California’s permit timeline is shorter this year than it was last year. Not on paper. In practice.
Three pieces of legislation are working through implementation at the same time. AB 130 and SB 131 took effect January 1, expanding CEQA categorical exemptions for infill housing and a list of public-purpose projects. SB 79, the transit-overlay zoning preemption, takes effect July 1. Sitting on top of all that is the 2025 California Building Standards Code, also effective January 1. Read together, this is the most consequential California permit reform since SB 35 in 2017.
What AB 130 and SB 131 Actually Change
CEQA has been the structural constraint on California infill housing for a generation. AB 130 and SB 131, paired together, don’t repeal it. They cut into the categorical-exemption framework hard enough that a much larger share of projects can avoid full review.
The exemptions now cover qualifying infill housing projects on sites zoned for the proposed use, with a clean tier of objective standards. Health care facilities, childcare centers, broadband infrastructure, and certain clean-water projects also pick up new exemption pathways. The practical effect is that projects that previously sat in an EIR queue for 14 to 22 months can file for exemption and move into building-permit review on a shorter clock.
The downside risk for builders is that the exemption is challengeable. A petitioner can still file under Public Resources Code 21167, and a successful challenge unwinds the exemption. The early caseload from January and February 2026 will tell builders how aggressively the new exemptions hold up under litigation. Three of the first published filings are sitting in Bay Area superior courts now.
SB 79’s Transit Overlay Is Bigger
SB 79, the Abundant and Affordable Homes Near Transit Act, takes effect July 1. It overrides local height, density, and lot-coverage limits within walking distance of major transit stops in eight counties: Alameda, Contra Costa, Los Angeles, Marin, San Francisco, San Mateo, Santa Clara, and Solano. The radius and density tier vary by transit type, with higher densities allowed near rail and BRT.
For builders, SB 79 is a different kind of unlock. AB 130 changes the permit clock. SB 79 changes what’s allowed to be built. A site that previously zoned for 35 feet and 12 units may, after July 1, allow 75 feet and 60 units if it’s inside a qualifying transit catchment. Underwriting on those sites is being redone right now.
There’s a real question about how cities are going to administer it. Several jurisdictions in the eight covered counties have signaled they’ll process applications strictly to the statute. Others have published guidance that interprets the statute narrowly. The HCD’s role in policing local compliance is going to be a 2026-into-2027 story.
The Federal Track Adds Pressure From the Other Side
A March 2026 White House executive order directs HUD to draft best practices on permit shot clocks, permit fees, and private-provider building permit reviews. The order doesn’t preempt state law, but it puts federal grant conditioning on the table. State and local jurisdictions that don’t move on permit timelines may see federal housing funding tightened in 2027.
The EPA is on a parallel track. A proposed rule to redefine “begin actual construction” under the Clean Air Act’s New Source Review program is expected in 2026, which would matter for emissions-generating projects sitting in PSD pre-construction review.
What Builders Are Doing About It
Counsel for several major multifamily developers say they’ve already filed for streamlined entitlement under AB 130 on infill projects that had been sitting in pre-application status waiting for the bill to land. Architects are sketching feasibility on SB 79 sites that didn’t pencil under prior zoning. The practical guidance to construction managers right now is to start running a parallel permit-pathway analysis on every active California pursuit, because the cheaper pathway may have changed since the project pro-forma was last updated.