What an ADU costs in Manhattan Beach (2026)
Manhattan Beach runs its own ADU permits, and part of the city sits in the Coastal Zone. Here are typical numbers, the local rules, and your next step.
Typical ADU numbers in Manhattan 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 $5,650 a month for 750 sq ft.
- Home value nearby: about $1,600 per sq ft (Prime area).
Run the free ADU and new home cost calculator for Manhattan Beach
ADU permits and local rules in Manhattan Beach
Who runs permits
City of Manhattan Beach Community Development: the Planning Division and Building and Safety.
Pre-approved ADU plans
We didn't find a pre-approved ADU plan program. Ask us for the latest.
What can slow you down
- Lots in the Coastal Zone may need a coastal permit, too.
- Some coastal lots can be appealed to the Coastal Commission.
- Small, tight beach lots make setbacks and parking hard.
Sources: City of Manhattan Beach Planning handouts and Coastal Development Permit instructions. State ADU law. General information, not legal advice. Updated October 2026.
Free lot check in Manhattan 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 Manhattan Beach
- What a new home costs in Manhattan Beach
- What a restaurant, shop or office build-out costs in Manhattan Beach
- What an apartment building costs in Manhattan Beach
Cost guides for more of LA County
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