Torrance · ADU permits
ADU permits in Torrance
How to build a ADU in Torrance: permit pathway through Torrance Community Development Department, drawings required, local watch-outs, and a free address-level wizard for your Torrance lot.
Torrance context
Torrance's ADU ordinance is in Torrance Municipal Code Title 9. The city aligns with the California state baseline plus Torrance Municipal Airport (TOA) Airport-Influence Area construction rules for parcels near the airport. Plan check is typically 45-60 days. Old Torrance — the historic 1912 planned-town core — has Mediterranean-style architectural-compatibility design review.
- Permit agency
- Torrance Community Development Department
- Median lot size
- 6,000 sqft
- ADU permits issued (2025)
- 169Source: Cal HCD Annual Progress Report 2025 (Table A2, BP_ISSUE_DT1 set). Peak: 285 in 2023
Torrance ADU ordinance
Verified against Torrance Community Development Department's published ordinance on 2026-05-12. 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)
TOA Airport-Influence Area construction
Sound-attenuation rules near Torrance Municipal Airport
Affects northwest Torrance parcels.
Old Torrance design review
Mediterranean / Spanish Colonial compatibility for the 1912 planned-town core
Local processing time
45-60 days for standard ADUs
Pre-approved standard plans
None city-specific
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 Torrance address. The other drawings come from your architect or plan firm — we list pre-approved options in the wizard.
Torrance watch-outs for ADU
Overlays that hit a meaningful share of Torrance lots
TOA Airport-Influence Area~18% of parcels
Northwest Torrance parcels near TOA require sound-attenuation construction.
Old Torrance Historic / Design District~6% of parcels
1912 Olmsted/Hewitt-designed industrial-town core. Exterior-visible ADUs face design-review for architectural compatibility.
LAX Airport-Influence Area (northern Torrance)~22% of parcels
Northern Torrance is under the southern LAX flight path. Sound attenuation recommended.
Local quirks
Torrance Unified school fees apply over 500 sqft
Torrance Unified School District (TUSD) charges school facility fees on ADUs over 500 sqft. TUSD is well-regarded — a primary driver of Torrance home premiums.
Old Torrance design review is real but bounded
If your lot is in the Old Torrance core (roughly bounded by Torrance Blvd, Cabrillo, Carson, and Western), design review applies. The review board is generally workable but expects Mediterranean / Spanish Colonial cues.
Toyota US HQ + South Bay employers drive rental demand
Toyota Motor North America is headquartered just north in Plano, but Torrance retains a major regional Toyota office. The South Bay aerospace + medical employment cluster keeps long-term ADU rental demand strong.
Run your Torrance address through the wizard
We pull your parcel polygon from county GIS, apply Torrance ordinance + state baseline rules, generate the site plan, and walk you through the Torrance Community Development Department submittal. Free, no signup.