraph (D) of paragraph (2) of subdivision (c) and rear yard and side setbacks of no more than four feet.

(ii) If the existing multifamily dwelling has a rear or side setback of less than four feet, the local agency shall not require any modification of the existing multifamily dwelling as a condition of approving the application to construct an accessory dwelling unit that satisfies the requirements of this subparagraph.

(2) A local agency shall not require, as a condition for ministerial approval of a permit application for the creation of an accessory dwelling unit or a junior accessory dwelling unit, the correction of nonconforming zoning conditions.

(3) The installation of fire sprinklers shall not be required in an accessory dwelling unit if sprinklers are not required for the primary residence. The construction of an accessory dwelling unit shall not trigger a requirement for fire sprinklers to be installed in the existing multifamily dwelling.

(4) A local agency shall require that a rental of the accessory dwelling unit created pursuant to this subdivision be for a term longer than 30 days.

(5) A local agency may require, as part of the application for a permit to create an accessory dwelling unit connected to an onsite wastewater treatment system, a percolation test completed within the last five years, or, if the percolation test has been recertified, within the last 10 years.

(6) Notwithstanding subdivision (c) and paragraph (1) a local agency that has adopted an ordinance by July 1, 2018, providing for the approval of accessory dwelling units in multifamily dwelling structures shall ministerially consider a permit application to construct an accessory dwelling unit that is described in paragraph (1), and may impose objective standards including, but not limited to, design, development, and historic standards on said accessory dwelling units. These standards shall not include requirements on minimum lot size.

(f) (1) Fees charged for the construction of accessory dwelling units shall be determined in accordance with Chapter 5 (commencing with Section 66000) and Chapter 7 (commencing with Section 66012).

(2) An accessory dwelling unit shall not be considered by a local agency, special district, or water corporation to be a new residential use for purposes of calculating connection fees or capacity charges for utilities, including water and sewer service, unless the accessory dwelling unit was constructed with a new single-family dwelling.

(3) (A) A local agency, special district, or water corporation shall not impose any impact fee upon the development of an accessory dwelling unit less than 750 square feet. Any impact fees charged for an accessory dwelling unit of 750 square feet or more shall be charged proportionately in relation to the square footage of the primary dwelling unit.

(B) For purposes of this paragraph, “impact fee” has the same meaning as the term “fee” is defined in subdivision (b) of Section 66000, except that it also includes fees specified in Section 66477. “Impact fee” does not include any connection fee or capacity charge charged by a local agency, special district, or water corporation.

(4) For an accessory dwelling unit described in subparagraph (A) of paragraph (1) of subdivision (e), a local agency, special district, or water corporation shall not require the applicant to install a new or separate utility connection directly between the accessory dwelling unit and the utility or impose a related connection fee or capacity charge, unless the accessory dwelling unit was constructed with a new single-family dwelling, or upon separate conveyance of the accessory dwelling unit pursuant to paragraph (10) of subdivision (a).

(5) For an accessory dwelling unit that is not described in subparagraph (A) of paragraph (1) of subdivision (e), a local agency, special district, or water corporation may require a new or separate utility connection directly between the accessory dwelling unit and the utility. Consistent with Section 66013, the connection may be subject to a connection fee or capacity charge that shall be proportionate to the burden of the proposed accessory dwelling unit, based upon either its square feet or the number of its drainage fixture unit (DFU) values, as defined in the Uniform Plumbing Code adopted and published by the International Association of Plumbing and Mechanical Officials, upon the water or sewer system. This fee or charge shall not exceed the reasonable cost of providing this service.

(g) This section shall supersede a conflicting local ordinance. This section does not limit the authority of local agencies to adopt less restrictive requirements for the creation of an accessory dwelling unit.

(h) (1) A local agency shall submit a copy of the ordinance adopted pursuant to subdivision (a) to the Department of Housing and Community Development within 60 days after adoption. After adoption of an ordinance, the department may submit written findings to the local agency as to whether the ordinance complies with this section.

(2) (A) If the department finds that the local agency’s ordinance does not comply with this section, the department shall notify the local agency and shall provide the local agency with a reasonable time, no longer than 30 days, to respond to the findings before taking any other action authorized by this section.

(B) The local agency shall consider the findings made by the department pursuant to subparagraph (A) and shall do one of the following:

(i) Amend the ordinance to comply with this section.

(ii) Adopt the ordinance without changes. The local agency shall include findings in its resolution adopting the ordinance that explain the reasons the local agency believes that the ordinance complies with this section despite the findings of the department.

(3) (A) If the local agency does not amend its ordinance in response to the department’s findings or does not adopt a resolution with findings explaining the reason the ordinance complies with this section and addressing the department’s findings, the department shall notify the local agency and may notify the Attorney General that the local agency is in violation of state law.

(B) Before notifying the Attorney General that the local agency is in violation of state law, the department may consider whether a local agency adopted an ordinance in compliance with this section between January 1, 2017, and January 1, 2020.

(i) The department may review, adopt, amend, or repeal guidelines to implement uniform standards or criteria that supplement or clarify the terms, references, and standards set forth in this section. The guidelines adopted pursuant to this subdivision are not subject to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2.

(j) As used in this section, the following terms mean:

(1) “Accessory dwelling unit” means an attached or a detached residential dwelling unit that provides complete independent living facilities for one or more persons and is located on a lot with a proposed or existing primary residence. It shall include permanent provisions for living, sleeping, eating, cooking, and sanitation on the same parcel as the single-family or multifamily dwelling is or will be situated. An accessory dwelling unit also includes the following:

(A) An efficiency unit.

(B) A manufactured home, as defined in Section 18007 of the Health and Safety Code.

(2) “Accessory structure” means a structure that is accessory and incidental to a dwelling located on the same lot.

(3) “Efficiency unit” has the same meaning as defined in Section 17958.1 of the Health and Safety Code.

(4) “Living area” means the interior habitable area of a dwelling unit, including basements and attics, but does not include a garage or any accessory structure.

(5) “Local agency” means a city, county, or city and county, whether general law or chartered.

(6) “Nonconforming zoning condition” means a physical improvement on a property that does not conform to current zoning standards.

(7) “Objective standards” means standards that involve no personal or subjective judgment by a public official and are uniformly verifiable by reference to an external and uniform benchmark or criterion available and knowable by both the development applicant or proponent and the public official prior to submittal.

(8) “Passageway” means a pathway that is unobstructed clear to the sky and extends from a street to one entrance of the accessory dwelling unit.

(9) “Permitting agency” means any entity that is involved in the review of a permit for an accessory dwelling unit or junior accessory dwelling unit and for which there is no substitute, including, but not limited to, applicable planning departments, building departments, utilities, and special districts.

(10) “Proposed dwelling” means a dwelling that is the subject of a permit application and that meets the requirements for permitting.

(11) “Public transit” means a location, including, but not limited to, a bus stop or train station, where the public may access buses, trains, subways, and other forms of transportation that charge set fares, run on fixed routes, and are available to the public.

(12) “Tandem parking” means that two or more automobiles are parked on a driveway or in any other location on a lot, lined up behind one another.

(k) A local agency shall not issue a certificate of occupancy for an accessory dwelling unit before the local agency issues a certificate of occupancy for the primary dwelling.

(l) Nothing in this section shall be construed to supersede or in any way alter or lessen the effect or application of the California Coastal Act of 1976 (Division 20 (commencing with Section 30000) of the Public Resources Code), except that the local government shall not be required to hold public hearings for coastal development permit applications for accessory dwelling units.

(m) A local agency may count an accessory dwelling unit for purposes of identifying adequate sites for housing, as specified in subdivision (a) of Section 65583.1, subject to authorization by the department and compliance with this division.

(n) In enforcing building standards pursuant to Article 1 (commencing with Section 17960) of Chapter 5 of Part 1.5 of Division 13 of the Health and Safety Code for an accessory dwelling unit described in paragraph (1) or (2), a local agency, upon request of an owner of an accessory dwelling unit for a delay in enforcement, shall delay enforcement of a building standard, subject to compliance with Section 17980.12 of the Health and Safety Code:

(1) The accessory dwelling unit was built before January 1, 2020.

(2) The accessory dwelling unit was built on or after January 1, 2020, in a local jurisdiction that, at the time the accessory dwelling unit was built, had a noncompliant accessory dwelling unit ordinance, but the ordinance is compliant at the time the request is made.