Can I Build an ADU? Check If Your LA Property Qualifies — Free | 1-800-ADU-Pros
Wondering if you can build an ADU on your LA property? Get a free address check of zoning, lot size & setbacks, then a vetted, CSLB-licensed builder confirms feasibility on-site. California has no minimum lot size.
Written by 1-800-ADU-Pros
Can I Build an ADU? Check If Your LA Property Qualifies — Free
Before you spend a dollar or call a contractor, find out if your lot can even support an ADU. Enter your address and we'll check zoning, lot size, and setbacks — then match you with a vetted, CSLB-licensed LA builder who confirms it on-site. No cost, no commitment.
We match you with vetted, California-licensed ADU builders in your area — no guesswork, no cold-calling contractors.
Most LA homeowners qualify. Find out in 24 hours.
The #1 question we hear is "is my lot even big enough — is it legal here?" The good news: in California there is no minimum lot size for an ADU, and they're allowed on virtually every single-family and multifamily lot. We pull your address and tell you straight whether you likely qualify — for free.
- We check your zoning, lot size, setbacks & overlays
- You get a plain-English "you likely qualify" answer
- No cost, no obligation, no pushy contractor calls
Two free steps, zero commitment.
1-800-ADU-Pros is a referral and pre-qualification service — not a contractor. We do the desk research, then hand you to a vetted, licensed builder for the on-site work.
1 Free · Remote
Free property pre-analysis
We pull your address and assess feasibility on paper — the fast, free first filter.
- Zoning & permitted ADU types for your lot
- Lot size and required setbacks
- Overlays, transit proximity & parking rules
- A straight "you likely qualify" answer
2 Free · On-Site
Free on-site feasibility assessment
If it looks viable, a vetted, CSLB-licensed builder visits to confirm the real-world details.
- Electrical panel capacity for a new unit
- Water, sewer lateral & utility connections
- Access, grading & the best layout for your yard
- No cost, no commitment to build
What actually decides if you can build.
California's statewide ADU laws override most local restrictions. Here are the rules that determine eligibility on almost every LA property.
0 sq ft
No minimum lot size
California removed minimum-lot-size barriers under state ADU law. If you own a single-family or multifamily lot, lot size alone almost never disqualifies you.
4 ft
ADU setbacks in Los Angeles
The state caps required side and rear setbacks for a detached ADU at 4 feet. Existing structures converted to an ADU need no added setback.
800–1,200 sq ft
ADU size limits
State law guarantees at least 800 sq ft / 16 ft of height regardless of local limits; the City of LA allows detached ADUs up to 1,200 sq ft.
½ mile
Parking often waived
If your property is within roughly a half mile of transit, the parking requirement for your ADU is waived under California ADU rules.
~1%
Taxes stay protected
A common myth: building an ADU does not reassess your whole home. Only the new ADU is assessed (about 1% of its value/yr); your main home keeps its Prop 13 basis.
60 days*
Ministerial approval
ADU permits are ministerial — no public hearings. The 60-day clock is the statute; *real-world custom builds run 3–6 months (see the timeline note below).
ADU vs. JADU.
Which one fits your property changes what you can build — and how fast. Many LA lots can do both at once.
| ADU (Accessory Dwelling Unit) | JADU (Junior ADU) | |
|---|---|---|
| What it is | A fully independent second home — detached in the backyard, attached to the house, or a garage conversion. | A small unit (up to 500 sq ft) carved out of the existing house's footprint, per California HCD. |
| Max size | Up to 1,200 sq ft detached in the City of LA (800 sq ft guaranteed statewide). | 500 sq ft maximum, within the walls of the primary dwelling. |
| Kitchen | Full kitchen. | Efficiency kitchen allowed; may share a bathroom with the main house. |
| Owner-occupancy | Generally not required for ADUs permitted in the current window. | Owner must live on the property (main house or the JADU). |
| Best for | Rental income, an aging parent, or a backyard guest house with its own front door. | Lower-cost conversion of a spare bedroom or attached space — fastest path. |
What other ADU sites won't tell you.
The "60-day permit" is the law, not the reality.
California requires cities to approve or deny a complete application within 60 days, but that statute is routinely missed on custom builds — real LA custom permitting runs about 3–6 months, with correction loops being the slow part. Pre-approved LADBS Standard Plans can hit 21–30 days. Any builder promising "permits in 60 days" on a custom design is over-selling.
The $40,000 CalHFA grant is currently paused.
The CalHFA ADU Grant (up to $40,000 toward pre-development costs) is paused / out of funds — its last round was fully allocated in December 2023, with no confirmed relaunch. Beware any page or rep treating it as money you can count on today. We'll help you map the financing path that actually exists, and flag the grant if it reopens.
A licensed contractor can't legally take more than $1,000 up front.
California law caps a contractor's deposit at $1,000 or 10% of the contract — whichever is less — so on any real ADU the cap is effectively $1,000. "Pre-construction retainers," "material lock-in," or "onboarding fees" that ask for more are red flags. Every builder in our directory is CSLB license-verified, so you can confirm active status, bond, and complaint history yourself.
Vetted, CSLB-licensed LA builders.
Once your property pre-qualifies, we route you to a pre-screened builder in your area for the free on-site feasibility visit. Every builder's CSLB number is shown on their profile.
[
GC
Goldenline Construction
✓ CSLB #989378 · Class B · Active
Serves: Woodland Hills, West Hills, Van Nuys, Granada Hills, Encino & Sherman Oaks
★ 4.9 / 5 across Yelp, Google & Houzz
View profile →
](/builder/goldenline-construction)[
DH
Dwell Homes Los Angeles
✓ CSLB #1030158 · Class B · Active
Serves: Valley Village, the San Fernando Valley & greater Los Angeles
★ Reviewed on Yelp, Google & Houzz
View profile →
](/builder/dwell-homes-los-angeles)[
LA CCS
LA CCS
✓ CSLB #1047699 · Class B · Active
Serves: the San Fernando Valley, Glendale, Burbank, Pasadena, the San Gabriel Valley & LA County
View profile →
](/builder/la-ccs)
Once you know you qualify, here's what's next.
Qualifying is step one. These guides walk you through the rest of the journey — and every one of them funnels back to your free property check.
- How to get an ADU permit in Los Angeles — the full process, cost, and timeline (ZIMAS → ePlanLA → C of O).
- How much does an ADU cost in LA? — real 2026 cost ranges, what drives the price, and the hidden utility line items.
- How to finance an ADU — HELOC vs. cash-out refi vs. renovation loans, and the CalHFA grant status.
- Legalize an unpermitted ADU — already have a backyard unit without a permit? Here's the path.
- Design, permit & build under one roof — one accountable team instead of becoming your own project manager.
Can I build an ADU? — your questions.
The most common questions LA homeowners ask before they qualify their property.
Can I build an ADU on my property in Los Angeles?
Most likely, yes. California ADU law allows an accessory dwelling unit on virtually every single-family and multifamily lot, and there is no minimum lot size. Eligibility comes down to your zoning, setbacks, and a few overlays. The fastest way to know for sure is our free address pre-analysis — enter your details and we'll check it for you, then a vetted builder confirms it on-site.
What are the ADU requirements in Los Angeles?
The core requirements: the lot is zoned for residential use (most are), the detached ADU keeps a 4-foot side/rear setback, and the unit stays within size limits (up to 1,200 sq ft detached in the City of LA, with 800 sq ft guaranteed statewide). Parking is often waived near transit, and ministerial approval means no public hearings. Read the full LA permit process.
What are the ADU setbacks in Los Angeles?
California caps required side and rear setbacks for a detached ADU at 4 feet. If you're converting an existing structure (like a garage) into an ADU, no additional setback is required for the existing footprint. Front-yard setbacks follow your underlying zone.
Is my lot too small to build an ADU?
Almost certainly not. California removed minimum-lot-size requirements for ADUs, so lot size by itself rarely disqualifies a property. Even compact LA lots routinely fit a detached ADU or a garage conversion. Run your address through our free check to confirm.
What's the difference between an ADU and a JADU?
An ADU is a fully independent unit (up to 1,200 sq ft detached in LA) with its own full kitchen. A JADU (Junior ADU) is a smaller unit — up to 500 sq ft — carved from inside the existing house, with an efficiency kitchen and an owner-occupancy requirement. Many LA properties can add one of each. See the ADU vs. JADU comparison above.
Will building an ADU raise my property taxes?
No — not on your whole home. Only the new ADU is assessed (roughly 1% of its construction value per year). Your primary residence keeps its Proposition 13 tax basis. This is one of the most common myths that stops homeowners from building.
How long does it really take to get an ADU permit in LA?
The state statute says cities must approve or deny a complete application within 60 days, but that's often missed on custom designs — real-world LA custom permitting runs about 3–6 months. Pre-approved LADBS Standard Plans can be permitted in 21–30 days. Be skeptical of any builder promising a guaranteed 60-day custom permit.
Is the $40,000 CalHFA ADU grant still available?
Not currently. The CalHFA ADU Grant (up to $40,000 toward pre-development costs) is paused and out of funds — its last round was fully allocated in December 2023, with no confirmed relaunch. We'll help you find the financing path that actually exists today and flag the grant if it reopens.
Does 1-800-ADU-Pros build the ADU?
No. 1-800-ADU-Pros is a referral and pre-qualification service, not a licensed contractor. We do the free property qualification and match you with an independent, vetted, California-licensed (CSLB) ADU builder who performs the on-site assessment and the construction. Each builder's CSLB license number is shown on their profile.
