A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Chino Hills, CA
Chino Hills ADU jobs come with a set of local realities that change how we plan, price, and build. Hillside lots, expansive clay soil, and a housing stock split between 1990s tracts and newer master-planned neighborhoods mean no two sites are the same. Before we recommend an ADU, home addition, or room addition, we walk the property, check the grade, and price the job in writing. That’s how Benson ADU Builders works in Chino Hills – a written price before any work starts, backed by our 365-Day Done Right Promise. Call (903) 568-7222 for a free estimate.
Why Chino Hills Homes Are Different
Chino Hills is not flat. Large portions of the city sit on rolling terrain shaped by the Chino Hills range, and that grade affects everything from foundation type to drainage design. A backyard ADU on a downslope lot in Butterfly Canyon or along Carbon Canyon Road often needs stepped footings or a retaining wall, which changes the site work line item before framing even starts. We plan for that from day one, not mid-project.
The climate matters too. Chino Hills summers regularly push into the high 90s, and the Santa Ana winds move through in the fall. That kind of heat cycling is tough on stucco, siding, and roofing. We build with materials that hold up – James Hardie cladding is a frequent recommendation here because it handles the dry heat and wind without warping or cracking. The goal is a structure that looks sharp in year one and year fifteen.
Housing stock across Chino Hills runs from 1970s-era ranch homes near Rincon and Los Serranos to the newer neighborhoods around Payne Ranch and Vila Borba. Older post-and-beam framing, slab-on-grade foundations at slightly different depths, and decades of add-on storage rooms all show up in this city. A Chino Hills home addition has to work with what’s already there, and we account for that in the written scope before anything gets torn out.
Our Main Chino Hills Services
Most Chino Hills homeowners call Benson for one of three projects: a detached ADU in the backyard, a larger home addition that expands the primary house, or a targeted room addition that solves one specific space problem. Each has its own Chino Hills page with deeper pricing and process details.
ADU Builders in Chino Hills
Backyard ADUs in Chino Hills usually mean a detached unit with its own kitchen, bath, and separate entrance – often for aging parents, adult kids, or rental income. Hillside setbacks and minimum rear-yard clearances are the two factors that most often shape the footprint here. We build with prefab options including Abodu, Dvele, and Boxabl, which can reduce on-site framing time compared to a fully site-built unit. If you’re exploring an ADU on your Chino Hills lot, start with our ADU Builders in Chino Hills page.
Home Addition Contractor in Chino Hills
A home addition expands the main house’s footprint – think a new family room, a main-floor primary suite, or a larger kitchen that bumps out into the side yard. Chino Hills lot shapes, especially in hillside communities, mean we’re often working with irregular property lines and limited access for equipment. We coordinate the structural engineering, foundation work, and utility connections as one written scope. For specifics on planning a larger addition here, see our Home Addition Contractor in Chino Hills page.
Room Addition Contractor in Chino Hills
A room addition is the most focused way to gain space – one new bedroom, a home office, a second bathroom, or a converted garage bay turned into living space. Because Chino Hills homes range from 1970s slab construction to 2000s builds, we inspect the existing foundation and roofline before committing to a price. Smaller projects still get the same written quote and 365-Day Done Right Promise as a full ADU. Details live on our Room Addition Contractor in Chino Hills 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 Chino Hills
Benson ADU Builders is authorized to build with Cover, Dvele, and Boxabl, and we stock common components locally so Chino Hills projects don’t stall waiting on parts. Our brands page shows exactly what each prefab system offers, side by side, so you can research before you commit.
Pricing for ADU Company in Chino Hills, CA
| Service | Typical range in Chino Hills |
|---|---|
| Detached ADU (prefab, 1 bed / 1 bath) | $180,000 – $280,000 |
| Detached ADU (site-built, 2 bed / 1 bath) | $230,000 – $350,000 |
| Garage conversion ADU | $120,000 – $200,000 |
| JADU (attached junior unit) | $90,000 – $150,000 |
| Home addition (primary suite, 400 – 600 sq ft) | $160,000 – $280,000 |
| Home addition (family room bump-out) | $110,000 – $200,000 |
| Second-story addition (partial) | $250,000 – $400,000 |
| Room addition (single bedroom, 150 – 250 sq ft) | $70,000 – $130,000 |
| Room addition (home office, 100 – 180 sq ft) | $50,000 – $95,000 |
| Room addition (bathroom, 50 – 100 sq ft) | $45,000 – $85,000 |
Chino Hills pricing runs higher than flatland cities when the site needs retaining walls, stepped foundations, or extra grading on a hillside lot. Every Benson quote is a written price before work starts – no verbal ballpark that drifts upward later.
Neighborhoods We Serve in Chino Hills
We work across the whole city. Hillside lots need more site prep; newer tracts usually have cleaner utility access. Here are a few of the Chino Hills neighborhoods we’re in most weeks:
- Butterfly Canyon
- Los Serranos
- Payne Ranch
- Vila Borba
- Rincon
For most Chino Hills neighborhoods, we can have a project planner on site within three to five business days of your first call.
Service Area – Cities Near Chino Hills
Benson ADU Builders serves Chino Hills daily, and we also take projects in nearby cities across the area. If you’re just over the city line, we can help in Pomona, CA, Diamond Bar, CA, Chino, CA, and Montclair, CA. Each city has its own local pricing and permit realities, but the written-price promise is the same everywhere we work.
Serving Chino Hills, CA - Our Local Coverage Area
We’re based in the Chino Hills 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 Chino Hills
After our first site visit, we typically deliver a written price within a week. Actual groundbreaking depends on your lot’s engineering requirements, HOA review if one applies, and the city’s plan-check queue – which we can’t rush and won’t promise to. Call (903) 568-7222 for a free estimate and we’ll walk you through timing for your specific property.
Some Chino Hills neighborhoods have active HOAs with architectural review, especially newer master-planned communities. We handle the paperwork and drawings they require. HOAs cannot legally block a state-compliant ADU, but they can slow approvals, so we factor that into the schedule from the start.
Yes. Every Benson project in Chino Hills is permitted through the city, inspected on schedule, and closed out cleanly. You get documentation of the final sign-off, not an unpermitted build that becomes a headache when you sell. Call (903) 568-7222 for a free estimate and a full written scope that includes the permit path.
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 Chino Hills 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.
