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
Upland runs two very different ADU markets at once: big lots north of Foothill Boulevard with room for a detached unit and mountain views, and older, tighter lots downtown where a garage conversion or addition makes far more sense. The houses themselves span early Craftsman bungalows near Euclid, mid-century ranches across the central neighborhoods, and newer builds up toward San Antonio Heights. What that means for you: nobody should quote an Upland project without standing on the lot first. We do exactly that, and we put the written price in your hand before any work starts. Call (831) 292-4191 for a free estimate.
Why Upland Homes Are Different
Upland’s housing stock is about a century deep, and that shows up in every project we take on. Near downtown, you’ll find Craftsman and Spanish Revival homes from the 1920s and 1930s, many with detached garages opening onto rear alleys. Up north, the lots widen and the homes get newer – mid-century ranches, tract housing, and subdivisions built in the last twenty years with genuine room for a detached ADU.
The climate drives real decisions. Upland summers run hot and dry, so any ADU or addition needs cooling designed in from the start, not bolted on after. Winters come mild and damp, which matters less for framing and more for drainage and ventilation. And in the foothill-adjacent zones north of the 210, fire-resistant materials and defensible space are part of the conversation when we plan a detached unit. The historic downtown core adds its own layer: Upland’s preservation guidelines shape what you can do with a garage conversion or an addition on those older streets, which is exactly why a rear-alley garage conversion is the pattern you see on so many blocks north of Arrow Highway.
Our Main Upland Services
Most Upland homeowners we talk to are deciding between three paths: adding onto the house, converting what they already have, or building a separate unit from scratch. Here’s how each one works here.
Home Addition Contractor in Upland
A home addition in Upland usually means extending a single-story ranch or adding a second story on a lot that’s already tight. South of Foothill, setbacks and lot coverage rules shape how much you can add, and on older Craftsman homes the addition has to match roof lines and window patterns or the city’s preservation review gets involved. We pull permits, manage the inspection schedule, and keep the work tied to a written scope and price. Home Addition Contractor in Upland covers the details.
Garage Conversion Contractor in Upland
Garage conversions are the quiet workhorse of Upland’s ADU market, especially downtown and along the older streets north of Arrow Highway, where detached garages face the rear alley and conversion is often the only path to a new unit without touching the historic facade. The work usually involves foundation assessment, electrical and plumbing runs, insulation, drywall, and a new entry. Older garages here often need seismic upgrades before anything cosmetic happens. Garage Conversion Contractor in Upland walks through the process and what it costs.
ADU Builders in Upland
A detached ADU is the right answer on Upland’s larger northern lots, where setbacks allow a separate structure and the lot can absorb one. These units run from a compact one-bedroom studio to a two-bedroom with its own laundry and kitchen. We’ve worked with prefab manufacturers including Abodu, Cover, and Dvele, and we match the right system to your lot shape, soil, and budget rather than pushing one brand on every site. ADU Builders in Upland has the full breakdown.
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
We install and service ADUs and additions built with Abodu, Cover, Dvele, and Mighty Buildings systems. Our crews know the panel connection details, foundation requirements, and finishing sequences for each. Most parts we need are stocked at our Inland Empire yard, so Upland projects rarely sit waiting on a shipment. See our brands page for the full list.
Pricing for ADU Company in Upland, CA
| Service | Typical range in Upland |
|---|---|
| Garage conversion (standard, finished) | $85,000 – $135,000 |
| Detached ADU (400 sq ft studio) | $120,000 – $170,000 |
| Detached ADU (800 sq ft, 2 bed / 1 bath) | $220,000 – $300,000 |
| Detached ADU (1,000+ sq ft, 2 bed / 2 bath) | $280,000 – $390,000 |
| Prefab ADU (turnkey, Abodu / Cover / Dvele) | $180,000 – $350,000 |
| Home addition (single room, 200 – 300 sq ft) | $60,000 – $110,000 |
| Home addition (primary suite w/ bath, 400 sq ft) | $110,000 – $180,000 |
| Kitchen or living room extension (250 – 400 sq ft) | $80,000 – $150,000 |
| Second-story addition (400 – 600 sq ft) | $180,000 – $280,000 |
What pushes prices up in Upland specifically: historic district review downtown, seismic retrofits on older garages, and fire-resistant materials in the foothill zones north of the 210. Every estimate we give is a written, line-item price before work begins – no change orders at the door.
Neighborhoods We Serve in Upland
We work across Upland, from the historic streets around downtown to the newer subdivisions up toward the foothills. Typical response time for an in-person estimate in Upland is within a few business days, depending on how many projects are already scheduled that week.
- Historic downtown and the alley-fed blocks north of Arrow Highway
- Central Upland, including the ranch and tract neighborhoods near Foothill
- North Upland up toward San Antonio Heights
- The neighborhoods east of Euclid near the Claremont border
- South Upland around the 10, including properties near the Ontario side
Service Area – Cities Near Upland
We serve Upland and the surrounding Inland Empire cities, coordinated from our Inland Empire office with crews based locally. If your property is in Montclair, CA, Ontario, CA, Fontana, CA, or Mira Loma, CA, we can send a crew your way under the same written-price guarantee.
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
Yes. Upland’s downtown historic district adds a preservation-review layer to garage conversions and additions, and we’ve worked through that process enough to know which details trigger delays and how to design around them up front.
Upland estimates are usually scheduled within a few business days of your call. We don’t quote an ADU, garage conversion, or addition without seeing the lot and the existing structure first. Call (831) 292-4191 to set a time.
No. The Kingswell Guarantee means a written price before any work begins, and that number doesn’t change unless you change the scope. If something isn’t right within 365 days, we come back and make it right. Call (831) 292-4191 for a free estimate.
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
"I was nervous about adding on but they walked me through every step and every cost before we started. No surprise change orders halfway through like I'd heard horror stories about."
- Eleanor Pratt"A whole backyard ADU from scratch. Terrified me going in, but they kept me updated weekly and there were no nasty surprises. Quality work and a fair price."
- Noreen Fletcher"Detached unit in the backyard for rental income. They handled design and permits and gave me a real schedule. Came in close to on time and exactly on the written price."
- Benjamin Stahl
