General Contractor in Highland — Free Estimate, One Written Price

Fast, Reliable General Contractor Across Highland

Square One Builders is a licensed general contractor serving Highland, CA with full-scope remodeling, additions, and ADU construction from the ground up. If you’re planning a kitchen remodel, a hillside addition, or a detached ADU on acreage, call us at (877) 688-9930 and we’ll walk your property with you before you commit to a quote. We know Highland’s terrain, its county permit triggers, and the difference between a bid that holds and one that falls apart at inspection.

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Most of our Highland work sits along the city’s northern edge, where county fire codes, septic setbacks, and slope drainage shape everything from footing depth to roof assembly. That local knowledge is why homeowners here bring us in for projects that other general contractors quote blind. We don’t quote blind. We walk the lot first.

Why Square One Builders Is Highland’s Preferred General Contractor Company

Highland homeowners keep calling us back because we scope the parts of a project that other contractors skip until they become change orders. A room addition off Baseline isn’t the same job as one up near Greenspot Road. One is a straight permit pull and standard floor system. The other might mean importing fill, setting drainage away from a leach field, and meeting San Bernardino County’s fire-defensible building requirements before the inspector will even look at framing.

Brent Calloway started Square One Builders to fix the way remodels get managed. One contractor, every system. That means the same team that frames your ADU also coordinates the roofing, windows, cabinetry, plumbing fixtures, and hardscaping. No finger-pointing between subs. Your remodel, fully managed under one contract.

Highland customers regularly tell us two things. First, that our quotes carry line-item specificity they didn’t get from other bidders. Second, that we actually show up when we say we will. On a hillside lot in the 92346 ZIP, where a concrete truck that can’t get up the driveway can delay a pour by a week, that reliability matters more than most homeowners realize until they’ve lived through the alternative.

We are state-licensed and insured. We pull permits, walk inspections with the county, and build to the code your parcel actually falls under. In Highland, that code changes from street to street. We know where the line is.

Hire a General Contractor in Highland

Hire a General Contractor in Highland when the scope of your project touches more than two trades and the permitting path runs through San Bernardino County. A typical home addition in Highland runs $45,000 – $130,000 depending on foundation work, fire-resistant assembly, and site access. A garage conversion runs $30,000 – $80,000. A detached ADU runs $90,000 – $220,000 when engineered fill, septic placement, and fire-defensible construction are part of the job.

Full-Scope Additions and ADUs

Highland’s northern boundary sits inside the wildland-urban interface. That means any addition or ADU you build there triggers fire-defensible construction requirements: ember-resistant vents, Class A roofing, and 100 feet of defensible space around the structure. Flatland tract cities to the south don’t enforce this the same way. We do the code check before we give you a number, so the number means something.

Septic, Wells, and Setback Planning

Properties off Greenspot Road and along the foothill edge often run on septic and private wells. A shop or detached ADU has to clear specific setbacks from both, and moving a leach field is a five-figure conversation. We flag these conflicts during scoping. If your quote doesn’t account for them, the change order will.

General Contractor Services in Highland

General Contractor Services in Highland cover everything from kitchens and bathrooms to whole-home remodels, room additions, deck construction, and prefabricated ADUs. What makes Highland different is the land itself. Hot inland summers affect concrete curing. Fall Santa Ana events push dry wind through the Cajon Pass corridor, so site protection and material staging have to be secured against sudden gusts. Winter rain means grading and drainage planning can’t be an afterthought.

Kitchen and Bathroom Remodels

A kitchen remodel in Highland typically runs $14,000 – $45,000. A primary bath runs $9,000 – $28,000. We spec materials through a portfolio of 50+ brands, including KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, and Kohler, Moen, and Grohe plumbing fixtures. We spec the right material for your project, at the tier that fits your budget, without making you manage three separate supply chains.

Driveways, Hardscaping, and Site Work

Highland lots frequently need more than a structure. Paver driveways, concrete flatwork, and drainage swales are part of the same scope when we run a project. On acreage, we grade first. A paver driveway here runs $7,000 – $18,000; a concrete driveway $4,500 – $12,000. The number moves based on slope, soil condition, and whether a pump truck has to reach the pour from the road.

Trusted Brands We Service in Highland

We stock and install roofing systems from GAF, CertainTeed, and Owens Corning, and we’re authorized to work with prefabricated structure partners including Abodu, Dvele, Boxabl, Mighty Buildings, and Plant Prefab. For Highland’s wildland-adjacent parcels, we regularly spec Class A assemblies from GAF and CertainTeed because they clear the county fire marshal’s review without negotiation. For windows on exposed hillside elevations, we pull from PGT and Therma-Tru. Highland jobs rarely run on one brand alone. That’s the point of a general contractor with a full sourcing bench. Your remodel, fully managed, from the roof assembly down to the pavers.

Common General Contractor Problems We See in Highland Homes

• Fire-defensible scope added mid-project. A contractor quotes an ADU without checking the county’s WUI map. The permit review comes back requiring ember-resistant vents and a Class A roof assembly, and the budget moves by thousands. We verify the fire zone before we write the quote.
• Septic and well setbacks discovered after the design phase. A detached ADU plan looks clean until the county points out the leach field is 40 feet from the proposed stem wall. Relocating a leach field or redesigning the pad costs real money. We pull the site plan and check setbacks during scoping.
• Material haul and pump fees on narrow acreage driveways. A dirt driveway with a soft shoulder won’t take a fully loaded concrete truck. Someone has to budget a pump or a smaller delivery schedule. We account for equipment access before the pour is on the calendar.
• Slab and foundation issues from skipped grading. Open lots need a drainage plan. When winter rain channels under a slab, the inspection sign-off stalls and the repair is expensive. We run grading and drainage as a line item, not an afterthought.

Pricing for General Contractor in Highland, CA

We Also Serve Cities Near Highland

We work throughout the eastern Inland Empire, including General Contractor in Highland and the surrounding communities. Homeowners in San Bernardino, Muscoy, Redlands, and Loma Linda call us for the same full-scope approach. If your project sits in the foothills or on acreage anywhere along the 210 or 330 corridors, we can scope it the same way we scope Highland jobs: from the ground up.

FAQs About General Contractor in Highland