California's Big Transit Housing Law Skipped Lafayette. So Why Is Downtown Being Rezoned Anyway?

Which rule is actually changing what can be built in downtown Lafayette? Most people would name SB 79, the 2025 state law that allows taller, denser housing near transit stations. In August 2025, Lafayette published a map of the quarter-mile and half-mile rings around its BART station, drawn next to evacuation routes and fire hazard zones. A lot of people still remember that map.

The map described a draft of the bill. The final law does not reach Lafayette BART at all. The density increase now moving through City Hall comes from a different source. In June 2026, the city settled a lawsuit over its Housing Element, and that settlement has its own map, its own height numbers and a deadline of Dec. 31, 2026. If you're comparing Lamorinda towns or looking at a downtown parcel, that local document matters more than the state law.

Fifteen Stations Is the Line

SB 79 was approved and filed on Oct. 10, 2025. Its project rules began applying to local agencies on July 1, 2026. Its two remaining tiers apply only to stations inside an "urban transit county," which the chaptered bill text defines as a county with more than 15 passenger rail stations. In a qualifying county, the Tier 1 rules for heavy rail stations bar cities from setting height limits below 75 feet or density caps below 120 units per acre within a quarter mile of the station.

Contra Costa doesn't qualify. At the Sept. 8, 2025 City Council meeting, Casey Elliott of Townsend Public Affairs went through the count. The county has 11 BART stations, the Richmond Transit Center, which serves both BART and Amtrak, and a station in Martinez. Two more stations are planned: an Amtrak station in Oakley and the longer-term Hercules Hub. Once both are running, the county would reach 15. According to the council minutes, Elliott said the law would take effect "on the 16th station," and a station counts only once it is operating.

At that meeting, Councilmember Jim Cervantes said Lafayette was "out of this bill as is the rest of Contra Costa." He credited Senator Tim Grayson and Assemblymember Rebecca Bauer-Kahan, and he recommended that the city drop its opposition. The council voted to withdraw it, according to the city's Sept. 10 announcement. Councilmember Jim McCormick and then-Mayor Susan Candell both asked what would happen if regional planners added stations later. That makes the station count a tripwire worth watching, but it hasn't been crossed.

Walnut Creek is in the same position. Contra Costa News reported in October 2025 that Walnut Creek was one of the county's cities that had opposed the bill. Lafayette's 2026 legislative agenda, adopted March 9, still supports exempting fire hazard areas from higher-density mandates.

The Rezoning Came Through Superior Court

While the state fight was going on, a separate lawsuit was underway. The City Council adopted its revised Housing Element on Dec. 16, 2024, and the state Department of Housing and Community Development certified it. On March 10, 2025, the Housing Action Coalition filed a petition in Contra Costa Superior Court, Case No. C25-0512. The petition alleged that the city's inventory of housing sites was too small to meet its Regional Housing Needs Allocation and that the city had overestimated how much housing those sites could hold.

On June 8, 2026, the council authorized the city manager to sign a settlement. In the city's announcement, Mayor Carl Anduri said the city disputed the claims but settled to avoid costly litigation. Ali Sapirman of the Housing Action Coalition described the settlement as planning for more homes near transit in a high-resource community.

The settlement doesn't change zoning by itself. It is conditional. If the city adopts a specific set of changes by Dec. 31, 2026, the coalition dismisses its petition with prejudice once its attorney's fees are paid. Those fees are $120,080, plus 10 percent annual interest starting March 24, 2026. One headline put the figure at $128K, but the Patch article itself and the city both give $120,080. The city agreed only to consider the changes through its normal public process, and it kept full discretion over the outcome.

Here is what the Oct. 19 Planning Commission staff report proposes, area by area.

The settlement describes the western edge of the north-side area using El Nino Ranch Road. The staff report's map description says "near Risa Rd." Anyone with a parcel close to that line should check the city's high-resolution maps instead of relying on either description.

The local numbers are well below what SB 79 would set if Contra Costa ever qualified. The tallest proposed downtown limit is 65 feet. The state law's quarter-mile floor for a qualifying heavy rail station is 75 feet. The city's 2026 package fills in more of its existing downtown plan. It doesn't import the state's version.

The Minimum Density

For owner-developers, the most consequential line in the package may be the new minimum density. On sites the Housing Element counts as opportunity sites, the rules would set a minimum density of 88 percent of the old maximum. On a 60-unit-per-acre opportunity site, that floor is about 52.8 units per acre. A smaller residential project on one of those sites wouldn't meet the minimum, so how a site is classified now affects what it's worth. Parcels in the same zones that are not opportunity sites would get no minimum.

The settlement also changes how the city counts sites. Five properties owned by faith-based organizations would no longer be used in the city's "no net loss" calculations. In exchange, the coalition agreed not to object if the city adds other parcels to its buffer. The settlement names those parcels: 100 Lafayette Circle, two office buildings at 3736 Mt. Diablo Blvd, 3746 Mt. Diablo Blvd, and the project site at Mt. Diablo and 2nd Street together with 1005 2nd Street. If you're evaluating any of those addresses, that list is a public record of how the city views them.

The package also merges the Retail Business and Special Retail Business zoning districts into a single Downtown Retail district. It moves density and height standards out of the Downtown Specific Plan and into the General Plan and zoning code, which leaves one set of rules instead of overlapping ones. Contra Costa News summarized the goal as giving "better clarity to developers and the public regarding allowed density," in service of the city's plan for 2,114 new downtown homes.

What Is Already Being Built Runs on Earlier Approvals

Downtown construction that's visible today began before this package and doesn't depend on it. Diamond Construction broke ground in late June 2026 on 1001 Oak Hill Road, a seven-story mixed-use building with 85 homes, 11 of them below market rate. Completion is targeted for summer 2028. The city has described Oak Hill projects near BART as Housing Element projects, not SB 79 applications.

At 3458 Mt. Diablo Blvd, on the corner of Second Street, the City Council approved a 31-home mixed-use project by OUTDO Lafayette LLC in March 2026, with conditions. According to Lamorinda Weekly, Mayor Anduri said he welcomed housing at the site but would not have wanted six stories so close to the sidewalk. A separate Planning Commission item on Oct. 5 considered the developer's request to go to 71 feet and seven stories with 30 units. The city treated that as a change to an existing approval, not as part of the settlement rezoning.

The Calendar Through Dec. 31

1. Oct. 19, 2026. The Planning Commission held its hearing at the Don Tatzin Community Hall in the Lafayette Library and Learning Center. It also considered an addendum to the Housing Element environmental impact report, which concluded that the changes would not cause new or more severe impacts.
2. November 2026. The city's project page says it expects the City Council to take up the package this month. No date has been posted.
3. Dec. 31, 2026. This is the settlement deadline. If the city adopts the changes by then, the petition is dismissed once the fees are paid.

Until the council votes, the table above shows a proposal, not current zoning.

A Few Direct Questions

Does SB 79 apply around Lafayette BART today? No. Contra Costa County has fewer than the more than 15 operating passenger rail stations the law requires, so the station-area tiers don't apply anywhere in the county.

Is the downtown rezoning final? Not yet. The Planning Commission makes a recommendation, and the City Council's vote is expected in November. The settlement commits the city only to consider the changes.

Where are the official maps and documents? The Oct. 19 agenda links to the staff report, the draft ordinance, the settlement agreement and high-resolution General Plan and zoning maps. Questions can go to Stefanie Cervantes, Assistant Planning Director.

This post is general information about public zoning proposals, not legal, tax or financial advice. Confirm how any of it applies to your property with a land-use attorney or the City of Lafayette's planning staff.

If you own a parcel along Mt. Diablo Blvd or south of Highway 24 and want to know what a 45- or 65-unit-per-acre map would mean for your site, Woehrle Real Estate and Development can review the city's maps with you, check your parcel against the opportunity site list, and estimate what it's worth today and if the package is adopted.