What Is California’s SB 6? The Middle Class Housing Act

SB 6, the Middle Class Housing Act of 2022, is a California law that allows housing to be built on land zoned for office, retail, or parking without going through a rezoning. It took effect on July 1, 2023, applies to every California city (charter cities included), and treats housing as a permitted use on qualifying commercial parcels as long as the developer meets the site, density, labor, and tenant-protection conditions written into Government Code Section 65852.24.¹

How the Law Actually Works

SB 6 does not rewrite the zoning map. The underlying commercial zoning stays in place. What changes is that a qualifying housing project becomes an allowable use on the parcel automatically, without a use permit variance, rezoning, or special entitlement. The project is then built using the standards of the closest residential zone that permits the required density. If the existing commercial zoning already allows residential use at a higher density, that existing zoning controls instead.²

The law leaves other rules untouched. The California Coastal Act, CEQA, the Housing Accountability Act, fair housing law, and any local affordability or tenant protection ordinance all continue to apply. One requirement developers sometimes miss: any rental unit built under SB 6 must be leased for terms longer than 30 days, which rules out short-term vacation rentals.³

Which Sites Qualify

Not every commercial parcel is eligible. Fail any single criterion and the project is out.

Size and Location

The site cannot exceed 20 acres. A 2024 amendment (AB 2243) added one exception: regional malls up to 100 acres qualify if the site contains at least 250,000 square feet of permitted retail, at least two-thirds of the permitted uses are retail, and at least two retail tenants each occupy 10,000 square feet or more.⁴

The parcel must be a legal parcel inside a Census-designated urban area. For unincorporated land, the entire parcel has to fall within that urban boundary. The site also cannot adjoin any parcel where more than one-third of the square footage is used for industrial purposes.¹

Environmental and Safety Exclusions

SB 6 shuts out sites with significant environmental or safety risks. Ineligible locations include:

Coastal zones under the California Coastal Act
Prime farmland or farmland of statewide importance, per Department of Conservation maps
Wetlands under the U.S. Fish and Wildlife Service definition
Very high fire hazard severity zones designated by Cal Fire, unless the local agency has excluded the site or the project meets applicable fire mitigation standards
Listed hazardous waste sites, unless cleared for residential use by the relevant state agency
Earthquake fault zones mapped by the State Geologist, unless the project complies with seismic building code standards
FEMA-mapped 100-year flood zones

The coastal zone exclusion is worth flagging because SB 6’s companion law, AB 2011, does not carry it. Coastal commercial parcels cannot use SB 6.³

Density and Local Standards

SB 6 projects must hit a minimum density: the level the state considers appropriate to accommodate lower-income housing in that jurisdiction, as defined in Government Code Section 65583.2. For most urban jurisdictions this works out to roughly 30 dwelling units per acre, though the exact figure varies by location.¹

Above that density floor, the project has to comply with the local zoning, parking, design, and code rules that would apply to a residential development at the same density. Local inclusionary housing ordinances, impact fees, and design review still apply. SB 6 removes the threshold objection that housing is not a permitted use. It does not exempt anyone from building standards.²

Mixed-use projects also qualify, but at least 50 percent of the new construction square footage has to be residential, and the nonresidential portion is limited to retail or office.¹

Labor Requirements

This is where SB 6 adds costs that get underestimated. Two commitments are required before a project moves forward.

Prevailing Wage

All construction workers on an SB 6 project have to be paid at least the general prevailing wage for their trade and geographic area, as set by the Department of Industrial Relations. Apprentices in approved programs may be paid at the applicable apprentice rate. Projects with 10 or fewer units are exempt from this requirement.⁵

Skilled and Trained Workforce

Developers must also certify that a skilled and trained workforce will handle construction. Penalties for noncompliance are cumulative: $10,000 per month for every month a required compliance report is not submitted, and $200 per day for each worker employed who does not meet the skilled and trained standard. Penalties go to the State Public Works Enforcement Fund.⁴

There is a limited exception. If a developer notifies local trade unions and contractor organizations at least seven days before soliciting bids, seeks bids with enforceable skilled-workforce commitments, and still cannot assemble a fully qualified workforce that way, the developer can award contracts without the skilled and trained requirement for those trades. Document the notice and bidding steps carefully; the exception gets scrutinized.⁵

Projects covered by a project labor agreement that already requires prevailing wages and skilled workforce standards are exempt from SB 6’s separate reporting requirements.

CEQA Still Applies

SB 6 does not exempt projects from the California Environmental Quality Act. Full CEQA review is still required. This is one of the most important distinctions between SB 6 and AB 2011, which created a CEQA-exempt ministerial path.⁶

In practice, an SB 6 project may need an environmental impact report or a mitigated negative declaration before approval, depending on its potential effects. That process can add months or years and meaningful cost. Budget for CEQA early, and check whether any existing streamlining provisions or infill housing exemptions apply. The state’s Office of Land Use and Climate Innovation maintains resources for CEQA housing exemptions.⁷

Approvals and What Local Governments Can Still Do

SB 6 does not build a new approval track. It makes commercial parcels eligible for existing housing approval mechanisms. Qualifying SB 6 projects can invoke SB 35’s streamlined ministerial approval and the protections of the Housing Accountability Act.⁸

The Housing Accountability Act limits a local government’s ability to deny or reduce the density of a housing project that meets objective standards. SB 35 streamlining, available where a jurisdiction has missed its housing production targets, lets qualifying projects bypass discretionary review and get ministerial approval. Combined with SB 6, a local government facing a compliant application on a commercial parcel has narrow grounds for refusal.

The Local Exemption Path

Cities and counties keep one meaningful tool. A local agency can exempt a specific parcel from SB 6 by making written findings, supported by substantial evidence, that meet one of two tests: either the agency simultaneously reallocates the lost residential capacity to other parcels so there is no net reduction in housing density across the jurisdiction, or the agency shows that the lost capacity can be absorbed by other sites already allowing residential development at the required density. Replacement sites have to be suitable for housing and open to by-right development.⁵

The no-net-loss requirement makes this hard to use as blanket resistance. Every exempted parcel forces the agency to identify equivalent replacement capacity somewhere else.

Commercial Tenant Relocation Payments

Converting an occupied commercial site triggers relocation assistance for existing tenants who have operated on the property for at least one year. Payments scale with tenancy length:

1 to 4 years: six months’ rent
5 to 9 years: nine months’ rent
10 to 14 years: twelve months’ rent
15 to 19 years: fifteen months’ rent
20 years or more: eighteen months’ rent

The figures are based on the tenant’s current rent. A long-established tenant on a large site can trigger a six-figure payment, and feasibility analysis should account for it upfront.⁴

SB 6 Versus AB 2011

SB 6 and AB 2011 (the Affordable Housing and High Road Jobs Act) both took effect on July 1, 2023, and both allow housing on commercially zoned land. Any developer looking at a commercial parcel should compare them.

Environmental review is the biggest split. AB 2011 provides a CEQA-exempt ministerial approval process, which can shorten timelines dramatically and cut litigation exposure. SB 6 keeps full CEQA in place. On a complex or contested project, that one difference can decide which law to use.⁹

Affordability is the second split. AB 2011 requires projects to meet specific affordability criteria, with different standards for 100-percent-affordable projects and for mixed-income developments on commercial corridors. SB 6 imposes no independent affordability mandate, though local inclusionary ordinances still apply.⁶

Both require prevailing wages, but SB 6 also mandates a skilled and trained workforce. AB 2011 does not. Both require commercial tenant relocation assistance. Both share the same list of prohibited locations, with one difference: SB 6 adds the coastal zone.⁹

What AB 2243 Changed

AB 2243, signed in 2024, expanded SB 6 in several ways. The most consequential change is the regional mall exception to the 20-acre cap, opening qualifying mall sites up to 100 acres to SB 6 development. Given the number of underperforming enclosed malls in California, this adds a significant new category of eligible land.⁴

1
California Legislative Information. California Government Code 65852.24 (2025)
2
California Legislative Information. California Government Code 65852.24
3
California Legislative Information. SB 6 – Local Planning: Housing: Commercial Zones
4
California Legislative Information. AB 2243 – Housing Development: Commercial Zones
5
Legiscan. Bill Text: CA SB6 2021-2022 Regular Session Chaptered
6
City of Gilroy. AB 2011 and SB 6
7
Office of Land Use and Climate Innovation. Site Check and Other CEQA Housing Resources
8
Association of Bay Area Governments (ABAG). AB 2011 and SB 6 Summary of Key Details
9
County of San Diego, Planning and Development Services. SB 6 and AB 2011: Residential Development in Commercial Zones Informational Fact Sheet