California ADU rules · Los Angeles County
Can I Build an ADU in Lakewood?
Yes — you can build an ADU in Lakewood. California's statewide ADU law requires every city, including Lakewood, to approve a qualifying accessory dwelling unit by right, plus a junior ADU (JADU) on a single-family lot. What varies city to city are the local specifics below.
Can you build one?
ADUs allowed
CA state lawYes — by right
ADUs and JADUs are allowed by right in all residential and mixed-use zones; ministerial approval, no hearing.
Units on a single-family lot
Local ruleUp to 2 ADUs (attached/detached or conversion) + 1 JADU; never more than 4 total dwellings on lots existing as of Jan 1, 2022
City allows up to 2 ADUs plus 1 JADU, but caps total dwellings at 4 per lot as of Jan 1, 2022.
Units on a multifamily lot
Local ruleUp to 8 detached ADUs (not exceeding number of existing multifamily units) + conversions from non-habitable space (up to 25% of existing units)
Detached ADUs capped at 8 or number of existing units, whichever is less.
Junior ADU (JADU)
Local ruleAllowed
JADUs allowed in R-1, R-A, A, and PD-SF zones.
Size & height
Max detached ADU size
Local rule1,200 sq ft
Detached ADUs may exceed 1,200 sq ft if converting an existing structure.
Max attached ADU size
Local rule50% of primary, >=800
If 50% of primary is less than 800 sq ft, 800 sq ft is the minimum.
Guaranteed minimum size
CA state law800 sq ft
An 800 sq ft ADU must be allowed regardless of FAR/lot-coverage caps; a city also cannot cap an attached ADU below 850 sq ft (1,000 for 2+ bedrooms).
Max JADU size
CA state law500 sq ft
Max height
CA state law16 ft
16 ft baseline; cities must allow 18 ft within ½ mi of a major transit stop or where the primary dwelling is two-story, and 20 ft on a lot with a multistory multifamily building.
Setbacks
Side setback
CA state law4 ft
A city cannot require more than 4 ft side or rear setback; conversions of existing structures are exempt.
Rear setback
CA state law4 ft
Front setback
Local rule20 ft minimum, unless ADU is ≤800 sq ft (then may project into front yard per state law)
ADUs ≤800 sq ft may encroach into front setback.
Separation from main house
Local rule10 ft
10 ft minimum between all buildings on a lot, unless attached.
Parking
Parking required
Local ruleUp to 1 space
1 space per ADU unless exempt; multiple exemptions apply.
Transit parking exemption
CA state lawYes — no parking required near transit & for conversions
No parking may be required within ½ mi walking distance of transit, in a historic district, for an ADU within an existing structure, within one block of car-share, or in certain permit-parking areas.
Garage-conversion replacement parking
Local ruleNot required
No replacement parking required for garage/carport conversions.
Approval, timeline & cost
Approval path
CA state lawMinisterial (by right)
No public hearing or discretionary design review for a qualifying ADU.
Approval timeline
CA state law60 days
The agency must act within 60 days of a complete application — and the ADU is deemed approved if it does not.
Owner-occupancy
Local ruleOnly for a JADU
No owner-occupancy for ADUs permitted before Jan 1, 2025; required for ADUs permitted on/after Jan 1, 2025. JADUs always require owner-occupancy.
Impact-fee waiver
CA state lawWaived under 750 sq ft
An ADU of 750 sq ft or less pays no impact fees (the 750 sq ft threshold itself is exempt under § 66311.5); larger ADUs pay fees proportional to the primary dwelling. JADUs (≤ 500 sq ft) are exempt.
Permits required
CA state lawBuilding permit
Only a ministerial building permit — no conditional use permit or discretionary design review for a qualifying ADU.
Lakewood-specific factors that can change the answer
State law sets the floor, but these local conditions often decide whether a specific parcel works.
Fire hydrant proximity
ADU must be within 450 ft of a fire hydrant; no sprinklers required unless for primary dwelling.
Historic district
Parking exemptions and demolition notice required only in historic districts.
Lakewood allows up to 2 ADUs plus 1 JADU on single-family lots, with a 4-unit cap per lot as of Jan 1, 2022. Detached ADUs may be up to 1,200 sq ft (or larger if converting existing structures), and a 10 ft separation is required between buildings unless attached.
Frequently asked questions
Can I build an ADU in Lakewood?
Yes. California's statewide ADU law requires Lakewood to approve a qualifying accessory dwelling unit ministerial (by right), plus a junior ADU (JADU) on a single-family lot.
How big can an ADU be in Lakewood?
A detached ADU of at least 1,200 sq ft must be allowed, and an ADU of 800 sq ft can never be zoned out by floor-area or lot-coverage limits. A JADU can be up to 500 sq ft.
What are the setback requirements for an ADU in Lakewood?
Side and rear setbacks are limited to 4 ft. 20 ft minimum, unless ADU is ≤800 sq ft (then may project into front yard per state law).
Is parking required for an ADU in Lakewood?
Up to 1 space. No parking can be required within ½ mile of transit, for conversions, or for units inside the primary home. When a garage is converted, replacement parking is not required.
How long does ADU approval take in Lakewood?
A complete application must be acted on within 60 days, with ministerial (by right) — no public hearing or discretionary design review for a qualifying ADU.
Do I have to live on the property to build an ADU in Lakewood?
Owner-occupancy: only for a jadu. ADUs under 750 sq ft are also exempt from impact fees.
Sources
- Lakewood Municipal Code § 9302.21a (ADU), § 9302.21b (JADU); Ord. 2023-6 (2023)
- LMC § 9302.21a.A(1)-(2); § 9302.21b; § 9302.21a.D(1)
- LMC § 9302.21a.A(2); § 9302.21a.D(1)
- LMC § 9302.21b.C(1)
- LMC § 9302.21a.D(3)
- LMC § 9302.21a.D(3), (7)
- LMC § 9302.21a.D(2)
- LMC § 9302.21a.D
- LMC § 9302.21a.D(6)
- LMC § 9302.21a.D(6)(a)
- LMC § 9302.1.B; § 9302.21b.B
- LMC § 9302.21a.D(8)-(9)
- LMC § 9302.21a.D(6)(d); § 9302.21a.D(8)(b)
- Cal. Gov. Code §§ 66310–66342 (ADU Law)
- HCD 2025 Accessory Dwelling Unit Handbook
- Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)
- Cal. Gov. Code § 66321 (size minimums & height)
- Cal. Gov. Code § 66333 (junior ADUs)
- Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)
- Cal. Gov. Code § 66322 (ADU parking; § 66334 covers JADU parking)
- Cal. Gov. Code § 66311.5 (impact fees: none for an ADU ≤ 750 sq ft or JADU ≤ 500 sq ft)
Last updated 2026-06-25. This is an AI-assisted summary of Lakewood's ADU rules, drawn from its published ordinance and California ADU law — general information, not legal advice, and it may be incomplete or out of date. Verify the controlling rule for your specific parcel with Lakewood Planning before relying on it.
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