ADU feasibility in Long Beach: rules, costs & what you can build (2026)
Long Beach has set a goal of permitting 400–500 new ADUs a year as part of its broader housing plan, and the city currently administers ADU permitting directly under state law while a local ordinance is in development — which in practice means the statewide rules apply with little local variation. Here are the 2026 rules, typical costs and rents, and how to check your specific lot.
Long Beach ADU rules at a glance (2026)
- Max detached ADU
- 1,200 sq ft
- Side / rear setback
- 4 ft
- Owner-occupancy
- Not required
- Parking
- 1 space · widely exempt
- Approval
- Ministerial · 60-day
- Allowed zones
- Most res. (excl. R-3-T, R-4-M)
Long Beach applies California's statewide ADU framework directly to most properties. A parking exemption applies when the property is within a half-mile of public transit, when the ADU is a conversion of an existing structure, or when the property is in a historic district — exemptions that cover a large share of Long Beach's housing stock.
What the rules mean for feasibility
The 1,200 sq ft cap and 4-ft setbacks set the legal envelope, but rents in Long Beach vary meaningfully by sub-market — coastal neighborhoods near Belmont Shore and the A Line corridor command materially higher rent than inland areas like Bixby Knolls or Lakewood Village, which changes which unit size and finish level actually maximizes return. Because Long Beach is still administering ADUs under direct state law rather than a finalized local ordinance, it's worth confirming current parking and design standards with the Development Permit Center before finalizing plans, since the local ordinance projected for adoption may add specifics not yet reflected in the state baseline.
Cost & rent snapshot
Typical 2026 ranges for detached new construction; garage conversions run lower, roughly $70k–$150k. Coastal-adjacent neighborhoods and proximity to the A Line both push rents toward the top of these ranges — run your address below for site-specific numbers.
See what your Long Beach lot can actually build.
Analyze your ADU now →Frequently asked questions
How big an ADU can I build in Long Beach?
Up to 1,200 sq ft for a detached ADU under California standards, which Long Beach currently administers directly. Your real buildable size is the smaller of that and what fits after setbacks and your home's existing footprint.
Do I have to live on the property to rent it out?
No. California state law permanently removed owner-occupancy for standard ADUs statewide. JADUs sharing a bathroom with the main house are the exception.
Is parking required?
Generally one space, but it's waived within a half-mile of transit, for conversions, and in historic districts — exemptions that cover much of Long Beach.
Can I sell a Long Beach ADU separately?
As of the most recently reviewed city guidance, Long Beach had not adopted an AB 1033 condo-conversion ordinance. Confirm current status with the city before assuming this option is available.