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 §§ 66310-66342) 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.