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 Home Remodeling Across San Antonio Heights
Home remodeling in San Antonio Heights runs $14,000 to $45,000 for a typical kitchen and $9,000 to $28,000 for a bathroom, but the real number depends on what’s hiding inside your walls. This unincorporated foothill community at the base of the San Gabriel Mountains has a housing stock full of mid-century ranch homes and custom hillside builds, and almost every one we open up reveals something the previous owner never told you about. We’re Square One Builders, a full-scope general contractor led by Brent Calloway, and we’ve spent years working these narrow private roads and sloped lots. Call (877) 688-9930 to schedule a free estimate.

Key Takeaways:
- San Antonio Heights remodels trigger brush-clearance and fire-zone code requirements that flat-city contractors often miss until the inspector red-tags the exterior.
- Pre-demolition inspections catch outdated wiring and failed waterproofing before they become rushed change orders.
- We write allowances and written change orders into every contract so surprise repairs never get priced without your approval.
- One contractor manages every system, from roofing to cabinetry to hardscaping, under one contract.
Why Square One Builders Is San Antonio Heights’s Preferred Home Remodeling Company
We know San Antonio Heights because we work here constantly, not because we looked at a map. The unincorporated status means no city building department breathing down your neck the way Upland has, but it also means San Bernardino County inspectors run the show, and they check fire-resistant detailing and brush-clearance zones closely. Our crew knows what passes inspection on Euclid, on the private drives off Almond Street, and up the steeper stretches near the foothill roads. That knowledge keeps permits moving.
Brent Calloway built Square One Builders on the idea that one accountable team should handle every phase of a remodel. When you call (877) 688-9930, you’re talking to a general contractor who coordinates structural work, roofing, plumbing fixtures, windows, cabinetry, and hardscaping under a single contract. No juggling three subs who blame each other when the schedule slips. No engineer who won’t return calls. We spec the right material for your project, from James Hardie siding to Cambria countertops, and we stand behind the work.
Homeowners in San Antonio Heights tell us the same thing on almost every job: they tried managing a remodel themselves once, and it ate six months of their life. We hear it on kitchen remodels near the 91784 zip code, on bathroom updates in the mid-century ranch clusters, on whole-home renovations along the hillside. Our approach is simple. Inspection first, written allowances for what we might find, and every surprise priced in writing before we touch it.
Styles & brands we work with







Full Home Remodel in San Antonio Heights
A Full Home Remodel in San Antonio Heights means something different than it does ten minutes downhill in Upland. Here, we’re usually working on a mid-century ranch or a custom hillside build on a sloped lot, and the remodel spans interior and exterior systems at once: kitchen, bathrooms, roofing, siding, windows, drainage. The job typically runs $45,000 to $130,000 for additions, with kitchen work at $14,000 to $45,000 and bathrooms at $9,000 to $28,000, depending on what we find when walls come open. San Antonio Heights homeowners choose this scope when they’d rather do one coordinated renovation than five separate projects over five years.
Permit-Triggered Code Upgrades
Opening up an older San Antonio Heights home triggers code upgrades the moment a permit is pulled. If we find outdated wiring, undersized framing, or failed waterproofing, the inspector will require correction before we can close the wall. We plan for this. Allowances are written into your contract, and any additional scope is priced and approved in writing before we proceed.
Hillside Foundation and Drainage Work
Sloped lots in San Antonio Heights often hide drainage problems behind the stucco. We inspect the foundation, subfloor, and retaining walls before demolition so a kitchen remodel doesn’t turn into an unplanned $20,000 structural repair with no warning. When we find issues, you get a written change order with the exact cost, and you decide before we dig.
Home Remodeling Contractor in San Antonio Heights
A Home Remodeling Contractor in San Antonio Heights has to be more than a project manager with a truck. This is fire-prone foothill terrain where narrow private drives limit delivery access and inspectors enforce brush-clearance and ember-resistant detailing that flat-city contractors never think about. Our role is simple: one contract, one accountable team, every system managed from the ground up. A typical whole-home remodel here runs $45,000 to $130,000 depending on scope, and smaller projects like a single bathroom or kitchen refresh start in the $9,000 to $20,000 range.
Inspection-First Planning
Before we give you a final number, we walk the property and open access points where we can see wiring, framing, and waterproofing. This is the single biggest reason a San Antonio Heights remodel quote moves. We catch the cloth-wrapped wiring and undersized beams before they become emergency change orders mid-demolition, and we write realistic allowances for what we expect to find.

Written Change Orders, No Verbal Surprises
On a mid-century ranch off a narrow private drive near the foothill roads, our crew opened a kitchen wall to find cloth-wrapped wiring and undersized framing that failed load-bearing checks. We wrote a change order for a full rough-in upgrade and engineered shear reinforcement, then scheduled deliveries in smaller trucks to avoid blocking the drive. The homeowner approved everything in writing before we touched the framing, and the inspection sign-off cleared the way for KraftMaid cabinets and a Cambria countertop.
Trusted Brands We Service in San Antonio Heights
We source materials from a curated portfolio of 50+ brands, and for San Antonio Heights remodels we lean heavily on materials that handle this climate. CertainTeed and Owens Corning roofing shingles hold up under intense summer UV and Santa Ana wind. James Hardie fiber cement siding gives you noncombustible cladding the county fire inspector recognizes on sight. Cambria and Silestone countertops give you options at different price points without switching contractors. Your remodel, fully managed, with materials priced and ordered through one accountable source.
See the difference
Before
After
Before
After
Before
AfterCommon Home Remodeling Problems We See in San Antonio Heights Homes
- Outdated wiring and undersized framing. Mid-century ranch homes in the 91784 zip code were built to codes that no longer apply. Once we open a wall, the inspector will require electrical and structural upgrades before we can close it back up.
- Failed waterproofing around decks and retaining walls. Sloped foothill lots concentrate water against foundations, and years of semi-arid heat followed by winter rain cycles have done damage. We inspect for it before demolition, not after.
- Combustible exterior details that fail brush-clearance inspection. Wood decks, old vents, and untreated eaves can get red-tagged when the county checks fire-zone compliance. We plan for ember-resistant replacements in the original scope.
- Delivery access on narrow private roads. Full-size lumber trucks and concrete mixers often cannot turn around on the winding drives off the foothill roads. We stage materials in smaller vehicles and plan pours around access windows.
Pricing for Home Remodeling in San Antonio Heights, CA
Remodel pricing in San Antonio Heights is not a mystery if you know what’s in the walls. Here are the ranges we quote most often for this market:
| Project | Typical Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
What moves the number is what we find during inspection, not some arbitrary upcharge at the end. A kitchen with cloth-wrapped wiring and undersized framing lands on the higher end because the rough-in work and shear reinforcement are real costs. A bathroom with solid framing and modern plumbing lands lower. We give you free written line-item quotes, and we write allowances into the contract so surprises are priced before they touch your budget. Call (877) 688-9930 for your free estimate.
We Also Serve Cities Near San Antonio Heights
While this page focuses on Home Remodeling in San Antonio Heights, our full-scope general contracting reaches Upland, Claremont, Rancho Cucamonga, and Montclair. The same single-contract accountability applies whether we’re working on a flat tract home in Upland or a hillside build here in the foothills. Our Home Remodeling team covers the full corridor.
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 Home Remodeling in San Antonio Heights
We do a pre-demolition inspection first, and we write allowances into your contract for the repairs we expect to find. If we open a wall and discover something worse, you get a written change order with an exact price before we do any additional work. Nothing gets touched without your written approval. Call (877) 688-9930 to talk through what your home likely needs.
Because San Antonio Heights sits in a foothill fire zone, county inspectors enforce ember-resistant vents, noncombustible siding like James Hardie, and Class A roofing materials from CertainTeed or Owens Corning. Brush-clearance zones around the structure are also inspected, and combustible decks or eaves may need replacement as part of the same permit. We plan these costs into your scope from day one.
Narrow, winding private drives off the foothill roads often cannot accommodate full-size lumber trucks or concrete mixers. We stage materials in smaller vehicles and coordinate pours around access windows so your schedule stays intact. This is standard practice for our San Antonio Heights jobs, and it’s priced into the plan, not sprung on you later.
A pre-demolition inspection catches outdated wiring, undersized framing, and failed waterproofing before walls come open, so you get a realistic quote instead of a lowball that balloons mid-job. Older mid-century ranch homes in the 91784 zip code almost always have something hiding. Our inspection tells us what to budget for before we write the contract.
A draw schedule is a payment plan tied to completed milestones, not a lump sum upfront. You pay for work as it’s finished, on a schedule we agree to before the job starts. It keeps the project moving without you carrying all the risk, and it’s standard on every San Antonio Heights remodel we run.
Written by Brent Calloway, Owner at Square One Builders, serving San Antonio Heights since day one.