What an ADU costs in Mar Vista (2026)
Mar Vista is part of the City of Los Angeles and includes a historic district. Here are typical numbers, the local rules, and your next step.
Typical ADU numbers in Mar Vista
- 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 Mar Vista
ADU permits and local rules in Mar Vista
Who runs permits
LA Department of Building and Safety (LADBS) handles building permits. LA City Planning handles zoning.
Pre-approved ADU plans
Yes. LA's ADU Standard Plan Program lists dozens of plans already checked by LADBS for building code. The city's own plan is free; the rest are bought from their designers. LADBS still checks your lot for zoning and foundation.
What can slow you down
- Homes in the Gregory Ain Mar Vista Tract HPOZ need historic review.
- If your lot has rent-stabilized units, LA tenant rules can add steps.
Sources: LADBS ADU Standard Plan Program page; LA City Planning ADU and HPOZ pages. State ADU law. General information, not legal advice. Updated October 2026.
Free lot check in Mar Vista
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 Mar Vista
- What a new home costs in Mar Vista
- What a restaurant, shop or office build-out costs in Mar Vista
- What an apartment building costs in Mar Vista
Cost guides for more of LA County
- What an ADU costs in Alhambra
- What an ADU costs in Altadena
- What an ADU costs in Arcadia
- What an ADU costs in Beverly Hills
- What an ADU costs in Burbank
- What an ADU costs in Culver City
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- What an ADU costs in El Segundo
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- What an ADU costs in Hawthorne
- What an ADU costs in Highland Park
- What an ADU costs in Inglewood
- What an ADU costs in Lancaster
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- What an ADU costs in Malibu
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