Starting July 1: state law makes dense housing near transit stops by-right in eight California counties

As of July 1, 2026 — yesterday — Senate Bill 79 (Wiener) is now California law. Signed by Governor Newsom on October 10, 2025 and effective July 1, qualifying high-density housing near major transit stops is now a by-right use in eight California counties — regardless of what local zoning says. Every property owner near a Bay Area BART or Caltrain station should understand what changed yesterday.

Eight counties, two tiers, two distances

SB 79 applies to "urban transit counties" — defined as counties with at least 15 passenger rail stations. Eight currently qualify: Alameda, San Francisco, San Mateo, Santa Clara, and Sacramento in Northern California, plus Los Angeles, Orange, and San Diego in the south. (Contra Costa has BART stations but does not reach the 15-station threshold under this definition.)

The law divides qualifying transit stops into two tiers. A Tier 1 stop serves heavy rail or very high-frequency commuter rail — BART, major Caltrain stations, LA Metro Rail. Projects within one-quarter mile of a Tier 1 stop get the law's most permissive development standards. A Tier 2 stop serves light rail, high-frequency commuter rail, or qualifying Bus Rapid Transit, with a one-half mile qualifying zone.

What 'by-right' actually means on these sites

A qualifying project — at least five units at a minimum density of 30 dwelling units per acre — is entitled to ministerial approval. The planning commission cannot reject it on discretionary grounds. California HCD's implementation guidance confirms the law permits housing up to 95 feet in height and up to 160 units per acre near qualifying Tier 1 stops, with density bonuses available on top. The critical phrase throughout the statute is "regardless of" — regardless of the local general plan, regardless of zoning.

The affordability floor that comes with it

Projects of more than ten units must include income-restricted units: 7% for extremely low-income households, 10% for very low-income, or 13% for lower-income. The affordability commitment is long-term and runs with the property. It applies whether or not the city has its own inclusionary housing rules.

Cities can redirect it — they can't reduce it

Local governments aren't powerless. SB 79 lets a city adopt its own alternative Transit-Oriented Development plan that adjusts which sites the law covers or how standards apply. The condition: the alternative must allow at least as much total housing capacity as SB 79's defaults. Redirect the density, yes. Lower the ceiling on total units, no. CalMatters reported in April 2026 that cities across the covered counties were scrambling — some adopting alternatives, others in resistance — ahead of the July 1 date. Both are now on the record.

You can redirect it. You cannot reduce it.

What cities did before July 1 — and who's already moving

Not every city went quietly. Los Angeles passed two ordinances on June 3, 2026 that effectively delay SB 79 until around 2030 — upzoning selected parcels just enough to qualify for the law's own phasing threshold. Mayor Karen Bass publicly opposed the law. San Francisco took a different path: Mayor Lurie signed an implementation ordinance in May 2026 that exempts approximately 19,850 parcels in low-income census tracts from SB 79 until 2032, and preemptively upzoned other sites. Beverly Hills filed an alternative TOD plan and is still in HCD review after the agency rejected its first version. San Diego deferred 76% of eligible parcels to 2027–2031 while its own Transit Village Plan is being drafted.

In the Bay Area, where BART stations qualify as the law's highest Tier 1 sites (allowing up to 95 feet and 160 units per acre), developer activity is already moving before the ink is dry. BART issued an RFP in April 2026 for redevelopment of surface parking at Fremont BART Station. Hayward is collaborating with BART on mid-rise housing (up to 11 stories) near Hayward BART. Richmond is soliciting a developer for Phase II of the Richmond Transit Village adjacent to Richmond BART. The MTC has published a regional SB 79 map showing which Bay Area parcels are Tier 1 vs. Tier 2 — a starting reference for any owner or investor evaluating transit-adjacent land.

Since the July 1 effective date, the first implementation decisions are landing. HCD certified San Jose's TOD ordinance as meeting SB 79's statutory requirements — one of the first Bay Area jurisdictions to receive that formal green light. Beverly Hills, whose first alternative plan HCD rejected in May 2026, adopted an amended TODAP via urgency ordinance on June 9, 2026 — ahead of HCD's July 7 written-response deadline. HCD has up to 120 days to review the amended plan and has confirmed that an adopted TODAP in place on July 1, 2026 remains valid until HCD provides further comment. Cities in the eight qualifying counties are on the clock.

My read for clients: if you own land — or are evaluating a site — within a half-mile of a BART, Caltrain, VTA Light Rail, or BRT stop in the Bay Area, the legal ceiling on what can be built there changed yesterday. That affects site value, comparable sales, and what a reasonable offer looks like. And if you live near a transit stop and have been tracking what might rise next door, the post-July-1 answer is: more, and taller — unless your city is one of the ones that negotiated a delay or exemption. I'd rather you know your city's status before a neighbor's permit application lands on your block.

Update July 16, 2026: mobile home parks and RV parks excluded from SB 79

Governor Newsom signed SB 722 (Senator Dr. Aisha Wahab, D-Silicon Valley) on July 16, 2026, as a direct companion to SB 79. The bill's formal title is Transit-Oriented Housing Development: Excluded Parcels and Sites. Its effect is specific: parcels and sites currently governed by the Mobilehome Residency Law, the Recreational Vehicle Park Occupancy Law, the Mobilehome Parks Act, or the Special Occupancy Parks regulations are now explicitly excluded from SB 79's by-right development rules. In plain terms, an SB 79 applicant cannot invoke ministerial by-right entitlement to redevelop an existing mobile home park or RV park as transit-adjacent high-density housing. For Solano County — where mobile home parks in Vallejo and Fairfield represent some of the only deeply affordable housing stock — this exclusion matters: those sites are protected from displacement-enabling rezoning under the new law.