Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across San Antonio Heights
Hiring a General Contractor in San Antonio Heights means finding someone who understands unincorporated foothill rules, hillside setbacks, and county permitting, not just someone who can swing a hammer. We’ve pulled permits through San Bernardino County for additions, ADUs, and detached shops on sloping lots all over the 91784 zip code. If you’re planning a kitchen remodel, a room addition, or a full acreage build-out, call us at (855) 901-7266 and we’ll walk the property with you before you commit to anything.
Why San Mateo Construction Is San Antonio Heights’s Preferred General Contractor Company
San Antonio Heights homeowners keep calling us back because we scope the job for what the county actually requires, not what a flatland contractor assumes it will need. Our General Contractor in San Antonio Heights work routinely involves grading reviews, drainage plans, and fire-hardening details that most remodelers never touch. Noel Carrington leads every project from first walkthrough to final inspection, and he’s the same person you’ll talk to when a question comes up mid-build.
We don’t send a salesperson to quote and then disappear. The crew that shows up knows the difference between a leach field setback in San Antonio Heights and a sewer tap in Upland. That local knowledge saves you weeks of rework. Material runs up Euclid Avenue or through the canyon roads take longer here, so we build that time into the schedule honestly instead of promising dates we can’t keep.
Styles & brands we work with
Residential General Contractor in San Antonio Heights
Residential General Contractor work in San Antonio Heights covers everything from a single bathroom gut to a whole-home addition that ties into a 1960s ranch foundation on a 20 percent slope. Most projects here start between $45,000 and $130,000 for a home addition, while a full kitchen remodel runs $14,000 to $45,000 depending on whether you’re keeping the existing footprint or moving plumbing and load-bearing walls. The county review layer adds time, but we handle that paperwork from day one.
Hillside Additions and Structural Work
Adding square footage on a sloping San Antonio Heights lot isn’t the same as adding onto a flat tract home in Rancho Cucamonga. We evaluate the pad, check where the natural drainage crosses the foundation line, and scope the retaining walls before we quote. That prevents the change order nobody wants in February when the rains hit.
Acreage Shops, Outbuildings, and ADUs
Detached structures on acreage lots trigger their own set of rules. Septic setbacks, well clearances, and fire-department access roads all shape where a garage conversion or ADU can sit. ADU Construction in San Antonio Heights typically lands between $90,000 and $220,000, and we design around the county health department’s requirements from the first sketch.
Hire a General Contractor in San Antonio Heights
When you hire a General Contractor here, you’re hiring someone to manage the county, the subs, the material haul, and the schedule all at once. A garage conversion in San Antonio Heights runs $30,000 to $80,000, and a paver driveway for one of the larger lots typically costs $7,000 to $18,000. The contractor you choose should know which of those jobs need a grading permit before the first truck shows up. We do.
Single-Source Scope, County-Ready Paperwork
We pull building permits through San Bernardino County and coordinate the geotechnical and septic reviews that flatland contractors in Upland or Montclair rarely deal with. That means one team handles the roofline, the foundation, the finishes, and the inspection schedule. No finger-pointing between a framer, an electrician, and a county reviewer.
Material Access and Equipment Logistics
Concrete trucks and excavators can’t always reach the back of a San Antonio Heights lot. We plan for pump trucks, temporary road base, and staged material drops before we commit to a start date. That planning is part of the estimate, not an afterthought once the project is already three weeks behind.
Trusted Brands We Service in San Antonio Heights
We install and coordinate a curated set of brands we’ve actually worked with, not whatever the supply house has in stock. For San Antonio Heights window replacement, we often spec Therma-Tru doors and ECO Window Systems or ViewLux windows, especially where Chapter 7A fire-hardening requirements push toward impact-rated and ember-resistant products. We keep local access to these lines for faster turnaround on reorders and warranty parts, which matters when a project sits on a hill and a second trip up the canyon eats half a day.
See the difference
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After
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AfterCommon General Contractor Problems We See in San Antonio Heights Homes
- Wrong jurisdiction filings. Homeowners or out-of-area contractors assume San Antonio Heights falls under the City of Upland and submit plans to the wrong counter. The project stalls before a single stake goes in the ground. We file through San Bernardino County from the start.
- Septic and well setbacks ignored. A detached ADU or shop placed too close to a leach field or well triggers a county health department redesign. That relocation can add thousands in earthwork and delay the permit by six to eight weeks.
- Concrete and equipment access on private drives. Narrow, unpaved drives with no turnaround space can’t take a full concrete truck. Without a pump truck or temporary road base in the plan, pours get delayed and the concrete order gets wasted.
- Grading quoted without drainage. A hillside foundation cut that ignores the lot’s natural water flow causes runoff across the new slab during winter rains. Then the homeowner gets hit with a change order for retaining walls and French drains after the concrete is already poured.
Pricing for General Contractor in San Antonio Heights, CA
Here’s what we’re currently quoting for work in San Antonio Heights. These are real ranges based on acreage lots, county permitting, and the material and access conditions we see in 91784:
| Project | San Antonio Heights Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
| Roof Replacement | $8,000 – $20,000 |
Hillside grading, septic setbacks, and fire-hardening upgrades shift these numbers. We price the site-specific work before we quote, so the number you get is the number you build to. Call (855) 901-7266 and we’ll come out, walk the lot, and put a written line-item estimate in your hands.
We Also Serve Cities Near San Antonio Heights
While this page covers San Antonio Heights and the 91784 zip code, our crews also work regularly in Upland, Claremont, Rancho Cucamonga, and Montclair. If your project sits near the boundary or you need a contractor who can handle both county and city permitting on adjacent properties, call us and we’ll sort out which jurisdiction applies.
Serving San Antonio Heights, CA — Our Local Coverage Area
We’re based in the San Antonio Heights 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 General Contractor in San Antonio Heights
Yes. San Antonio Heights is unincorporated, so any detached shop, ADU, garage conversion, or addition goes through San Bernardino County Land Use Services, not the City of Upland. We prepare the site plan, handle the submittal, and track the review so you don’t have to guess which counter to call. Call (855) 901-7266 and we’ll confirm the exact permit path for your lot.
We price it by walking the slope first. A lot with an 18 percent grade typically needs a stepped foundation, a drainage swale, and sometimes a short retaining wall, all of which get baked into the quote before you sign. We don’t bid a flatland number and hope for the best. Call us and we’ll give you a written estimate that reflects the actual grade on your property.
Most of San Antonio Heights sits in a high fire severity zone, so roofing, siding, decking, and windows on any new or replaced structure must meet Chapter 7A wildfire construction standards. That means Class A roofing, ember-resistant vents, and ignition-resistant siding on exterior walls. We spec materials to that code from the first material order, not as a retrofit after the inspector flags it.
You can build an ADU on a lot with a septic system or well, but the structure has to respect the county health department’s setback distances from the leach field and the wellhead. We pull the septic and well records during the feasibility phase and adjust the ADU placement before drawings go to the county. Call (855) 901-7266 for a site review.
We stage them. For long or steep private drives, we usually spec a pump truck for concrete, schedule smaller delivery vehicles for framing and finish materials, and sometimes lay a temporary road base at the driveway entry so trucks can turn around. That’s part of the plan from the start, not a surprise once the project is underway. Call us and we’ll explain how we’d handle your specific driveway.
Written by Noel Carrington, Owner at San Mateo Construction, serving San Antonio Heights since our first county-permitted hillside addition.