What an ADU costs in West Hollywood (2026)
West Hollywood runs its own ADU permits and offers a free city ADU plan. Here are typical numbers, the local rules, and your next step.
Typical ADU numbers in West Hollywood
- 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 West Hollywood
ADU permits and local rules in West Hollywood
Who runs permits
City of West Hollywood Community Development: the Planning Division and Building Division.
Pre-approved ADU plans
Yes. The city offers one free plan for a one-story detached ADU, plus plans from outside designers. Pre-approved plans are reviewed within about 30 days.
What can slow you down
- Most rental buildings built before mid-1979 fall under city rent rules.
- Changing a pre-approved plan beyond what is allowed removes its fast-track status.
- Historic buildings and districts can need extra review.
Sources: City of West Hollywood Pre-Approved ADU Plan Program page; West Hollywood Rent Stabilization pages. State ADU law. General information, not legal advice. Updated October 2026.
Free lot check in West Hollywood
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 West Hollywood
- What a new home costs in West Hollywood
- What a restaurant, shop or office build-out costs in West Hollywood
- What an apartment building costs in West Hollywood
Cost guides for more of LA County
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