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
If you’re planning a remodel, addition, or ADU on your Highgrove property, you need a team that understands how this community actually works: county permitting, expansive clay soil, long dirt driveways, and homes built forty to seventy years ago. Polaris Contractors handles the full scope, from the roof down to the pavers, under one agreement. We serve Highgrove directly with crews that know ZIP 92313 and the unincorporated Riverside County parcels that make this area different from neighboring cities. Call (855) 473-6535 for a free estimate on your project.
Key Takeaways:
- Highgrove projects often require Riverside County permits, not city permits, which adds 4 to 6 weeks to timelines.
- Expansive clay soil here causes foundation movement; we scope soil conditions before quoting.
- Rural access on large lots changes material delivery and equipment logistics; we plan for it up front.
- Full-scope general contracting covers kitchens, bathrooms, roofing, windows, hardscaping, and ADUs under one contract.
Why Polaris Contractors Is Highgrove’s Preferred General Contractor Company
Homeowners across Highgrove call us because we show up ready for the conditions this area throws at a build. Rick Sondermann built Polaris Contractors on the idea that one accountable team should manage everything: structural work, roofing, windows, kitchens, baths, fencing, hardscaping, and prefab ADUs. We don’t hand you a stack of subcontractor phone numbers. We hand you one point of contact who owns the outcome from first soil test to final inspection.
Our reputation in Highgrove comes from the projects we’ve completed here, including a detached ADU on a half-acre lot off Center Street where county sign-off passed on the first try. We knew the clay soil needed a post-tension slab, so we specified it before the first form was set. We knew the 200-foot dirt driveway would swallow concrete trucks, so we laid a temporary gravel access road. That level of local knowledge isn’t something a general contractor from Riverside or San Bernardino brings to your job. We’ve been working this area long enough to know what the county wants, what the soil does, and what it costs to do it right.
When you call, you get a straight answer about scope, schedule, and price. Estimates are free. The number is (855) 473-6535.
Styles & brands we work with
Residential General Contractor in Highgrove
Residential General Contractor work in Highgrove means something different than it does in a dense subdivision in Colton or Grand Terrace. Many properties here are on large lots with older single-family homes built between the 1950s and 1970s, plus a mix of mobile homes and rural parcels. A General Contractor taking on a Highgrove remodel typically manages structural upgrades, foundation repairs, roof replacement, and energy code compliance all at once because the county will not sign off on an addition without bringing the existing structure up to current standards. A home addition in Highgrove runs $45,000 to $130,000, and an ADU ranges from $90,000 to $220,000 depending on site conditions and utility runs.
County Permitting and Site Planning
Highgrove sits largely in unincorporated Riverside County, which means your project goes through county planning and building departments rather than a city counter. That process adds 4 to 6 weeks and requires early coordination on septic and well setbacks if you’re on a rural parcel. We map those setbacks before we quote so the number on your estimate is the number you pay.
Foundation and Soil Work
Expansive clay soils under many Highgrove homes cause slab movement during dry seasons, which shows up as wall cracks and sticking doors. Before we bid an addition or ADU, we look at soil conditions and drainage. Sometimes that means a post-tension slab and French drains, sometimes standard footings are fine. We tell you which one your lot needs and why.
Hire a General Contractor in Highgrove
When you Hire a General Contractor in Highgrove, you’re hiring someone who has to manage everything the county will inspect: footings, framing, shear walls, roofing, windows, insulation, and final details. That’s the job. A garage conversion runs $30,000 to $80,000. A roof replacement runs $8,000 to $20,000. A concrete driveway on a rural lot runs $4,500 to $12,000 depending on length, slope, and subgrade prep. We carry the full scope, one contract, one accountable team.
Full-Scope Project Management
We manage materials, permits, scheduling, and installation. If your project includes kitchen work, we can pull from KraftMaid cabinetry and Cambria countertops. If it includes windows and doors, we can spec Therma-Tru or ECO Window Systems to fit the home’s age and style. Your project, managed start to finish, with selections guided, not guesswork.
Written Scope Before We Quote
Every Highgrove project gets a written line-item scope before we put a price on it. That scope names the materials, the permit path, the soil plan if needed, and the access plan for equipment. No vague allowances, no change orders because someone forgot the county requires a soils report. We’d rather spend an extra week planning than surprise you mid-build.
Trusted Brands We Service in Highgrove
We hold partner access to 50-plus nationally recognized brands, including Delta repair in Highgrove, and for Highgrove homeowners that means you don’t get stuck with whatever the supply house happens to stock. On window and door packages, we routinely specify Therma-Tru entry systems, ECO Window Systems for energy efficiency, and ES Windows for larger architectural openings. Mr-Glass rounds out our local glass and glazing options. Because we know what Riverside County inspectors look for, we match the product to the permit requirements and the climate, not just the Pinterest photo. Built to the brand’s specification, installed to ours.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Highgrove Homes
- County permit underestimation. Homeowners budget for construction but not for the 4 to 6 weeks of county permitting that outbuildings, ADUs, and major additions require. We build that timeline into the schedule from day one so you’re not paying carrying costs on a delayed project.
- Expansive clay foundation movement. Dry summers here pull moisture out of the soil, and slabs shift. If your addition doesn’t account for soil conditions, you’ll see cracks in the first two years. We scope soil testing and drainage before we pour anything.
- Rural access and material hauls. A 200-foot dirt driveway near Highgrove’s eastern edge is not friendly to a loaded concrete truck. We plan temporary gravel access, material staging, and equipment turnarounds before quoting so logistics don’t turn into labor overages.
- Aging mechanical and energy systems. Many 1960s-era Highgrove homes were built before current energy codes. When we pull permits, the county may require insulation, window, and HVAC upgrades as part of the scope. We flag those requirements early so your budget reflects reality.
Pricing for General Contractor in Highgrove, CA
Prices in Highgrove track the Inland Empire market but shift based on site conditions. A slab on flat, stable ground costs less than a slab on expansive clay requiring a post-tension design. A short driveway costs less than a long one where we need temporary access road. Here are the ranges we quote most often:
| Project | Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Roof Replacement | $8,000 – $20,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
Call (855) 473-6535 and we’ll walk your property, check the soil and access, and give you a written estimate that reflects what it actually takes to build in Highgrove. Free, no obligation.
We Also Serve Cities Near Highgrove
Our team covers Highgrove and the surrounding communities, including Grand Terrace, Colton, Loma Linda, and Rubidoux. If you’re on the edge of Highgrove or just over the county line, call us anyway. We’ll tell you what jurisdiction you’re in and what it means for your permit.
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
Yes. Most Highgrove parcels are in unincorporated Riverside County, so ADUs go through county planning and building departments, not a city. That process typically adds 4 to 6 weeks to your timeline and requires septic and well setback review if you’re on a rural lot. Call (855) 473-6535 and we’ll check your parcel before you spend a dollar on plans.
Expansive clay shrinks during dry seasons and swells when it rains, which moves slabs and causes wall cracks. Additions and ADUs on this soil often need post-tension slabs, French drains, or moisture-managed footings. We test soil conditions before quoting so the foundation design matches what’s under your lot.
Yes. Detached shops, outbuildings, and secondary structures fall under county setback rules, which vary by parcel size and zoning. We handle the setback verification, grading and drainage plan, and structural design as part of the full scope. Most outbuildings in Highgrove run through the same county permit path as ADUs.
A written scope should name the exact materials, the permit path, the soil and drainage plan if applicable, and the equipment access plan for your lot. Ours does. If a contractor won’t put soil assumptions and permit timelines in writing, you’ll pay for the omissions later as change orders.
We plan the access route before construction starts. That may mean temporary gravel roads, staged material drops, or smaller equipment for tight driveways. We price that logistics into the estimate, so you’re not surprised by a stranded concrete truck or a four-hour hand-carry of drywall.
Ready to plan your Highgrove project? Call (855) 473-6535 for a free estimate. We’ll walk the property, review soil and access, and give you a written scope you can actually build from.
Written by Rick Sondermann, Owner at Polaris Contractors, serving Highgrove and greater Riverside County.