West Carson · ADU permits
ADU permits in West Carson
How to build a ADU in West Carson: permit pathway through LA County Public Works (Building & Safety), drawings required, local watch-outs, and a free address-level wizard for your West Carson lot.
West Carson context
West Carson is unincorporated despite being surrounded by Carson and Torrance city limits. Permits run through LA County DPW Building & Safety via EPIC-LA. The Harbor-UCLA Medical Center campus + adjacent LA County medical facilities anchor employment and drive strong long-term rental demand from medical staff.
- Permit agency
- LA County Public Works (Building & Safety)
- Median lot size
- 5,200 sqft
- ADU permits issued (2025)
- 52Source: HCD 2025 total (1,278) distributed proportionally across 2024 per-area shares. 2024: 60.
West Carson ADU ordinance
Verified against LA County Public Works (Building & Safety)'s published ordinance on 2026-04-15. State law (CA Government Code §65852.2) overrides any locally-stricter rule.
Max detached ADU size
1,200 sqft (state default)
Max ADU height
16 ft / 18 ft with second-story setbacks
Setbacks
4 ft side / 4 ft rear (state minimum)
Permitting agency
LA County Public Works (Building & Safety)
Local processing time
60 days from complete submittal (state-mandated)
Drawings you'll need to submit
Type your address. See if you can build an ADU, what kind, and exactly how to permit it.
- Site plan (parcel layout + setbacks)
- Proposed floor plan
- Elevations (each side)
- Title 24 CF1R energy compliance
PermitPathLA generates the site plan free from your West Carson address. The other drawings come from your architect or plan firm — we list pre-approved options in the wizard.
West Carson watch-outs for ADU
Local quirks
Don't file with Carson or Torrance — it's LA County
West Carson residents frequently start permits with Carson or Torrance city, then have to restart with LA County. Verify jurisdiction first.
Harbor-UCLA staff rental demand
Harbor-UCLA Medical Center + adjacent LA County medical facilities employ thousands of staff seeking medium-term rentals. Strong professional-tenant ADU economics.
Run your West Carson address through the wizard
We pull your parcel polygon from county GIS, apply West Carson ordinance + state baseline rules, generate the site plan, and walk you through the LA County Public Works (Building & Safety) submittal. Free, no signup.