California’s housing shortage has pushed the Legislature to change permit laws that affect property owners and developers. Two new laws taking effect in 2026 – AB 253 and AB 301 – create stricter timelines for government reviews of housing permits. These laws aim to reduce bureaucratic delays that have slowed construction and added costs to housing projects. For property owners and developers, these changes matter because they create consequences if agencies fail to act quickly.
What AB 253 Means for Permit Reviews
Under the new law known as the California Residential Private Permitting Review Act, a local building department must provide an estimated timeline for completing a residential building permit review for projects of 10 units or fewer and less than 40 feet tall. If the department cannot complete its review within 30 days or fails to provide a timeline within 30 days, property owners and developers may hire a licensed third‑party plan‑checker to perform the review.
Once the third‑party review is done, the agency has 10 days to issue the permit or explain what parts of the project do not comply with regulations. This creates a kind of “shot clock” on permit review and discourages long delays that traditionally stalled smaller residential projects.
This change reflects frustration that even after securing land use approvals, many projects sat idle while cities took months to issue post‑entitlement permits. With AB 253, property owners no longer have to wait passively; they can push projects forward by using certified professionals when the government fails to meet the timeline.
How AB 301 Adds a Shot Clock for State Agencies
While AB 253 focuses on local agencies, AB 301 extends similar timing rules to state agencies involved in review and approval of housing permits. State agencies now have specified windows to act on post‑entitlement permit applications. If a state agency does not complete its review within the required timeframe, the application is considered approved.
In practice, this means property owners and developers no longer face unchecked delays from state bodies once an application reaches the post‑entitlement phase. Under AB 301, agencies must determine application completeness and approve or deny permits within set timeframes tied to project size. If they fail to meet these deadlines, the permit moves forward as though approved by default. This legal “backstop” ensures state involvement does not halt progress indefinitely.
Why These Matter for Property Owners
Before these laws, many cities and state agencies took months to review permit applications after land use entitlement. Development teams often faced unpredictable delays that increased carrying costs, stalled construction schedules, and sometimes forced projects to be abandoned. Now permitting delays carry consequences.
By imposing clear time limits and giving applicants new tools to push projects forward, AB 253 and AB 301 encourage government bodies to act more quickly and predictably. Property owners benefit because they can move ahead with residential construction once governmental review timelines expire or are enforced by third‑party action.
Practical Impacts on Land Use and Development
These laws affect typical residential housing projects, including single‑family homes, duplexes, small multi‑unit buildings, and accessory dwelling units. Developers and property owners should adjust planning processes to anticipate:
- Mandatory timelines for government permit reviews
- Rights to use private reviewers if local review exceeds 30 days
- Deemed approvals when agencies fail to act under AB 301
- Faster path from entitlement to construction authorizations
Overall, these shot‑clock timelines reduce uncertainty and help protect projects from being delayed by slow bureaucratic procedures.
What Property Owners Should Do Next
These 2026 laws change how land use and property rights disputes unfold in California. Property owners and developers should:
- Track permitting timelines closely once an application is submitted.
- Prepare for using third‑party reviewers when local departments delay.
- Understand what qualifies as a completed application for state agencies.
- Document communications and timelines in case legal enforcement becomes necessary.
Staying on top of these deadlines can give you an advantage when navigating municipal and state approval processes.
Don’t Let Permit Delays Stall Your Development
Kassouni Law represents property owners and developers facing land use and permitting challenges in California. When agencies miss required timelines or impose unreasonable hurdles, having an attorney who understands both land use strategy and property rights can make a significant difference.
If you are dealing with delayed permit reviews, complex post‑entitlement requirements, or disputes with city or state agencies under these new housing laws, call Kassouni Law today to schedule a consultation. We can help you enforce your rights and move your project forward with confidence.
