What SB 9 Does.
Allows ministerial approval of two-unit housing developments (duplexes) on single-family-zoned parcels and permits urban lot splits creating two parcels of at least 1,200 square feet each. When combined, a property owner can achieve up to four units on what was previously a single-family lot. Owner-occupancy is required for three years on lot-split properties, and the bill excludes properties with tenant evictions within the past 15 years.
What It Means For You.
Beyond ADUs, you can split a single-family lot or build a duplex ministerially. For the right property it means up to four homes where one stood, and it changed what backyard density can look like.
The Official Summary.
Below is the Legislative Counsel's Digest, the official plain-language summary that accompanies every California bill.
The Planning and Zoning Law provides for the creation of accessory dwelling units by local ordinance, or, if a local agency has not adopted an ordinance, by ministerial approval, in accordance with specified standards and conditions.
This bill, among other things, would require a proposed housing development containing no more than 2 residential units within a single-family residential zone to be considered ministerially, without discretionary review or hearing, if the proposed housing development meets certain requirements, including, but not limited to, that the proposed housing development would not require demolition or alteration of housing that is subject to a recorded covenant, ordinance, or law that restricts rents to levels affordable to persons and families of moderate, low, or very low income, that the proposed housing development does not allow for the demolition of more than 25% of the existing exterior structural walls, except as provided, and that the development is not located within a historic district, is not included on the State Historic Resources Inventory, or is not within a site that is legally designated or listed as a city or county landmark or historic property or district.
The bill would set forth what a local agency can and cannot require in approving the construction of 2 residential units, including, but not limited to, authorizing a local agency to impose objective zoning standards, objective subdivision standards, and objective design standards, as defined, unless those standards would have the effect of physically precluding the construction of up to 2 units or physically precluding either of the 2 units from being at least 800 square feet in floor area, prohibiting the imposition of setback requirements under certain circumstances, and setting maximum setback requirements under all other circumstances.
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The Subdivision Map Act vests the authority to regulate and control the design and improvement of subdivisions in the legislative body of a local agency and sets forth procedures governing the local agency’s processing, approval, conditional approval or disapproval, and filing of tentative, final, and parcel maps, and the modification of those maps. Under the Subdivision Map Act, an approved or conditionally approved tentative map expires 24 months after its approval or conditional approval or after any additional period of time as prescribed by local ordinance, not to exceed an additional 12 months, except as provided.
This bill, among other things, would require a local agency to ministerially approve a parcel map for an urban lot split that meets certain requirements, including, but not limited to, that the urban lot split would not require the demolition or alteration of housing that is subject to a recorded covenant, ordinance, or law that restricts rents to levels affordable to persons and families of moderate, low, or very low income, that the parcel is located within a single-family residential zone, and that the parcel is not located within a historic district, is not included on the State Historic Resources Inventory, or is not within a site that is legally designated or listed as a city or county landmark or historic property or district.
The bill would set forth what a local agency can and cannot require in approving an urban lot split, including, but not limited to, authorizing a local agency to impose objective zoning standards, objective subdivision standards, and objective design standards, as defined, unless those standards would have the effect of physically precluding the construction of 2 units, as defined, on either of the resulting parcels or physically precluding either of the 2 units from being at least 800 square feet in floor area, prohibiting the imposition of setback requirements under certain circumstances, and setting maximum setback requirements under all other circumstances. The bill would require an applicant to sign an affidavit stating that they intend to occupy one of the housing units as their principal residence for a minimum of 3 years from the date of the approval of the urban lot split, unless the applicant is a community land trust or a qualified nonprofit corporation, as specified. The bill would prohibit a local agency from imposing any additional owner occupancy standards on applicants. By requiring applicants to sign affidavits, thereby expanding the crime of perjury, the bill would impose a state-mandated local program.
The bill would also extend the limit on the additional period that may be provided by ordinance, as described above, from 12 months to 24 months and would make other conforming or nonsubstantive changes.
The California Environmental Quality Act (CEQA) requires a lead agency, as defined, to prepare, or cause to be prepared, and certify the completion of, an environmental impact report on a project that it proposes to carry out or approve that may have a significant effect on the environment. CEQA does not apply to the approval of ministerial projects.
This bill, by establishing the ministerial review processes described above, would thereby exempt the approval of projects subject to those processes from CEQA.
The California Coastal Act of 1976 provides for the planning and regulation of development, under a coastal development permit process, within the coastal zone, as defined, that shall be based on various coastal resources planning and management policies set forth in the act.
This bill would exempt a local agency from being required to hold public hearings for coastal development permit applications for housing developments and urban lot splits pursuant to the above provisions.
By increasing the duties of local agencies with respect to land use regulations, the bill would impose a state-mandated local program.
The bill would include findings that changes proposed by this bill address a matter of statewide concern rather than a municipal affair and, therefore, apply to all cities, including charter cities.
The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement.
This bill would provide that no reimbursement is required by this act for specified reasons.