







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Apple Valley, CA
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions in Apple Valley, CA. We are the ADU and addition arm of Garrison Partners, which has built to a written standard since 2006. Apple Valley jobs come with a few local realities: large lots, a dry high-desert climate, and a permitting department that expects plans to be right the first time. We put the price in writing before any work starts, and every project carries a one-year written guarantee. Call (361) 315-4177 for a free estimate.
Why Apple Valley Homes Are Different

Apple Valley sits in the Victor Valley at roughly 3,000 feet, which means real temperature swings: hot summers, freezing winter nights. That drives two things on ADU and addition work. First, insulation and HVAC sizing have to account for both ends of the scale, not just the heat. Second, stucco and slab foundations expand and contract, so we pay close attention to where new framing meets old. A lot of Apple Valley homes were built between the 1950s and 1980s, and many still have their original electrical panels. Adding a dwelling unit usually means a panel upgrade, and that gets reviewed by the Town of Apple Valley’s building division.
Lots here are larger than what you find down the hill. A standard Apple Valley parcel often runs 7,200 square feet or more, and many are much bigger. That gives real options for a detached ADU in the rear yard, but it also means every project starts with a close look at setbacks, utility runs, and where the sewer line sits. Some neighborhoods, like the area around Jess Ranch and parts of Apple Valley Ranchos, have HOAs with their own architectural review on top of town permitting.
Our Main Apple Valley Services
Apple Valley homeowners most often call us for room additions, garage conversions, and new ADUs. Each service has its own Apple Valley page with local detail and pricing, linked below.
Room Addition Contractor in Apple Valley
A room addition in Apple Valley usually means extending an existing slab or pouring a new foundation and tying it into the roofline of the original house. Wind is a real factor here; Apple Valley sits in a high-desert wind corridor, so the connection between old framing and new gets engineered and inspected carefully. Most additions run from a permitted master bedroom and bath to a family room extension that picks up afternoon shade. We price every job in writing before work starts. See Room Addition Contractor in Apple Valley for local costs and details.

Garage Conversion Contractor in Apple Valley
Converting an attached or detached garage in Apple Valley means bringing an unconditioned space up to code: insulation in the walls and attic, drywall, a mini-split or a tie-in to the existing HVAC, and usually a new slab pour if the existing garage floor has settled or cracked. Many Apple Valley garages were built with unpermitted storage lofts, and the town wants those addressed when the space converts to living area. Permitting goes through the Town of Apple Valley. Garage Conversion Contractor in Apple Valley has the full breakdown.

ADU Builders in Apple Valley
Backyard ADUs in Apple Valley tend to be detached units between 400 and 1,200 square feet, and the larger lots here make siting them straightforward in most cases. We build conventional stick-frame ADUs, and we also work with prefab platforms like Abodu, Cover, and Dvele when the goal is a shorter construction timeline. Every ADU we build is permitted, inspected, and covered by the one-year Garrison Standard guarantee. Read the full Apple Valley ADU page here: ADU Builders in Apple Valley.

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 Apple Valley
We install and finish prefab ADUs from Abodu, Cover, Dvele, and Mighty Buildings, and we also build conventional units with James Hardie siding. The prefab route can cut site time meaningfully, which matters in Apple Valley where the weather can shift fast between spring and summer. See our brands for the full list.
Pricing for ADU Company in Apple Valley, CA
| Service | Typical range in Apple Valley |
|---|---|
| Detached ADU (400 – 750 sq ft, conventional build) | $180,000 – $280,000 |
| Detached ADU (400 – 750 sq ft, prefab platform) | $150,000 – $220,000 |
| Detached ADU (750 – 1,200 sq ft, conventional build) | $280,000 – $420,000 |
| Detached ADU (750 – 1,200 sq ft, prefab platform) | $220,000 – $340,000 |
| Garage conversion to ADU (attached, 400 – 600 sq ft) | $90,000 – $150,000 |
| Garage conversion to ADU (detached, 400 – 600 sq ft) | $110,000 – $170,000 |
| Room addition (300 – 500 sq ft) | $90,000 – $150,000 |
| Room addition (500 – 800 sq ft) | $150,000 – $240,000 |
| Electrical panel upgrade (common prerequisite) | $3,500 – $6,500 |
What pushes a number up in Apple Valley: sewer line relocation, long utility runs from a rear-lot ADU, HOA review delays, and panel upgrades on older homes. Every price above is a planning range, not a bid. Your written quote is the number you approve before we start, and it is the number on the final invoice.
Neighborhoods We Serve in Apple Valley

We run jobs all across Apple Valley, from the older streets near Highway 18 to the newer tracts along Bear Valley Road and Apple Valley Road. Our dispatch is coordinated from the brand’s Inland Empire office, with crews serving Apple Valley locally on a scheduled rotation.
- Apple Valley Ranchos
- Jess Ranch
- Desert Knolls
- Yucca Loma
- Sycamore Rocks
Response time for a free estimate in Apple Valley typically runs one to two weeks depending on the season; spring and fall are the busiest for permitting reviews in the Victor Valley.
Service Area – Cities Near Apple Valley
Fielding ADU Builders also serves the surrounding Victor Valley and San Bernardino mountain communities. We regularly work in Hesperia, CA, Victorville, CA, Adelanto, CA, and as far up as Lake Arrowhead, CA. If you are in Apple Valley or a neighboring city, call (361) 315-4177 and a live person will answer.
Serving Apple Valley, CA - Our Local Coverage Area
We’re based in the Apple Valley 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 Apple Valley

Plan review in Apple Valley typically runs four to eight weeks for a standard ADU or addition, provided the drawings are complete and no variances are required. HOA architectural review, if your neighborhood has one, can add two to four more weeks. We submit plans with the details the town looks for the first time.
Some Apple Valley HOAs, including parts of Apple Valley Ranchos and Jess Ranch, require their own architectural approval before the town permit is issued. That review usually covers setback lines, exterior finish, and whether the ADU can be rented separately. We check your HOA’s covenants as part of the estimate so nothing surprises you mid-project.
No. The written price you approve before we begin is the number on the final invoice. If Apple Valley’s building department requires an unplanned change, we price the change order in writing before performing the work, and you approve it first. Call (361) 315-4177 to schedule a free estimate and get your written price.
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 Apple Valley Customers Say
"Solid job. Cabinet delivery was a week behind but they worked around it."
- Ben G."Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W.



