California passed a stack of housing laws in 2025 that took effect in 2025 and 2026. Some change what a homeowner can build, some speed up city approvals, and some only affect large projects. This handbook page sorts them by who they matter to, with a San Clemente lens.
Market Handbook
California’s New Housing Laws and San Clemente
A plain-English map of the 2025 and 2026 California housing laws that could touch a San Clemente property, what each does, and how Rudy can help you find out what applies.
The laws at a glance
| Topic | What changed | Who it can matter to |
|---|---|---|
| ADUs (2026) | 15-day completeness deadline (SB 543); junior-ADU owner-occupancy only when a bathroom is shared (AB 1154); local ordinances must be filed with the state on time (SB 9 of 2025) | Owners adding a backyard or garage unit |
| Duplexes and lot splits | 2021’s SB 9 allows ministerial duplexes and lot splits with limits; AB 1061 (2026) reaches historic districts | Owners of single-family lots |
| CEQA | New infill exemption (AB 130) and near-miss streamlining (SB 131) | Builders and larger housing projects |
| Transit (SB 79) | Higher density near major transit stops in the largest transit counties, including Orange County, from July 1, 2026 | Owners near qualifying stops, and developers |
| Permit clocks | Private plan checkers if reviews run long (AB 253); final inspections within 10 business days (AB 1308) | Anyone with a permit in review |
These summaries follow Holland & Knight’s review of the 2026 housing laws and the state’s ADU Handbook. Laws are amended often, so confirm the current text before you rely on it.
What it means locally
The state sets the floor and each city implements it. In San Clemente, the city’s Planning Services handles applications, and the coastal zone adds its own review: the city says a new Local Coastal Program would give it more control over coastal-zone approvals and streamline coastal permits. That is why the same state law can play out differently for a hillside lot and a beach lot a mile apart.
The market handbook explains how to read the data behind a purchase decision; zoning is the other half of what a property can become.
A five-step way to check a property
- Find the zoning. Ask the city, or check its public map.
- Check overlays. Coastal zone, historic review, hillside, airport or fire zones.
- Read the state laws that apply. ADU, SB 9, SB 79 and others.
- Ask the planner one clear question. In writing, with the address.
- Write down the answer, including who gave it and when.
How Rudy can help
Rudy is a licensed real estate agent, and before that he spent 12 years in real estate development for the national telecommunications carriers, taking cell sites through entitlements, permitting and right-of-way with city and county jurisdictions, more than a hundred of them. He knows what a planning counter needs to see, which questions to ask first, and how long each step tends to take. Read his background.
For a homeowner or buyer in San Clemente, that experience is useful in a specific, limited way: helping you start the conversation with the jurisdiction. That can mean:
- working out which rules, zones and overlays apply to an address before you make an offer or an application;
- putting your idea on one page so a planner can react to it quickly;
- preparing you for a pre-application call or counter visit, including what to bring and what to ask;
- connecting you with an architect, engineer, land-use attorney or contractor when the project needs one;
- building realistic timelines into your purchase, sale or loan.
Common questions
Do the new laws override city zoning?
Some override specific city rules, such as ADU limits and transit density, but each has conditions. Cities implement them in different ways.
Is SB 79 in effect?
It took effect in cities on July 1, 2026, according to law-firm summaries. Ask the city whether an address is affected.
Where do I read the laws?
The state’s housing department publishes ADU guidance, and law firms publish plain summaries.
A note on what this is
This page is general information from a real estate professional. It is not legal, engineering, architectural or tax advice, and it does not guarantee that any permit will be issued. Zoning and permit rules differ from one parcel to the next and are updated regularly: check with the city or county and with licensed professionals before you act.
Keep exploring
- The market handbook — What each number measures and how to read it.
- Prop 13 by the numbers — Assessed versus market value.
- Weekly market reports — The gauge and the numbers.
- About Rudy — Twelve years in telecom real estate, then homes.
Talk to a lender. Rates, loan programs and approvals come from lenders, not from websites or real estate agents. Talk to your own mortgage broker, or use our preferred lender, Rodrigo Ballon with CrossCountry Mortgage, at 858-735-0255. You are always free to choose any lender you like, and you can verify any lender’s license at nmlsconsumeraccess.org.
Sources
- Holland & Knight: California’s 2026 housing laws
- Holland & Knight: SB 79, higher density near transit
- California HCD: accessory dwelling units and the ADU Handbook
- City of San Clemente: Planning Services
- City of San Clemente: Coastal Planning
General information for orientation, not legal, tax, financial or appraisal advice. Details change; confirm anything that matters with the official source, your lender and your agent.