New California ADU Laws in 2026 (SB & AB Roundup)

A decade of state housing bills made ADUs legal almost everywhere in Los Angeles. Here's the plain-English roundup of the laws that matter in 2026 — and the parts the headlines get wrong.

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If you've looked into building an accessory dwelling unit in Los Angeles, you've probably run into a wall of bill numbers — SB 13, AB 68, AB 1033, SB 9 — with no clear picture of what each one actually changed. The short version: over the last several years, a series of California state laws stripped away the local rules that used to block ADUs, and the result is one of the most permissive ADU environments in the country. In the City of LA, roughly one in three newly permitted homes now includes an ADU (CA YIMBY, 2024).

This guide walks the key California ADU laws as they stand in 2026, bill by bill, with a summary table you can scan. Just as important, it flags the two places homeowners get burned by the new laws: the "60-day approval" promise (a statute, not reality for custom builds) and the CalHFA $40,000 grant (currently paused). We're a vetted directory of licensed LA builders, not attorneys — treat this as an orientation, and verify specifics with California HCD's ADU Handbook and your city.

The 30-second answer

California's ADU laws (SB 13, AB 68/881, AB 2221/SB 897, AB 1033, SB 9, and now SB 543) make ADUs ministerial — meaning approval is by-right, not discretionary. There's no minimum lot size, parking is waived near transit, the state guarantees up to 800 sq ft / 16 ft on any single-family lot, and as of Jan 1, 2026, cities must tell you within 15 business days whether your application is complete. The catch: the famous "60-day" approval is a deadline that only kicks in once your application is complete — real LA custom builds still run roughly 3–6 months to permit.

What's in this guide

1. The bill-by-bill summary table
2. SB 13 (2020)
3. AB 68 / AB 881 (2020)
4. AB 2221 / SB 897 (2023)
5. AB 1033 (2024)
6. SB 9 (2022)
7. SB 543 (2026)
8. The 60-day myth vs. reality
9. The CalHFA grant status
10. What this means for LA in 2026
11. FAQ

The roundup at a glance

Here's every major California ADU bill, what year it took effect, and what it actually changed. Detailed notes on each follow below.

Sources: CA HCD ADU Handbook and Holland & Knight, 2026 housing laws.

SB 13 (2020) — the 60-day clock and the fee waiver

SB 13 is the foundation. It made ADU permits ministerial — meaning a city must approve a code-compliant application on a staff level without a public hearing or discretionary review — and it set a 60-day deadline for that decision once an application is complete. Critically, it also exempted ADUs under 750 sq ft from impact fees, and scaled fees for larger units to the size of the primary home (HCD ADU Handbook). On a typical LA ADU, that fee waiver alone can save thousands.

AB 68 / AB 881 (2020) — no more lot-size or parking excuses

This pair gutted the local rules cities used to quietly block ADUs. They removed minimum lot size requirements (you can build an ADU on essentially any single-family or multifamily lot), cut or eliminated most parking requirements, and tightened approval timelines so cities couldn't slow-walk applications. Before these bills, a city could demand replacement parking or claim your lot was "too small" — both excuses are now off the table.

AB 2221 / SB 897 (2023) — height, transit parking, and objective standards

The 2023 cleanup bills closed loopholes cities were using to deny projects. They raised height limits — generally to 16 ft, and up to 18 ft or more near major transit stops or on multifamily lots — barred parking requirements within one-half mile of transit, required cities to use objective (not subjective) review standards, and addressed cities denying ADUs over front-setback technicalities. In transit-rich LA, the parking waiver is a big deal: no more carving up your yard for a mandatory stall (Holland & Knight; see also our guide to ADU vs. JADU rules).

AB 1033 (2024) — selling your ADU as a condo (where the city opts in)

AB 1033 is the headline-grabber: it allows homeowners to sell an ADU separately from the main house as a condominium. The catch most articles bury is that it's opt-in by city — the law only applies where the local government has adopted an ordinance to permit condo conversions. LA participation varies, and you can't assume it's available at your address. Treat AB 1033 as a "maybe, locally" item and confirm with your city before building around it.

Why "ministerial" is the word that matters

Almost every bill above shares one goal: making ADUs ministerial / by-right. That means a compliant project can't be killed by a neighbor's objection or a planning commission's mood — it's approved on objective standards. It's the legal reason LA went from 80 ADU permits in 2016 to roughly 7,160 in 2022 (CA YIMBY).

SB 9 (2022) — lot splits and duplexes (with an HOA asterisk)

SB 9 is often grouped with ADU law, but it's a different tool. It lets owners in single-family zones do an urban lot split and/or add a duplex — potentially turning one lot into up to roughly four units. It's powerful for the right property, but it comes with conditions (owner-occupancy, lot-size minimums for splits) that ADUs don't have.

HOA caveat: SB 9 does not override your CC&Rs

This trips people up. SB 9 strips away city zoning barriers — it does not override a homeowners association's CC&Rs. If you're in an HOA, its recorded restrictions can still legally block or limit a lot split or duplex. Read your CC&Rs before counting on SB 9. (State ADU law generally limits how much HOAs can restrict ADUs, but SB 9 is a separate statute — don't assume they work the same way.)

SB 543 (effective Jan 1, 2026) — the 15-business-day completeness rule

The newest piece, effective January 1, 2026, attacks a common stalling tactic: cities sitting on applications without saying whether they're even complete. SB 543 requires a city to make a completeness determination within 15 business days — it must tell you whether your application is complete (and if not, exactly what's missing) within that window (Holland & Knight, 2026 housing laws). That matters because the 60-day approval clock only starts once your application is deemed complete — so a faster completeness check tightens the whole timeline.

The honest truth about "60-day approval"

You'll see "ADUs approved in 60 days!" everywhere. Here's what's actually true. The 60 days is a statutory deadline from SB 13 — the legal maximum a city has to issue a ministerial decision after your application is deemed complete. It is not the start-to-finish timeline for a custom build, and treating it as one sets you up for disappointment.

In the real world, custom LA ADU permitting runs roughly 3–6 months, and end-to-end (design through permit through construction) is more like 8–14 months. The Terner Center measured LA County at about 147 days from application to permit outside the coastal zone, and 260 days inside it. Where the fast number is real is pre-approved standard plans: those can hit roughly 21–30 days, and AB 1332 requires cities to approve pre-approved plans within 30 days.

What this means for you

If a builder or salesperson promises your custom ADU will be permitted in 60 days, treat it as a red flag — it confuses a legal deadline with reality. A vetted, honest builder will quote you a realistic 3–6 month permit window (faster on a standard plan) and walk you through the gating items. For the full breakdown, see how long it really takes to build an ADU in LA and our LA ADU permit guide.

Not sure which of these laws apply to your lot?

Send us your address and we'll run a free desk check — zoning, lot size, setbacks, transit-parking waivers, overlays — and tell you straight whether an ADU is viable, before you spend a dollar on plans.

A note on the CalHFA $40,000 grant

Because it comes up constantly: the CalHFA ADU Grant Program — the well-known program that offered up to $40,000 toward predevelopment and closing costs — is currently paused / out of funds. The last round of funding was fully allocated back in December 2023, and there is no confirmed relaunch as of 2026. It may reopen if the state appropriates new money, but you should not build your financing plan around it today.

Verify before you count on it

Do not assume the CalHFA grant is available. Check the program's current status directly at calhfa.ca.gov/adu (background and context: RenoFi's CalHFA grant overview). For ways to fund an ADU that don't depend on a paused grant, see our ADU financing guide for LA.

What these laws mean for an LA homeowner in 2026

Strip away the bill numbers and here's the practical takeaway for your property:

• Your lot almost certainly qualifies. No minimum lot size means a small lot is no longer a disqualifier — the state guarantees you can build at least an 800 sq ft, 16-ft-tall ADU on any single-family lot, and the City of LA allows detached ADUs up to 1,200 sq ft (LA ADU rules).
• Setbacks are generous. Detached ADUs need just 4 ft side and rear setbacks — far less than a typical home addition.
• Parking is often waived. Within one-half mile of transit, the city can't require you to add a parking space — and most of LA is transit-served (Holland & Knight).
• Fees are capped or waived. If your ADU is under 750 sq ft, you're exempt from impact fees entirely.
• Approval is by-right, but not instant. Ministerial review means neighbors can't veto you — but plan on a realistic 3–6 month permit timeline for a custom build.

The laws cleared the path; the work now is doing the project right — confirming your specific zoning, sizing the unit to your goals, and hiring a licensed builder who knows LADBS. That's where most homeowners want a second set of eyes. If you're still at the "could I even build one?" stage, start with can I build an ADU in Los Angeles, then read up on the different types of ADUs in California and, if the term is new to you, what an ADU actually is.

Laws change — verify before you build

California passes new housing bills almost every legislative session, and cities adopt local ordinances on top of the state floor. The roundup above is accurate for 2026, but always confirm current rules, fees, and program status with LADBS, CSLB, and CalHFA — or let us run your address through a free check so you're working from your property's actual numbers, not a generic article.

California ADU law questions, answered

What are the new California ADU laws in 2026?

The framework is built on SB 13 (2020), AB 68 and AB 881 (2020), AB 2221 and SB 897 (2023), AB 1033 (2024), and SB 9 (2022). The newest piece is SB 543, effective January 1, 2026, which requires a city to tell you within 15 business days whether your ADU application is complete. Together these laws make ADUs ministerial, remove minimum lot size, waive parking near transit, and cap fees.

Can I really get an ADU approved in 60 days in Los Angeles?

The 60 days is a statutory deadline, not a real-world build timeline. It's the maximum a city has to issue a ministerial decision after your application is deemed complete. In practice, custom LA ADU permitting runs about 3 to 6 months, and the Terner Center measured LA County at roughly 147 days from application to permit outside the coastal zone and 260 days inside it. Pre-approved standard plans are the exception and can be approved in about 21 to 30 days.

Is the CalHFA $40,000 ADU grant still available?

No. The CalHFA ADU Grant Program is currently paused and out of funds. The last round was fully allocated in December 2023 and there is no confirmed relaunch as of 2026. It may reopen if the state appropriates new money, so verify the current status directly at calhfa.ca.gov before relying on it.

Does AB 1033 let me sell my ADU separately?

Potentially, but only where your city has opted in. AB 1033 allows homeowners to sell an ADU as a separate condominium, but it only applies in cities that have adopted an ordinance permitting condo conversions. Participation varies across Los Angeles, so confirm with your local government before assuming you can sell your ADU separately.

Does SB 9 override my HOA's rules?

No. SB 9 removes city zoning barriers to lot splits and duplexes in single-family zones, but it does not override a homeowners association's CC&Rs. If you live in an HOA, its recorded restrictions can still legally limit or block an SB 9 project, so read your CC&Rs before counting on it.

Is there a minimum lot size for an ADU in California?

No. AB 68 and AB 881 removed minimum lot size requirements, so you can build an ADU on essentially any single-family or multifamily lot. The state guarantees you can build at least an 800 square foot, 16-foot-tall ADU regardless of local limits, and the City of LA allows detached ADUs up to 1,200 square feet.

What is the SB 543 15-business-day rule?

SB 543, effective January 1, 2026, requires a city to determine whether your ADU application is complete within 15 business days. If it is not complete, the city must tell you exactly what is missing. This matters because the 60-day approval clock only starts once your application is deemed complete, so a faster completeness check tightens your overall timeline.