A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Upland, CA
Benson ADU Builders handles accessory dwelling units, home additions, and room additions across Upland, CA. Most Upland lots we walk were platted between the 1950s and 1980s, which means setback rules, easement lines, and utility paths vary block to block. That variance is exactly why we put every price in writing before the first shovel turns. Whether you’re adding a rental unit off Foothill Boulevard or expanding a primary home near the Euclid Avenue corridor, call (903) 568-7222 and we’ll start with a straight answer about what your specific property allows.
Why Upland Homes Are Different
Upland straddles two geographies. The north end climbs toward the San Gabriel foothills, where lots slope, drainage runs fast in winter, and foundation work has to account for decomposed granite and rock. The south and west sides flatten out toward the Ontario border, on older alluvial soil that usually grades well but still shifts with wet winters and dry summers. Neither zone builds the same way, and a one-size-fits-all plan fails in one of them.
Housing stock runs from 1950s ranch homes near the historic downtown core to larger 1980s and 1990s builds east of San Antonio Avenue and north into the Colonies area. The older homes often have service panels that predate current ADU load requirements, and a fair number of north Upland properties sit inside hillside or wildfire-adjacent zones where the city asks for defensible space and specific cladding choices. James Hardie fiber cement, for example, meets the fire-resistant cladding expectations up there while holding up better than wood trim in dry heat. We also see HOAs in pockets of north and northwest Upland, and HOA architectural review adds steps to any ADU or addition. None of it is a mystery; it just has to be planned before the price gets locked.
Our Main Upland Services
The three jobs Upland homeowners ask about most are building an ADU, adding square footage to the main house, and converting or extending a single room. Each one has its own dedicated Upland page with local pricing and specifics, linked below.
ADU Builders in Upland
An ADU in Upland means a detached unit, a garage conversion, or sometimes a JADU carved out of existing square footage. The city’s setback and lot-coverage rules sit on top of school-district and utility constraints, and the difference between a prefab panel system like Abodu or Dvele and a site-built frame changes the permit path and the total. We walk you through both options with real numbers before you commit. See ADU Builders in Upland for the full breakdown.
Home Addition Contractor in Upland
Adding a primary suite, a second family room, or a kitchen extension in Upland usually means tying a new foundation into an existing slab or raised floor and matching rooflines on 40-to-60-year-old framing. Where the lot drains and where the existing sewer lateral runs can shape the whole design. We price it in writing and show you what’s structurally optional versus what the city requires. Details are on the Home Addition Contractor in Upland page.
Room Addition Contractor in Upland
A single room addition, like a home office or a fourth bedroom, often fits within Upland’s infill rules but still triggers foundation, electrical, and roof-tie requirements. Bedroom additions also raise the question of egress windows, and some north-side slopes add retaining-wall scope. This is the kind of job where a written line-item price protects you from surprises at rough-in. Read more at Room Addition Contractor in Upland.
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 Upland
Benson ADU Builders is authorized to build with Abodu, Cover, Dvele, and Mighty Buildings, among others. Because we run these systems regularly, we can talk turnaround, panel lead times, and which brand fits a given Upland lot before you spend a dollar. Browse our brands to compare what each system offers.
Pricing for ADU Company in Upland, CA
Here are the ranges we typically see for Upland projects. These are planning numbers, not quotes, because your lot and existing structure set the final figure.
| Service | Typical range in Upland |
|---|---|
| Detached ADU (prefab, 1-bed) | $160,000 – $240,000 |
| Detached ADU (site-built, 2-bed) | $220,000 – $340,000 |
| Garage conversion ADU | $100,000 – $170,000 |
| JADU (interior conversion) | $70,000 – $120,000 |
| Primary suite addition | $120,000 – $210,000 |
| Kitchen extension | $90,000 – $180,000 |
| Single room addition | $60,000 – $110,000 |
| Electrical panel upgrade (as part of project) | $3,500 – $6,000 |
| Foundation work (where required) | $12,000 – $35,000 |
| Permit and plan fees (est.) | $4,000 – $12,000 |
What pushes a Upland price up is usually one of three things: hillside foundation work, a 60-amp electrical service that needs upgrading to handle the new load, or an HOA review that lengthens the schedule and adds administrative hours. That is exactly why we hand you a written price before any work starts, so none of those variables become a surprise at the invoice.
Neighborhoods We Serve in Upland
We take jobs across all of Upland, from the older grid near downtown to the newer subdivisions up north and east. Because our scheduling runs out of the Inland Empire office, response times stay consistent across the whole city.
- Upland Historic Downtown
- The Colonies
- North Upland (San Antonio Heights area)
- Northwest Upland (Pepper Tree and surrounding)
- South of Foothill near the Ontario border
Service Area – Cities Near Upland
In addition to Upland, we take calls from homeowners in neighboring Inland Empire cities. If you’re a few minutes away, the same written-price process applies. See our pages for Rancho Cucamonga, CA, Claremont, CA, Montclair, CA, and Ontario, CA for local specifics.
Serving Upland, CA - Our Local Coverage Area
We’re based in the Upland 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 Upland
We schedule Upland site visits on a rolling basis through our Inland Empire office, which keeps travel time short and arrival windows realistic. Most initial walkthroughs can be scheduled within a few business days. The exact date depends on how many projects are already in motion in Upland that week, and we confirm a live arrival time before we pull up.
If your Upland property sits in an HOA, yes, you’ll typically need architectural review on top of the city permit. We handle the plans in a format HOAs expect, which saves back-and-forth. Not every Upland neighborhood has an HOA, and we’ll tell you in the first conversation whether you’re in one.
It covers the entire scope we agree on, in line-item detail, before any work starts. Every Benson ADU Builders project includes The Relay Visibility Guarantee: a written price, real-time tracking, and a 365-Day Done Right Promise. If something isn’t right within a full year, we make it right, in writing. Call (903) 568-7222 to schedule a free estimate for your Upland 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 Upland 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.
