How United Build Partners helps Torrance homeowners
We're an ADU advisory and contractor-matching service, not the construction company. We start with a free review of your Torrance property and goals, help you understand whether the city's pre-approved designs or Coastal Commission requirements apply to you, and — when it's a good fit — connect you with up to three contractors in our network.
ADU rules and permitting in Torrance
Torrance's ADU rules build on the same statewide floor every California city follows — ministerial review and a 60-day clock on complete applications (see our California ADU laws guide). The city adds its own pre-approved design option and a specific coastal review step.
What's specific to Torrance
- Unit allowance: single-family lots generally get one ADU plus one Junior ADU; multi-family lots can add up to two new detached ADUs plus at least one conversion ADU.
- Size: detached ADUs up to 1,200 square feet; attached ADUs capped at 50% of the primary home's floor area or 1,200 square feet, whichever is less; JADUs up to 500 square feet.
- Setbacks: generally 4 feet from rear and interior side property lines for new construction — front and street-side setbacks can be greater.
- Parking: one space per unit, which can be tandem on your existing driveway.
Pre-Approved Accessory Dwelling Units
The city's Building & Safety Division offers a dedicated pre-approved ADU design option, intended to streamline the design and review process compared to a fully custom plan.
Coastal Zone properties: if your property is within the Coastal Zone, the California Coastal Act applies, and a copy of your California Coastal Commission permit approval must be filed with the Community Development Department as part of your building permit application — a meaningfully different (and often longer) process than a standard inland ADU.
Property and lot considerations
Torrance spans coastal neighborhoods near the beach cities through more inland residential tracts. Confirming whether your specific address falls within the Coastal Zone is one of the first things worth checking, since it changes your permitting path meaningfully — a property review is the most direct way to find out.
Common ADU types for Torrance homeowners
Homeowners drawn to a faster, more predictable process often look at the city's pre-approved detached ADU designs. Homeowners with an existing garage often consider a garage conversion instead, and a Junior ADU remains the lowest-cost option for converting existing interior space.
Cost factors in Torrance
Construction costs in Torrance generally track the same $285–$350 per square foot range as the rest of our Los Angeles County service area — see our full ADU cost guide. Using a pre-approved design can reduce design costs; Coastal Zone properties should budget extra time (and potentially cost) for the Coastal Commission filing step.
Financing your Torrance ADU
Most homeowners fund construction through a HELOC, cash-out refinance, or dedicated construction loan — see our ADU financing overview for how each works.
Rental income and property value in Torrance
Torrance's mix of coastal and inland neighborhoods supports varying rental demand, and actual achievable rent depends heavily on your specific location and unit — we don't have a verified, current rent figure to quote. See our ADU rental income guide and ROI calculator to work through your own numbers.
How our process works
Frequently asked questions
If your property is within the Coastal Zone, yes — the California Coastal Act applies, and a copy of your Coastal Commission permit approval must be filed with the city as part of your building permit application. Confirm your specific address's Coastal Zone status with the Community Development Department.
A dedicated set of pre-approved designs intended to streamline the design and permitting process compared to a fully custom plan. Confirm current plan availability and any restrictions with the Building & Safety Division.
Lots zoned for multi-family use can generally add up to two new detached ADUs plus at least one conversion ADU, in addition to the existing units — a more generous allowance than a standard single-family lot.