What an ADU costs in Redondo Beach (2026)
Redondo Beach runs its own ADU permits and has separate ADU rules for its Coastal Zone. Here are typical numbers, the local rules, and your next step.
Typical ADU numbers in Redondo 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 $4,900 a month for 750 sq ft.
- Home value nearby: about $1,100 per sq ft (Westside and South Bay area).
Run the free ADU and new home cost calculator for Redondo Beach
ADU permits and local rules in Redondo Beach
Who runs permits
City of Redondo Beach Community Development: the Planning Division and Building and Safety.
Pre-approved ADU plans
Yes. Building and Safety has a pre-approved ADU plan page under state law (AB 1332). Ask us which plans are on the list now.
What can slow you down
- Lots in the Coastal Zone follow a separate set of ADU rules.
- Coastal parking rules can be tight near the beach.
- Older unpermitted units may need to be legalized first.
Sources: City of Redondo Beach Building and Safety ADU pages (AB 1332 and AB 2533). State ADU law. General information, not legal advice. Updated October 2026.
Free lot check in Redondo 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 Redondo Beach
- What a new home costs in Redondo Beach
- What a restaurant, shop or office build-out costs in Redondo Beach
- What an apartment building costs in Redondo Beach
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