A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Adelanto, CA
Fielding ADU Builders builds ADUs, garage conversions, and room additions in Adelanto, CA. Most Adelanto jobs come down to three things: a flat lot with generous setbacks, a desert climate that punishes cheap materials, and a city permit office that expects plans done right the first time. We price the work in writing before any construction starts, and every project is backed by The Garrison Standard: a full one-year written guarantee on workmanship. Call (361) 315-4177 for a free estimate.
Why Adelanto Homes Are Different
Adelanto sits in the High Desert, where summer temperatures routinely cross 100 degrees and winter nights dip below freezing. That swing puts real stress on framing, stucco, and roofing. We build for it: deeper roof overhangs, high-albedo roofing materials, and insulation above Title 24 minimums so an ADU or room addition stays comfortable without running the AC nonstop.
The housing stock here is a mix of 1980s and 1990s single-story tract homes, many on lots of 7,000 square feet or more. That lot size is an advantage. Most Adelanto properties have enough yard depth for a detached ADU without a setback variance (the city’s written permission to build closer to the property line than the standard rule allows). But older homes often have under-sized electrical panels, so a garage conversion or ADU frequently includes a service upgrade before the framing begins.
Permit review in Adelanto goes faster when the drawings show exactly what the planner expects: lot coverage, fire sprinkler requirements, and separate utility connections. We handle that paperwork as part of the written price.
Our Main Adelanto Services
Adelanto homeowners most often call us for two things: adding a room onto the existing house, and turning a garage into living space. Both are covered below, each with its own dedicated Adelanto page.
Room Addition Contractor in Adelanto
A room addition in Adelanto means matching an existing single-story roofline, extending the slab, and tying into the home’s HVAC. We see a lot of desert-specific choices here: radiant-barrier sheathing, tinted dual-pane windows, and stucco color-matching to keep the addition from looking bolted on. Permits are part of the job, not an afterthought. Room Addition Contractor in Adelanto has full pricing and scope details.
Garage Conversion Contractor in Adelanto
Adelanto garages are usually attached, with slab floors in decent shape and enough ceiling height to work with. The real variables are electrical service, insulation (most High Desert garages have none in the walls), and whether the city requires a carport or uncovered parking replacement on the lot. We handle all three. Garage Conversion Contractor in Adelanto breaks down the process and the numbers.
ADU Builders in Adelanto
Detached ADUs in Adelanto make good use of the larger lots: a 750-square-foot unit still leaves a real backyard. We work with prefab and modular platforms like Cover, Dvele, and Boxabl, and we also build conventional stick-framed ADUs with James Hardie siding where that fits the budget. ADU Builders in Adelanto covers floor plans, site prep, and the permit path.
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 Adelanto
We install and finish ADUs and additions from leading prefab platforms including our brands: Cover, Dvele, Mighty Buildings, and Boxabl. For conventional builds, we use James Hardie siding and Tuff Shed-style structures. Parts and finish materials for these systems are stocked at our Inland Empire office, so Adelanto jobs don’t stall waiting on a backorder.
Pricing for ADU Company in Adelanto, CA
| Service | Typical range in Adelanto |
|---|---|
| Room addition (basic, 200 sq ft) | $80,000 – $120,000 |
| Room addition (primary suite, 400 sq ft) | $140,000 – $210,000 |
| Garage conversion (attached, 1-car) | $45,000 – $75,000 |
| Garage conversion (attached, 2-car) | $70,000 – $110,000 |
| Detached ADU (prefab, under 500 sq ft) | $120,000 – $180,000 |
| Detached ADU (conventional, 750 sq ft) | $190,000 – $290,000 |
| Kitchenette add-on (ADU or garage conversion) | $15,000 – $30,000 |
| Bathroom add-on (ADU or room addition) | $20,000 – $40,000 |
| Electrical panel upgrade (200A) | $3,500 – $6,000 |
| HVAC mini-split (single zone) | $4,500 – $9,000 |
What pushes a price up in Adelanto: site grading on an uneven lot, replacing an aging roof tie-in, or bringing an older service panel up to current city code. The number we put in writing before any work starts is the number on the final invoice. No change orders, no “unforeseen conditions” surprises.
Neighborhoods We Serve in Adelanto
We work across all of Adelanto’s residential areas, from the older subdivisions near Adelanto Road to the newer construction on the north and east edges of town. Most of our crews reach any Adelanto address within about 30 minutes from our Inland Empire dispatch point.
- Adelanto North
- Central Adelanto
- South Adelanto
- East Adelanto (near Chamberlaine Way)
- West Adelanto (near Koala Road)
Service Area – Cities Near Adelanto
Fielding ADU Builders serves the entire High Desert and Inland Empire region. Along with Adelanto, we regularly build ADUs and room additions in Victorville, CA, Apple Valley, CA, Hesperia, CA, and Phelan, CA. If you’re in one of these nearby cities, the same written-price guarantee and one-year workmanship warranty applies.
Serving Adelanto, CA - Our Local Coverage Area
We’re based in the Adelanto 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 Adelanto
For most Adelanto jobs, we can have plans drawn and submitted to the city within two to three weeks of a signed agreement. Permit review times at the city vary seasonally, but a typical detached ADU takes four to six weeks to go through plan check. Call (361) 315-4177 to get your project on the schedule.
Yes. Every project we build in Adelanto is permitted, inspected, and closed out with the city. The permit fees are listed as a line item in the written price you get before any work starts. We don’t build unpermitted additions or conversions, and we won’t ask you to.
No. The written price we hand you before construction is the price you pay. The only exception is a change order that you request in writing. The Garrison Standard means a fixed number on day one and the same number on the final invoice. Call (361) 315-4177 for a free estimate on your Adelanto project.
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 Adelanto Customers Say
"Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L."Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J."Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B.
