A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Quartz Hill, CA
Quartz Hill homeowners ask us one question more than any other: what does an ADU or home addition actually cost here, in writing, before the first crew arrives? The short answer is that an accessory dwelling unit in Quartz Hill typically runs $180,000 to $420,000 for a site-built project, while a prefab ADU from a brand like Cover or Dvele starts around $150,000 and can exceed $400,000 depending on size, site access, and finishes. We put that number on paper before any work begins, because that’s how Benson ADU Builders operates. Call (903) 568-7222 and you’ll get a written price, not a verbal ballpark that changes later.
Why Quartz Hill Homes Are Different
Quartz Hill sits in the Antelope Valley, where summers routinely pass 100 degrees and winter nights can dip below freezing. That temperature swing shapes every ADU and addition we build here. Insulation requirements get real, HVAC sizing matters more than in coastal Los Angeles, and roofing materials need to handle intense UV exposure year after year. Homes here tend to be larger-lot ranch properties, many built between the 1960s and 1990s, which means foundation assessments, septic considerations, and utility runs often play a bigger role than they would on a tight urban infill lot.
Setbacks, the distance a structure must sit from property lines, are generally more forgiving on Quartz Hill’s spacious parcels, but Los Angeles County permitting still applies, and that process rewards a builder who knows the paperwork. We handle the permit path for you, including any HOA review if your neighborhood has one. The terrain is mostly flat desert highland, which simplifies grading and concrete work compared to hillside builds in other parts of the county.
Our Main Quartz Hill Services
Most Quartz Hill homeowners contact us for one of three projects, and each has its own dedicated page with local detail. Here’s the quick view of what we handle.
ADU Builders in Quartz Hill
An accessory dwelling unit, what most people call a granny flat or backyard home, is a self-contained secondary residence on your existing lot. In Quartz Hill, ADUs are popular for multigenerational housing and rental income, and the large lot sizes give you real flexibility on placement and size. We build both site-built ADUs and prefab ADUs from brands like Cover, Dvele, and Boxabl, which often cut construction time significantly. Our team handles everything from pad grading to final utility connections. Learn more on the ADU Builders in Quartz Hill page.
Home Addition Contractor in Quartz Hill
A home addition extends your existing footprint, whether that’s a new primary suite, a larger kitchen, or a family room built onto the back of the house. Quartz Hill’s ranch homes often have generous side and rear yards, so additions here tend to be wide and single-story, which keeps foundation work straightforward. We coordinate the structural engineering, roof tie-ins, and county inspections so the new space feels like it was always there. See more on the Home Addition Contractor in Quartz Hill page.
Room Addition Contractor in Quartz Hill
A room addition is a single defined space, like an extra bedroom, a home office, or a dedicated laundry room. In Quartz Hill, room additions usually attach to the main house and share the existing roof line, though some homeowners prefer a detached structure. We quote the job with a fixed written price, handle any electrical or plumbing changes, and finish with the same 365-Day Done Right Promise that covers every Benson project. Details are on the Room Addition Contractor in Quartz Hill 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 Quartz Hill
We’re authorized to build with leading prefab and materials brands including Cover, Dvele, Mighty Buildings, and Boxabl. Panels and components are sourced directly from each manufacturer, which keeps lead times predictable even on Quartz Hill schedules. See our brands for the full line.
Pricing for ADU Company in Quartz Hill, CA
Here’s what Quartz Hill homeowners can expect for common project types. These ranges reflect local site conditions, including larger lots, septic considerations where applicable, and the Antelope Valley’s climate requirements.
| Service | Typical range in Quartz Hill |
|---|---|
| Prefab ADU (1 bed, 1 bath) | $150,000 – $220,000 |
| Prefab ADU (2 bed, 2 bath) | $250,000 – $350,000 |
| Custom site-built ADU (studio) | $180,000 – $250,000 |
| Custom site-built ADU (1 bed, 1 bath) | $220,000 – $320,000 |
| Custom site-built ADU (2 bed, 2 bath) | $280,000 – $420,000 |
| Home addition (primary suite) | $120,000 – $200,000 |
| Home addition (kitchen expansion) | $90,000 – $180,000 |
| Home addition (family room) | $100,000 – $250,000 |
| Room addition (single bedroom) | $60,000 – $120,000 |
| Room addition (home office) | $40,000 – $90,000 |
| Room addition (laundry or mudroom) | $35,000 – $70,000 |
What pushes a Quartz Hill project toward the upper end? Site access, septic system upgrades when the county requires them, and any custom cabinetry or higher-end finishes. Whatever the scope, you get one written price before work starts. No change orders later, no surprise line items at the door.
Neighborhoods We Serve in Quartz Hill
Our crews work throughout Quartz Hill and the surrounding Antelope Valley communities. If you’re on a larger ranch parcel or in a newer subdivision, we can usually schedule an estimate within a few business days.
- Quartz Hill proper
- West Quartz Hill
- Antelope Acres
- Leona Valley
- North Lancaster border area
Service Area – Cities Near Quartz Hill
While this page focuses on Quartz Hill, Benson ADU Builders also serves nearby cities across Los Angeles County and beyond. If you’re in Los Angeles, CA, Long Beach, CA, Anaheim, CA, or Riverside, CA, the same written-price guarantee and 365-Day Done Right Promise apply.
Serving Quartz Hill, CA - Our Local Coverage Area
We’re based in the Quartz Hill 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 Quartz Hill
We typically schedule consultations within a few business days across Quartz Hill. The consultation is free, and you receive a written price for your specific project. Call (903) 568-7222 to book a time that works for you. You’ll talk to a live person, not a voicemail tree.
Yes. Every ADU, home addition, and room addition we build goes through the proper Los Angeles County permitting process. We prepare the plans, submit the paperwork, and coordinate inspections. The 365-Day Done Right Promise covers the completed work, and any permit question gets answered in writing.
In many cases, yes. Quartz Hill has a mix of sewer-connected and septic properties. We evaluate the existing system during consultation, and if a septic upgrade is required for the new square footage, we’ll include that in your written price upfront. You won’t get hit with that cost later. Call (903) 568-7222 with your property details.
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 Quartz Hill Customers Say
"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."
- Hannah W."Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."
- Hope C."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N.
