What an ADU costs in Long Beach (2026)
Long Beach runs its own permits and has its own pre-approved ADU plans. Here are typical numbers, the local rules, and your next step.
Typical ADU numbers in Long Beach
- A 750 sq ft backyard ADU with a standard finish costs about $300,000 to build, all in: building, site work, city fees and design.
- Typical ADU rent: about $4,300 a month for 750 sq ft.
- Home value nearby: about $850 per sq ft (Close-in area).
Run the free ADU and new home cost calculator for Long Beach
ADU permits and local rules in Long Beach
Who runs permits
Long Beach Development Services (permits, planning and zoning).
Pre-approved ADU plans
Yes. Long Beach has pre-approved ADU plans (PAADU), including an 800 sq ft 2-bedroom and a 415 sq ft 1-bedroom. They can be approved over the counter.
What can slow you down
- The Coastal Zone near the beach can need extra approval.
- Historic districts can add design review.
- Ask us about noise rules near the airport.
Sources: Long Beach Development Services pre-approved ADU (PAADU) page. State ADU law. General information, not legal advice. Updated October 2026.
Free lot check in Long Beach
Send Hemisphere A&E your address. We look up your zoning and lot size, what fits (ADU, junior ADU, SB 9, new home, apartments, remodel or business space), red flags like fire zones or hillside rules, and a rough cost range. No cost, no pressure. Email info@hemisphereae.com or call (619) 762-7144.
More cost guides for Long Beach
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