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 Highgrove
A full-scope general contractor in Highgrove handles the permitting, site work, structural build, and finish work on one contract, so you never chase down separate trades. Most Highgrove projects we scope run $14,000 to $220,000 depending on whether you’re remodeling a kitchen or building a detached ADU on acreage. If you’re planning a remodel, addition, or outbuilding at 92313, call Brent Calloway and the Square One Builders team at (877) 688-9930 for a free, line-item estimate.
Why Square One Builders Is Highgrove’s Preferred General Contractor Company
Highgrove jobs sit on a different approval track than most Inland Empire work. There’s no city building department to call. Every permit, planning review, and inspection for your 92313 property runs through Riverside County, and semi-rural lots here often rely on septic systems and private wells rather than a municipal grid. That changes which trade gets scheduled first and when your build can actually start. Our General Contractor team has worked enough acreage lots off Center Street, Barton Road, and the eastern edge of Colton to know which county sign-offs will gate your schedule.
We quote Highgrove work with the infrastructure question answered up front: what the county will require for septic, well setback, grading, and access before the structure even gets permitted. That’s the difference between a number that holds and one that turns into change orders by week three. Brent Calloway built Square One Builders around that honesty, and it’s the reason Highgrove homeowners keep our name in their contractor list when the next phase comes up.
One Contractor, Every System
We manage full-scope residential projects from the initial demolition through final finish work. That spans roofing, windows, cabinetry, countertops, plumbing fixtures, siding, fencing, hardscaping, and even prefabricated ADU structures. You don’t hire a roofing crew, then a cabinet installer, then a concrete guy. One contract, one schedule, one team accountable for the whole build.
Built Around Highgrove’s Lot-by-Lot Reality
No two Highgrove parcels quote the same way. Some have county water, some run on a well. Some drain to a municipal system, many need septic sign-off before framing starts. We scope the site work, not just the structure, so the number we hand you reflects what the county will actually enforce.
Styles & brands we work with
Hire a General Contractor in Highgrove
Hire a General Contractor in Highgrove when your project touches more than one trade or when Riverside County approvals will drive the sequence of work. A kitchen remodel here typically runs $14,000 to $45,000. A bathroom remodel lands between $9,000 and $28,000. A home addition on an acreage lot often falls between $45,000 and $130,000 because site access, grading, and utility runs add real cost before the first wall goes up.
Remodel and Addition Work
Older ranch-style homes and scattered rural residential lots make up much of Highgrove’s housing stock. Remodels here often mean rewiring, replumbing, and reframing around decades of ad-hoc additions. We price that honestly and coordinate the structural, electrical, plumbing, and finish trades under one contract.
Detached Shops, Garages, and ADUs
A detached shop or guest-house build in Highgrove is a county-permitting exercise first and a construction project second. Percolation tests, well setback reviews, and planning clearances can add weeks before we pull the building permit. We sequence the draw schedule around those sign-offs so you’re never paying for work the county hasn’t approved.
General Contractor Services in Highgrove
General Contractor Services in Highgrove span interior renovation, exterior systems, and accessory structures, all under one contract. A garage conversion on a Highgrove lot usually runs $30,000 to $80,000. An ADU construction project starts around $90,000 and can reach $220,000 depending on utilities, grading, and finish level. A paver driveway installation ranges from $7,000 to $18,000, and a concrete driveway installation from $4,500 to $12,000.
Site Work and Infrastructure
Open, irregular lots define Highgrove. Grading, drainage, long material hauls up gravel drives, and equipment access all change the price of a build before framing begins. We price equipment reach, concrete pump needs, and utility trenching into the quote so you’re not surprised when the county requires a swale or a septic relocation.
Full-Scope Remodeling and New Construction
From the ground up, Square One Builders scopes, plans, and executes every phase. We sit between you and the county on permits, pull material allowances from the 50+ brand portfolio we carry, and hold one schedule from demo to final inspection.
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.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Highgrove
We spec the right material for your project from brands that hold up to Highgrove’s heat and Santa Ana wind exposure. For roofing on the wildland edge, we source GAF, CertainTeed, and Owens Corning. Window replacements on older ranch homes often call for PGT or Therma-Tru. Countertops range from Cambria at the premium end to Silestone when budget matters. We keep local parts access for Highgrove customers so a roofing repair or window replacement doesn’t stall on a backordered component.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Highgrove Homes
- Quoting off a tract-home template. Highgrove isn’t a subdivision. If the contractor doesn’t know Riverside County controls the permits, septic, well setback, and planning review never get priced into the scope, and the change orders start the week of the pour.
- Underestimating open-lot site work. Grading, drainage, and long material hauls up gravel drives are real costs on Highgrove acreage. Equipment access alone can force a concrete pump where a chute would work on a city street.
- Treating a detached shop or ADU as a simple add-on. Load-bearing, subfloor, and utility rough-in on an unplumbed, off-grid-style lot have to meet county standards. We check that before the permit package goes in, not after the framing inspection fails.
- Heat stress on exterior work. Intense summer heat over 100°F and Santa Ana winds punish roofing, exterior coatings, and fresh concrete. We schedule pours around the heat, use curing methods that hold up in dry inland air, and spec exterior products built for high-UV exposure.
Pricing for General Contractor in Highgrove, CA
Highgrove pricing reflects the lot, not just the floorplan. A home addition runs $45,000 to $130,000. An ADU starts at $90,000 and can reach $220,000. Garage conversions run $30,000 to $80,000. Driveways range from $4,500 to $12,000 for concrete and $7,000 to $18,000 for pavers. What moves the number? Septic and well setbacks, grading and drainage scope, equipment access, and how far concrete trucks and material deliveries have to travel up the drive. We write those allowances into the estimate before you sign anything.
| Project Type | Highgrove Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
Call (877) 688-9930 for a free, written estimate. We’ll walk the lot, check the county requirements, and give you a number that holds.
We Also Serve Cities Near Highgrove
Our service area includes General Contractor in Highgrove plus the surrounding Inland Empire communities of Grand Terrace, Colton, Loma Linda, and Rubidoux. If your project sits on the edge of Highgrove and crosses into a neighboring jurisdiction, we coordinate both permit tracks so one contract still covers the whole job.
Serving Highgrove, CA — Our Local Coverage Area
We’re based in the Highgrove 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 Highgrove
Highgrove is unincorporated Riverside County, so there is no city building department to call. Every permit, planning review, and inspection runs through county offices, which means septic, well setback, and site approval requirements get layered onto the building permit. Call (877) 688-9930 and we’ll walk you through what your specific lot will trigger.
Yes, and it’s one of the most common projects we take on. The county will typically require a percolation test for septic, a well setback review, and planning clearance before we can pull the building permit. We build that approval sequence into the schedule so the project starts clean and stays on track. Call (877) 688-9930 for a free site assessment.
They add real cost, sometimes $5,000 to $20,000 depending on the lot. If your existing septic system can’t handle an added bedroom or bathroom, the county may require an upgraded system. A well setback violation can force a relocated structure footprint. We price those contingencies into the estimate before you commit. Call (877) 688-9930 to scope your specific lot.
Site work includes grading, drainage, access road or driveway preparation, utility trenching, and sometimes concrete pump staging if the pour site sits beyond chute reach. On acreage lots off gravel drives, we also coordinate delivery scheduling so material trucks don’t tear up the access route. Call (877) 688-9930 and we’ll map your site work before quoting the structure.
We front-load the county requirements. Percolation tests, well setbacks, planning clearances, and grading approvals get identified and priced in the initial scope, not discovered mid-build. Then we set the draw schedule around those sign-offs so you’re only paying for work that’s cleared. Call (877) 688-9930 for an estimate that accounts for the county from day one.
Written by Brent Calloway, Owner at Square One Builders, serving Highgrove and the surrounding Inland Empire.