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 Banning
A general contractor in Banning, CA typically charges $45,000 – $130,000 for a full home addition and $90,000 – $220,000 for an ADU, with garage conversions running $30,000 – $80,000. Projects here take longer to scope than they do in the valley because most acreage work requires Riverside County permits, not city permits. That changes the timeline, the fees, and the engineering. If you’re planning a build on open land around Banning, call Square One Builders at (877) 688-9930. We’ll walk you through what actually applies to your lot before you spend a dollar.

Brent Calloway founded Square One Builders to give homeowners one contractor who answers for the whole job, from the roof down to the pavers. Our General Contractor team has worked on mid-century tract homes in the old-town grid, newer hillside builds near Sun Lakes, and rural ranchettes off Sunset Avenue. We know which lots pull county permits, which wells and septic systems set the setbacks, and which roof assemblies survive a Santa Ana season intact. That local knowledge shows up in our quotes, our schedules, and the way we leave a job site.
Why Square One Builders Is Banning’s Preferred General Contractor Company
Banning homeowners call us because we scope the job the way it needs to be scoped out here, on the pass. A kitchen remodel in a flatland tract home is one thing. A 1,200 square foot ADU on unincorporated acreage with no city sewer is another. We’ve done both, often in the same month, and we do them under one contract.
Our reputation in Banning comes from quotes that hold up. When we price a build, we include the wind-uplift engineering, the county plan-check time, the septic and well setbacks, and the material hauls over dirt drives. Nothing surfaces mid-project as a surprise change order because nothing was left out of the scope. Homeowners around the 92220 zip code hear that from neighbors, and they call.
Brent Calloway set the standard for how we bid acreage work: walk the lot, check the access, pull the county records, then write the number. That’s why a Banning homeowner can sign a contract and know the draw schedule will match what we promised.
Styles & brands we work with







Hire a General Contractor in Banning
Hire a General Contractor in Banning when you’re adding square footage, converting a garage, or building a detached ADU or shop on open land. The scope changes fast here. A home addition in the old-town grid might run $45,000 – $130,000 depending on foundation work, wind-rated framing, and whether the existing structure needs a service panel upgrade. On rural acreage, expect to add county plan-check fees, septic and well clearance work, and extended equipment access planning.
Acreage Builds and County Permits
Most large Banning acreage sits in Riverside County jurisdiction, not the city of Banning. That means county plan checks, county inspectors, and county fee schedules. If a quote is built on city permitting, it is wrong. We pull the right records before we price.
Additions and ADUs on Unincorporated Lots
A detached ADU off Sunset Avenue or any rural ranchette has to meet county setbacks for septic tanks, leach fields, and wells. We coordinate those clearances before the pad is graded so the structure doesn’t get sited somewhere the health department won’t sign off.
General Contractor Services in Banning
General Contractor Services in Banning cover the full residential scope: room additions, home additions, garage conversions, and ADU construction, plus the structural, exterior, and finish work that goes with them. A garage conversion in Banning runs $30,000 – $80,000. An ADU runs $90,000 – $220,000. The spread depends on pad grading, septic and well work, wind-rated structural specs, and how far materials have to travel on an unpaved road.
Grading and Drainage on Open Lots
Banning sits at the mouth of the San Gorgonio Pass, so a flat-looking lot still sheds water fast when the winter rains come. We grade for positive drainage away from the slab, spec retaining where the slope demands it, and make sure the county sees a drainage plan that holds.

Shops, Outbuildings, and Detached Structures
A detached shop or a combined shop-and-ADU structure on a ranchette is a different engineering animal than a garage conversion. Roof straps, anchor bolts, and nailing schedules have to be spec’d for sustained 30 – 50 mph winds, because that is what the pass delivers every season, not just during a Santa Ana event.

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.
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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 Banning
We spec roofing and exterior materials from manufacturers that hold up in wind, heat, and grit. CertainTeed and Owens Corning both make high-wind-rated shingle lines, and we install them with enhanced nailing schedules and uplift-rated fasteners. IKO and Atlas give us solid mid-tier options when budget matters more than the premium label. Because we keep our brand portfolio broad, we can match the right product to the right exposure, not force one brand onto every Banning roof. Materials come through our supply chain, so we are not waiting on a local yard that has been picked clean the week after a windstorm.
See the difference
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After
Before
After
Before
AfterCommon General Contractor Problems We See in Banning Homes
Here is what we repeatedly see on Banning acreage and older homes, and what it means for your project:
- Bids built on city of Banning permits instead of Riverside County permits. County plan-check timelines, septic/well clearances, and grading reviews add time and fees the original quote never accounted for. We pull jurisdiction records before we price anything.
- Material haul and equipment access underestimated on dirt drives. A quarter-mile unpaved road changes mobilization cost, delivery scheduling, and sometimes which equipment can even reach the pad. We walk the access and price the haul realistically.
- Wind-uplift engineering skipped on outbuildings and additions. The first sustained 30 – 50 mph wind event lifts roofing or racks a structure that was never strapped for pass conditions. Every Banning structure we build gets straps and anchors rated beyond valley standard.
- Grading and drainage treated as an afterthought. On an open lot at the edge of the high desert, water moves fast when it does rain. We scope grading and drainage before the slab, not after the first winter washout.
Pricing for General Contractor in Banning, CA
Here are the real numbers for the big-ticket projects we scope and build on Banning acreage and in-town lots. These ranges reflect the pass: wind-rated framing, county permitting, and haul distances all show up in the final number.
| Project | Typical Banning Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves a Banning project within these ranges? The big three are wind-rated structural requirements, county permit and plan-check fees, and site access for material delivery and equipment. A detached ADU with septic and well clearances and a long dirt drive is a completely different quote than a garage conversion on a city lot. We price both accurately because we’ve built both. Call (877) 688-9930 for a free estimate on your specific property, and we will walk the lot before we give you a number.
We Also Serve Cities Near Banning
Square One Builders works throughout the San Gorgonio Pass and the surrounding foothills. We serve homeowners in Cabazon, Calimesa, Yucaipa, and Valle Vista, and we bring the same acreage and wind-engineering discipline to every job, whether the parcel is in city limits or unincorporated county land. If you are near Banning and planning a major remodel or build, call us and we will come look at the site.
Serving Banning, CA — Our Local Coverage Area
We’re based in the Banning 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 Banning
If the property sits outside Banning city limits, it falls under Riverside County jurisdiction, and you will need county building permits, county plan checks, and county inspections. We verify jurisdiction on every lot before we quote, so the permit path never surprises you mid-project. Call (877) 688-9930 and we will check your parcel.
Banning’s sustained 30 – 50 mph winds put uplift loads on roofs and walls that valley building codes near Riverside or Palm Springs never anticipate. We spec hurricane straps, enhanced nailing schedules, and heavier anchoring as baseline, not upgrades, because the pass demands it. Anything less will fail at the first real wind event.
We grade the pad for positive drainage away from the structure, address any slope with retaining where needed, and submit a drainage plan the county will accept. On Banning’s high-desert edge, water moves fast in winter storms, so drainage is engineered into the scope before the slab is poured, not patched after the first washout.
Yes. We have run material deliveries and heavy equipment over quarter-mile dirt drives on Banning ranchettes more times than we can count. We plan the haul, the staging, and the equipment path before the schedule is set so the draw schedule stays clean and the site stays workable. Access is part of the quote, not an afterthought.
We build the wind-rated specs into the first quote, so there is no mid-project add for straps, anchors, or enhanced nailing. What you are paying for is accurate scoping, not a stripped bid that changes once the county sees the plans. Call (877) 688-9930 for a free estimate that reflects the pass, not the flatland.
Your Banning remodel, fully managed from the first site walk to the final inspection. Call Square One Builders at (877) 688-9930 to schedule a free estimate, and we will scope your project for the conditions that actually apply to your lot, the pass winds, the county permit path, and the ground it sits on.
Written by Brent Calloway, Owner at Square One Builders, serving Banning and the San Gorgonio Pass since day one.