







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Del Aire
Most Del Aire homeowners call us after they’ve already talked to someone who made the process feel vague. That’s why we start differently: a written price before any work begins, a named permit path through LA County Building & Safety, and a schedule you can actually hold us to. We’ve built ADUs on Del Aire lots bounded by the 405, West 118th Place, and the long residential stretches off Isis Avenue. If you’re weighing a detached unit, a garage conversion, or a JADU, call (361) 315-4177 and we’ll walk the lot with you.
Why Fielding ADU Builders Is Del Aire’s Preferred ADU Builders Company

Fielding ADU Builders operates inside the Garrison Partners family, which has been building to The Garrison Standard since 2006. The company is led by Reed Calloway, who set the operating rules: show up in the window, price in writing, build by the book, leave it clean, stand behind it for a year.
In Del Aire, that last part matters more than most people expect. The unincorporated county territory means two different property lines can have two different setback rules, and a lot that looks buildable from the street may not be once the county records come back. We’ve handled enough of those surprises on Del Aire parcels to know when to flag them early, before they become a change order.
Every crew member on a Del Aire job is background-checked and arrives in uniform. You’ll know who is on your property and why they’re there. And when you call, a live person answers, whether it’s noon or midnight. No voicemail, no callback queue.
JADU in Del Aire
A JADU, or Junior Accessory Dwelling Unit, is a conversion of existing space inside the footprint of a single-family home in Del Aire, typically a bedroom with a separate entrance and a small kitchenette, capped at 500 square feet. The appeal here is speed and cost: because the work happens within existing walls, the permit path through LA County stays shorter than a detached build.
When a JADU Makes Sense on Your Lot
On Del Aire lots where the backyard is already tight or the side yards are squeezed by the 405 buffer, a JADU is often the only compliant way to add rentable space without triggering a variance or setback fight. It also avoids the utility trenching cost that a detached ADU carries, since the plumbing and electrical already run to the house.
What a Del Aire JADU Costs
A JADU in Del Aire typically runs $80,000 to $140,000 depending on whether you’re converting an existing bedroom or building out a garage bay wall, adding a kitchenette, or redoing the electrical panel. The price goes in writing before the first wall comes down.
ADU Plans in Del Aire

ADU Plans are the architectural and structural drawings that get submitted to LA County Building & Safety before any framing begins on a Del Aire lot. A good set of plans names the exact setback distances, the roof height, the foundation type, and the utility connection points, and it is drawn to match what the county actually reviews, not what a neighboring city’s checklist would ask for.
Why the Plan Set Runs the Permit
In Del Aire, the plan set is the first place a project wins or loses time. County plan check for unincorporated territory looks at zoning, fire access, and structural calcs differently than Hawthorne or Inglewood would. We’ve seen plan sets get kicked back for missing soil reports or for showing a roof height that exceeds the county’s standard for a single-story ADU on certain Del Aire parcels.
What a Del Aire Plan Set Costs
ADU Plans for a Del Aire project typically run $4,000 to $9,000 for a standard detached unit or JADU, including title-24 energy calcs and structural engineering. That figure is included in your written project price, and Reed Calloway reviews the plan set before it ever reaches the counter.
Trusted Brands We Service in Del Aire
We install and finish prefab and modular ADU platforms from Cover, Dvele, and Boxabl on Del Aire lots where the access is tight and the crane or panel delivery has to be sequenced around the 405 traffic. For conventional builds, we frame with James Hardie siding and coordinate Tuff Shed-style shells when the design calls for a storage or laundry wing. Because we keep relationships with these manufacturers current, Del Aire customers get a realistic lead time on the shell and a local crew that knows how to set it on a county-approved foundation.
Common ADU Builders Problems We See in Del Aire Homes
- Wrong permitting jurisdiction. Homeowners call Hawthorne or Inglewood to start, then discover the address is unincorporated LA County. That mix-up costs weeks. We confirm jurisdiction before the first drawing is drafted.
- Setback surprises on unincorporated parcels. A lot that mirrors its neighbor across the street may carry different county zoning. We pull the county records and measure the actual buildable footprint before pricing the job.
- Utility trenching cost. Running sewer, water, and power to a detached ADU on a Del Aire lot near the 405 corridor can add $15,000 to $35,000 to the budget. We line-item that cost in the written price so it doesn’t appear later as a change order.
- LADWP service upgrades. Many Del Aire homes still carry a 100-amp panel, and a new ADU with a mini-split and electric appliances will trip that. We sequence the panel upgrade ahead of drywall so the schedule stays intact.
Pricing for ADU Builders in Del Aire, CA
In Del Aire, a detached ADU with one bedroom and one bath typically runs $180,000 to $320,000 before permit fees, depending on finish level and site conditions. A garage conversion lands between $120,000 and $200,000. A JADU runs $80,000 to $140,000. The written price you approve on day one is the number on the final invoice, and the 365-Day Done Right Promise covers workmanship for a full year after completion. Call (361) 315-4177 to schedule a free estimate, and we’ll hand you a line-item price before any work starts.
We Also Serve Cities Near Del Aire
Our crews work across the South Bay and Gateway Cities. We serve Del Aire homeowners directly, and we also take on ADU projects in Los Angeles, Long Beach, Anaheim, and Riverside. If your lot sits close to a neighboring city line, call and we’ll confirm the jurisdiction before you spend a dollar on drawings.
Serving Del Aire, CA - Our Local Coverage Area
We’re based in the Del Aire 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 Builders in Del Aire
LA County Building & Safety issues the permit for Del Aire addresses, not the City of Hawthorne or the City of Inglewood. Del Aire is an unincorporated Los Angeles County pocket, and county plan check, inspection scheduling, and zoning review all run through the county’s systems. Call (361) 315-4177 and we’ll confirm your parcel’s jurisdiction before you file anything.
Yes, in most Del Aire zoning cases you can build both a JADU inside the existing home and a detached ADU in the rear yard, as long as the combined square footage and setback requirements are met under county rules. We check both against your specific parcel before pricing. Call (361) 315-4177 to get the numbers on your lot.
The first step is a site visit where we confirm your parcel’s county zoning, measure the actual buildable footprint, and check the electrical panel and utility points. That produces a written, line-item price, not a ballpark. Call (361) 315-4177 to schedule the visit.
A detached ADU in Del Aire typically runs six to ten months from plan submission to final inspection, with JADUs sometimes finishing in four to six months. The biggest schedule variables are county plan check turnaround and LADWP service upgrades. We sequence those early so they don’t stall framing or drywall.
The only things that change a written price are hidden site conditions discovered after demolition, like unrecorded sewer lines or unstable soil, or a change you request, like a different finish package. We put that in writing upfront and we don’t hand you a change order without your sign-off first. Call (361) 315-4177 and we’ll explain how that works on your specific lot.
If you’re planning an ADU in Del Aire, the fastest way to get a real number is to call us. Our ADU Builders team handles the full scope, from first survey to final inspection, with a written price and the 365-Day Done Right Promise behind it. Call (361) 315-4177 to schedule your free estimate.
Written by Reed Calloway, Owner at Fielding ADU Builders, serving Del Aire homeowners with permitted ADU construction and honest written pricing.



