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
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions in Upland, CA. Most of the homes we walk here were built between the 1950s and 1980s, and a lot of them sit on lots that look flat from the street but slope noticeably once you get past the back door. That combination – older framing, steeper rear yards, and a city permit counter that asks real questions about setbacks and drainage – is exactly what shapes an Upland job. If you’re trying to figure out what an ADU or addition will actually cost here, call (361) 315-4177 and we’ll put a number in writing.
Why Upland Homes Are Different
Upland sits at the base of the San Gabriel Mountains, and the foothill terrain shows up in almost every project we price. Homes north of Foothill Boulevard, up toward San Antonio Heights, often have rear yards that drop several feet from the house to the back fence. That slope changes how you handle foundation work, drainage, and retaining walls on an ADU or room addition – it’s not a flat-lot build, and the permit drawings have to prove the water goes somewhere sensible. Homes south of the 210, down into the flatter grid around 8th Street and Euclid Avenue, tend to be easier ground but older stock. We see a lot of 1960s and 1970s ranch-style houses with slab foundations that have moved over the years, and any addition has to tie into whatever that slab is actually doing today.
Upland’s housing stock also includes a meaningful number of two-story homes and some split-levels, particularly east of Euclid. A garage conversion on a split-level is a different job than a garage conversion on a ranch. The garage floor may sit below the main floor, which means stairs, landing space, and sometimes a step-down entry that has to make sense inside the finished room. None of this is exotic to a builder who has worked the area, but it does mean the online price you see for a “typical” garage conversion in California won’t match your house. Upland yards, Upland slopes, and Upland’s particular building stock set the real number.
Our Main Upland Services
Three jobs account for nearly every call we take from Upland homeowners. Each has its own page with local pricing details and the Upland-specific conditions that affect the work.
Room Addition Contractor in Upland
Room additions in Upland usually mean building out into a rear yard that slopes more than the homeowner expects. We handle the grading and drainage as part of the addition, not as a surprise change order. Upland’s permit office wants to see the foundation detail on any addition that extends beyond the original footprint, especially on hillside lots north of Foothill. We price the plans, the permits, and the build as one written number. Read the full Upland breakdown on our Room Addition Contractor in Upland page.
Garage Conversion Contractor in Upland
A garage conversion in Upland often starts with a question about whether the city will let you keep the driveway or require additional off-street parking. That answer depends on your zone and your lot, and it’s one of the first things we check. Many Upland garages are attached, which makes them good candidates for conversion into a primary suite or an in-law unit with its own entrance. The concrete slab under the garage door opening usually needs infill framing, and we include that in the written price, not as an add-on later. Details are on the Garage Conversion Contractor in Upland page.
ADU Builders in Upland
Backyard ADUs in Upland have to respect the same slope and setback realities as the rest of the property. Some lots north of Foothill Boulevard need a setback variance, which is just the city’s written permission to build closer to a property line than the standard rule allows. We pull that paperwork as part of the job. We also work with prefab platforms like Abodu and Cover when the lot and access allow a modular build, which can shorten on-site time considerably. See the full picture on the ADU Builders in Upland 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 Upland
We install and finish ADUs and additions built on platforms from Abodu, Cover, Dvele, and Mighty Buildings, alongside conventional builds with James Hardie siding and Tuff Shed-style structures. Upland’s permit office is familiar with most of these systems, which keeps plan check moving. See our brands for the full list and what each platform fits best.
Pricing for ADU Company in Upland, CA
| Service | Typical range in Upland |
|---|---|
| Garage conversion (attached, standard finish) | $70,000 – $110,000 |
| Garage conversion (detached, standard finish) | $85,000 – $130,000 |
| Backyard ADU (prefab, 400 – 600 sq ft) | $120,000 – $180,000 |
| Backyard ADU (conventional build, 600 – 800 sq ft) | $180,000 – $260,000 |
| Room addition (200 – 400 sq ft, ground level) | $90,000 – $160,000 |
| Room addition (400 – 600 sq ft, ground level) | $150,000 – $230,000 |
| Second-story addition (400 – 600 sq ft) | $200,000 – $300,000 |
| Foundation, drainage, and grading work (hillside lots) | $15,000 – $45,000 |
| Permit fees and plan check (varies by project) | $3,000 – $12,000 |
Sloped lots north of Foothill push the foundation and drainage line higher than a flat lot south of the 210. The main thing to know about our pricing is that the number you approve before work starts is the number on the final invoice – written price first, no change orders invented mid-job.
Neighborhoods We Serve in Upland
We work across Upland, from the older grid around downtown and 8th Street to the larger lots near San Antonio Heights and the newer subdivisions west of Euclid. Typically a call is answered the same day and we schedule the site visit within the week.
- San Antonio Heights
- North Upland (above Foothill Boulevard)
- Downtown Upland
- Euclid Avenue corridor
- West Upland (near the Claremont line)
Service Area – Cities Near Upland
Fielding ADU Builders serves Upland and the surrounding Inland Empire communities. Crews are dispatched locally from the brand’s Riverside-San Bernardino area office. We also work in Rancho Cucamonga, CA, Claremont, CA, Montclair, CA, and Ontario, CA.
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
A live person answers the phone 24/7 and Upland calls are scheduled within the same week, usually within a few days. The site visit is free. Call (361) 315-4177 and we’ll set a time that fits your schedule.
Yes. Upland requires building permits for ADUs, garage conversions, and room additions, and the city checks setbacks, parking, and drainage on every application. We pull the permits and handle the inspections as part of the job, and every project is done by the book with the permit board posted on site.
No. The price goes in writing before any work starts, and the number you approve on day one is the number on the final invoice. If an Upland site has a condition that could not be seen before we opened the wall or cut into the hillside, we talk through it and get your sign-off before any added work happens. Changes only happen with your approval, in writing, ahead of the extra work.
Call (361) 315-4177 to schedule a free estimate in Upland. We’ll walk the site, give you a written price, and explain exactly what the city will want before anything is built.
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
"Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B."Honest feedback on what the lot could fit. Told me up front what would fit on the lot and what the setbacks would allow."
- Rita C."Clear price breakdown. Change orders were all in writing."
- Hal P.
