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 Loma Linda
When you need a General Contractor who understands Loma Linda’s older housing stock, you want someone who won’t flinch when walls come open. Square One Builders has worked extensively in the 92354 residential core, where mid-century ranch homes hide wiring and framing issues that newer subdivisions simply don’t have. We quote honestly up front, with written allowances for the surprises we know are likely, so your remodel doesn’t stall or spiral. Call (877) 688-9930 for a free estimate, and we’ll walk your Loma Linda property together before any numbers are finalized.

Key Takeaways:
- Full-scope general contractor serving Loma Linda’s 92350, 92354, and 92357 ZIP codes.
- We write allowances for aluminum wiring and framing upgrades into every quote on pre-1980 homes.
- Single contract for kitchens, bathrooms, additions, roofing, and ADU work. No trade juggling.
- Free estimates with line-item pricing. Call (877) 688-9930 to schedule.
Why Square One Builders Is Loma Linda’s Preferred General Contractor Company
Homeowners in Loma Linda keep calling us for one reason: we plan for what’s actually inside these walls. The 1950s and 1960s houses near Loma Linda University were built fast and lean. Aluminum branch wiring. Galvanized supply lines that have quietly corroded. Undersized 2×4 framing that was never meant to carry a modern kitchen island or a second-story addition. A contractor who quotes without accounting for that is quoting fiction. We don’t do fiction.
Our reputation in the Loma Linda area comes from showing up, opening things up, and telling you the truth about what we find. Brent Calloway built Square One Builders on written change orders and itemized allowances, not verbal promises. When a project hits a hidden issue, you see the exact scope and the exact cost in writing before we proceed. No mystery line items, no “we’ll figure it out later.”
We also understand Loma Linda’s rhythm. The medical center runs 24 hours a day, and the neighborhood around it expects contractors who respect that. We schedule noisy work around hospital shift changes and coordinate inspections with city plans review that’s stricter than most Inland Empire communities. That local operating knowledge saves you real time and real money.
Styles & brands we work with







Hire a General Contractor in Loma Linda
Hire a General Contractor in Loma Linda when the project involves more than one trade, a structural change, or a permit that triggers code upgrades. A full kitchen remodel in Loma Linda typically runs $14,000 – $45,000. A bathroom remodel lands between $9,000 – $28,000. Home additions start around $45,000 and can reach $130,000 depending on square footage and foundation work. ADU construction ranges from $90,000 – $220,000, and garage conversions run $30,000 – $80,000.
Opening Walls in Older Loma Linda Homes
This is where your quote either holds or falls apart. Pre-1980 homes in 92354 frequently have aluminum branch wiring and framing that does not meet current shear-wall requirements. When we open a wall for a kitchen remodel or addition, the city of Loma Linda requires us to bring exposed systems to current code. We write those allowances into your contract up front, so the final number is close to the first number.
Single-Contract Remodels and Additions
You shouldn’t need three phone numbers to finish one kitchen. Square One runs structural work, electrical, plumbing, cabinetry, countertops, roofing, and hardscaping under one contract. One team, one schedule, one person accountable. That’s the whole point of a general contractor, and we take it literally.
General Contractor Services in Loma Linda
General Contractor Services in Loma Linda cover everything from small single-room refreshes to full ADU construction on a compact in-town lot. Because the residential core near Loma Linda University is tight, we plan staging carefully: material drops scheduled around trash pickup, deliveries that don’t block driveways, and noise abatement during hospital quiet hours. Those details matter when your neighbor works nights at the medical center.
Kitchen and Bathroom Remodels
Kitchen remodels start at $14,000 and bath remodels at $9,000 for full gut-and-replace scope. Cabinetry, countertops, plumbing fixtures, tile, lighting, and any structural work run through one contract. We spec brands like CertainTeed and Owens Corning for roofing, and we’ll help you balance cabinet and countertop brand choices against your budget without switching contractors.

ADUs and Garage Conversions
Garage conversions in Loma Linda run $30,000 – $80,000, and detached ADU construction starts at $90,000. Small lots in 92354 mean setbacks and parking requirements get scrutinized harder than in larger Inland Empire cities. We pull every permit, handle every inspection, and design to the lot you actually have, not the lot a stock plan assumes.

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.
Trusted Brands We Service in Loma Linda
We source from a curated portfolio of 50+ nationally recognized material brands, so you get real options instead of one supplier’s leftovers. For roofing on Loma Linda homes, we regularly install CertainTeed and Owens Corning systems, including impact-rated and fire-resistant lines that make sense given the foothill wildfire risk to the north and east. We also spec IKO and Atlas when the project calls for a specific price point or performance profile. We stock common local inventory in Westminster and order Loma Linda-specific materials with enough lead time to keep your schedule intact, even during peak summer season.
See the difference
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After
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After
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AfterCommon General Contractor Problems We See in Loma Linda Homes
- Mid-century wiring and galvanized pipes: Homes built in the 1950s and 1960s around the university frequently have aluminum branch circuits and corroding galvanized supply lines. Opening a wall triggers a code-required rewire and replumb that a vague quote won’t cover.
- Notched and undersized headers: Older framing was often cut in ways that were acceptable then and are not now. When we open a bearing wall for an addition, we regularly find load paths that need an LVL header replacement before drywall can go back.
- Quiet-hours scheduling conflicts near the medical center: Noisy demolition or concrete cutting during hospital shift-change hours creates friction with neighbors and can stall an inspection. We plan the draw schedule around Loma Linda’s actual hours of operation.
- Skipped pre-bid inspections on subfloor and framing: Dry rot and pest damage hide beneath carpet and vinyl. We inspect before we quote, so the number we give you is the number you plan around.
Pricing for General Contractor in Loma Linda, CA
Here’s what a full-scope project costs in Loma Linda right now. These ranges assume a permitted job on a mid-century or later home in the 92354 or 92350 core:
| Project | Typical Cost Range in Loma Linda |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
The factors that move you within these ranges are square footage, structural condition, finish level, and whether the city requires upgrades to electrical, plumbing, or seismic strapping when walls open. We write those allowances into every pre-1980 Loma Linda quote. Call (877) 688-9930 and we’ll give you a line-item estimate based on an actual walkthrough of your home, not a formula.
We Also Serve Cities Near Loma Linda
Our crews work throughout the Inland Empire, including General Contractor in Loma Linda and the neighboring communities of Colton, Grand Terrace, Highgrove, and Redlands. If your project is in one of those areas, the same written-allowance quoting process and single-contract scope applies. Call us for a free estimate anywhere in the region.
Serving Loma Linda, CA — Our Local Coverage Area
We’re based in the Loma Linda 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 Loma Linda
The primary reason is that pre-1980 homes in Loma Linda’s 92354 core often have aluminum branch wiring, undersized framing, and galvanized plumbing that only become visible when walls open. A quote without written allowances for those conditions will inevitably rise. We write those allowances into the contract before we start, and any additional scope is priced and approved in writing before we touch it. Call (877) 688-9930 if you want a quote that holds up.
We build the construction schedule around the hospital’s shift-change hours and Loma Linda’s quiet-community expectations. Demolition, concrete cutting, and roof tear-off are scheduled for mid-morning through early afternoon, and we notify you and your immediate neighbors before any high-noise day. That keeps inspections moving and keeps peace with the people who live and work around the medical corridor.
Any structural change, electrical, plumbing, or mechanical work in Loma Linda requires city permits, and once a wall is open, the city will inspect and require exposed systems to meet current code. That means a kitchen remodel can trigger a panel upgrade, a rewire, or seismic strapping. We pull all permits ourselves, schedule all inspections, and write those compliance items into your contract from the start.
Yes, in most cases. Loma Linda lots near the university are compact, so setbacks, parking replacement, and fire separation requirements get a close look during plans review. We handle the design, plans, permits, and construction together, and garage conversions in Loma Linda typically run $30,000 – $80,000. Call (877) 688-9930 and we’ll tell you whether your specific lot works before you spend a dollar.
We spec fire-resistant roofing and siding materials appropriate for the foothill exposure to the north and east of Loma Linda, and we follow current defensible-space and ember-resistance standards during construction. That includes Class A roofing material options from CertainTeed and Owens Corning and ignition-resistant venting. We won’t sell you a material that doesn’t match the actual fire risk on your street.
When you’re ready to open up an older Loma Linda home and do it right, call (877) 688-9930 for a free, line-item estimate. We’ll inspect before we quote, write the allowances you need, and manage every trade under one contract.
Written by Brent Calloway, Owner at Square One Builders, serving Loma Linda and the Inland Empire since 2004.