A litigation group sponsored by the California Association of Realtors has sued San Diego, San Francisco and Montebello, Calif., accusing all three of unlawfully narrowing a 2025 state law that opens land near transit stations to housing.
The three suits, announced Aug. 20, are the first significant enforcement test of Senate Bill 79, and they target three very different forms of local resistance.
What SB 79 does
The 2025 law permits housing on residential, mixed-use and commercial sites within a quarter mile or half mile of qualifying metro and commuter rail stations. Cities retain some ability to delay implementation in certain areas or exclude particular sites through valid local ordinances, but the statute demands strict compliance with its terms.
The plaintiffs’ argument in each case is that the city used a permitted mechanism improperly, or used one that was never permitted at all.
Three cities, three theories
In San Diego, the complaint targets a “walking path” exemption. The suit alleges the city excludes sites near trolley stations on the grounds that reaching the station requires walking through an alley or crossing a sidewalk gap — using the city’s own infrastructure shortcomings as a reason to block housing, which the plaintiffs say state law forbids. The filing also alleges city planning staff published inconsistent and erroneous development maps. The case is No. 26CU043967C in San Diego County Superior Court.
In San Francisco, the allegation is that the city improperly designated areas as “industrial employment hubs,” a classification the plaintiffs say does not meet the state’s standards for excludable zones. The suit separately alleges the city unlawfully restricts the State Density Bonus Law. That case is No. CPF-26-520062 in San Francisco County Superior Court.
Montebello faces the most straightforward claim: that it imposed a complete moratorium on transit-oriented development, which the suit says violates the Housing Crisis Act of 2019, a law that prohibits housing moratoriums outright. The case is No. 26STCP02862 in Los Angeles County Superior Court.
None of the three cities has filed a response, and the allegations are untested.
Who is bringing the cases
Californians for Homeownership, which the California Association of Realtors sponsors, and the California Housing Defense Fund are plaintiffs in all three actions. YIMBY Law joined only the San Francisco case.
The suits seek enforcement of SB 79 and invalidation of the municipal ordinances the plaintiffs say conflict with it.
Tamara Suminski, president of the California Association of Realtors, framed the filings as a matter of uniformity. “Cities throughout California must play by the same set of rules established by our Legislature for the development of housing,” she said.
Matthew Gelfand, a litigator with Californians for Homeownership, said the group is “committed to ensuring that cities strictly comply with these provisions in adopting local transit-oriented development policies.”
What it means
The verified facts are the filings, the courts, the case numbers and the allegations. Nothing has been adjudicated.
RealtyWire’s analysis is that the choice of defendants looks deliberate rather than opportunistic. San Diego, San Francisco and Montebello represent three distinct evasion strategies — a technical exemption applied broadly, a zoning designation stretched past its purpose, and a flat prohibition. Winning all three would establish that none of the available methods works. Losing one would tell other cities which method survives.
The involvement of the state’s Realtor association is itself notable. Trade groups representing agents have historically been cautious about suing the cities their members work in. That calculation appears to have changed as housing supply became the association’s central policy concern.
The suits also arrive as California cities weigh how far to go on density. San Jose this week directed staff to draft rules quadrupling allowable density in single-family neighborhoods, with the mayor’s own memo warning that failing to act risked losing local land use authority. These lawsuits are the enforcement side of that same pressure: cities that do not upzone voluntarily face state mandates, and cities that comply only nominally now face litigation.
Elsewhere the fight runs in the opposite direction. Texas Gov. Greg Abbott has threatened to strip funding from cities blocking housing development, using budget leverage rather than courts to reach a similar end.
What to watch
Montebello is the case most likely to resolve quickly, because a blanket moratorium is either permitted or it is not, and the Housing Crisis Act language is explicit. A fast ruling there would give the plaintiffs a precedent to cite in the harder cases.
San Diego’s is the more consequential dispute. The walking-path theory, if upheld, would let any city with imperfect pedestrian infrastructure exclude nearby parcels — a category that covers a great deal of California. How the court reads that exemption will determine how much land SB 79 actually reaches.
