







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Torrance, CA
Fielding ADU Torrance builds accessory dwelling units, garage conversions, and room additions across the South Bay. Torrance jobs run into two recurring conditions: 1940s – 1960s tract homes on flat 5,000 – 7,000 sq ft lots, and heritage tree ordinances that can shape where a structure fits. Reed Calloway leads the Torrance crew. We price the work in writing before anything starts, and every project carries a one-year written guarantee. Call (424) 358-3068 to get a number for your lot.
Why Torrance Homes Are Different

Most Torrance homes were built between the 1940s and 1960s as single-family tract houses. The Torrance Tract and Old Torrance areas sit on flat lots that range from about 5,000 to 7,000 square feet. That sounds like enough room, but the rear setbacks and the city’s Tree City USA heritage tree ordinances often decide where an ADU can actually go. A mature protected tree near the property line can push a build toward the opposite side of the yard, or trigger a setback variance (the city’s written permission to build closer to the property line than the standard rule allows). We read the lot against those rules before drawing anything.
The climate also splits the city. Coastal Torrance stays mild with a strong morning marine layer, while inland pockets run noticeably hotter by afternoon. That range favors mini-split heating and cooling over full ducted systems, and it makes corrosion-resistant hardware worth specifying on exterior fasteners and structural connectors. In the Hollywood Riviera hillside area, some pre-1960 homes have crawl spaces too tight to access from inside, so new sewer laterals for an ADU often go in by directional drilling instead of open trenching. That changes the bid and the schedule, and an estimator who has not worked Torrance may miss it entirely.
Our Main Torrance Services
Torrance homeowners call us most often for room additions and garage conversions, with detached backyard ADUs close behind. Each service has its own Torrance page with pricing and permitting detail.
Garage Conversion Contractor in Torrance
Many Torrance homes have detached garages from the original tract build. Converting one means bringing the slab, walls, and roof up to current habitable standards, then running new electrical and plumbing. On flat lots, drainage becomes the quiet issue: the finished floor has to work with existing grade so water moves away from the structure. We handle the permit set, the build, and the final inspection. Details and price ranges are on the Garage Conversion Contractor in Torrance page.

ADU Builders in Torrance
Backyard ADUs in Torrance range from compact one-bedroom prefab units to custom two-bedroom builds. Lot size and tree placement usually drive the first design conversation. We work with prefab platforms like Abodu and Boxabl when the lot and access allow, and we build conventional stick-frame when the design needs more flexibility. The ADU Builders in Torrance page covers the full process and what these projects cost locally.

Room Addition Contractor in Torrance
A room addition on a Torrance tract home means tying a new foundation and roofline into a structure that has stood for sixty or eighty years. Matching floor heights, rooflines, and exterior material matters more here than on a new build. We also watch foundation type, since some of the older slabs in the Torrance Tract need leveling or reinforcement before the addition ties in. See typical ranges on the Room Addition Contractor in Torrance page.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Torrance
We install and finish prefab ADU platforms including Dvele, Mighty Buildings, and Plant Prefab, with parts sourced through our supplier network and staged before the unit arrives. For most prefab jobs, we can schedule installation within the normal permit window after the foundation passes inspection.
Pricing for ADU Company in Torrance, CA
| Service | Typical range in Torrance |
|---|---|
| Detached ADU (prefab, 400 – 600 sq ft) | $180,000 – $280,000 |
| Detached ADU (stick-built, 400 – 600 sq ft) | $220,000 – $340,000 |
| Garage conversion (300 – 500 sq ft) | $120,000 – $190,000 |
| Room addition (300 – 500 sq ft) | $130,000 – $210,000 |
| Site prep and foundation | $15,000 – $35,000 |
| Drainage and grading | $6,000 – $18,000 |
| Sewer lateral via directional drilling (Hollywood Riviera) | $8,000 – $20,000 |
| Electrical panel upgrade | $5,000 – $12,000 |
| Mini-split HVAC system | $8,000 – $16,000 |
Heritage tree protection, directional drilling for sewer laterals, and pad-level grading on sloped lots push prices higher in Torrance than in flat inland cities. Whatever the number ends up being, it goes in writing before work starts, and it does not change at the door.
Neighborhoods We Serve in Torrance
We work across Torrance, from the coastal side to the inland tract neighborhoods. Response time for estimates is typically within a few business days citywide.
- Old Torrance
- Torrance Tract
- Hollywood Riviera
- Southwood
- Walteria
Service Area – Cities Near Torrance
Fielding ADU Torrance also serves nearby South Bay communities. If you are just outside the Torrance city line, we cover Harbor City, CA, Lomita, CA, Redondo Beach, CA, and Compton, CA. Scheduling and dispatch are coordinated from our Los Angeles office, and crews work locally in Torrance.
Serving Torrance, CA - Our Local Coverage Area
We’re based in the Torrance area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Torrance

We usually schedule a site visit within a few business days of your call. The visit covers lot conditions, setbacks, tree placement, and a first read on access for equipment. Schedule it by calling (424) 358-3068.
Yes. Torrance requires building permits for ADUs, garage conversions, and room additions, and tree ordinances can add review steps. We pull the permits, schedule the inspections, and stand behind the work for one full year under the Garrison Standard. Call (424) 358-3068 with your address and we can tell you what applies to your lot.
The Garrison Standard covers workmanship defects for 365 days from completion. If something we built fails within that period, we return and correct it at no charge. The guarantee is written, not verbal, and it covers the full project. Call (424) 358-3068 for a free estimate and a written price before any work starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Torrance Customers Say
"Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B."Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J."Honest feedback on what the lot could fit. Told me up front what would fit on the lot and what the setbacks would allow."
- Rita C.





