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 Bloomington
Bloomington sits in a unique spot: an unincorporated county island hemmed in by Fontana, Rialto, and Colton. That matters for your remodel because nearly every permit here runs through San Bernardino County, not a city building counter. If you’re planning a kitchen remodel, room addition, detached shop, or ADU on one of Bloomington’s deep acreage lots, you need a contractor who knows the county path cold. We do. Call (877) 688-9930 and we’ll walk your property, scope the job, and quote it right.
Most Bloomington homes are post-war and mid-century single-story ranches on generous lots. Many have had owner-built additions, unpermitted room conversions, and detached garages added over the decades. That’s the reality we work with every week. When you call Square One Builders, you’re talking to a team that has pulled San Bernardino County permits, legalized old shops, and re-graded pads near the washes. We’re not learning your jurisdiction on your dime.
Why Square One Builders Is Bloomington’s Preferred General Contractor
Bloomington homeowners call us because we scope the whole job before we quote it. That’s rarer than it should be. On a deep lot off Cedar Avenue, we pulled a San Bernardino County permit to legalize a 1960s detached shop a prior owner had built without one, then added a detached ADU pad behind it. The site drained toward the wash, so our crew re-graded the pad and tied the new footing into engineered fill before foundation sign-off. We carried the allowance schedule and change order log in writing so the owner could show clean paper at refinance. That’s how we work here.
Brent Calloway leads our team with a simple rule: every system, one contract, one accountable crew. You don’t juggle a roofer, a window company, a cabinet installer, and a hardscape guy. We manage all of it. For Bloomington’s larger lots, that single-accountability model saves you real money because the grading crew, the framing crew, and the finish crew are all reading the same scope.
We also stock and source materials matched to this climate. Bloomington heat and Santa Ana winds punish cheap stucco and thin roofing. We spec materials that hold up here and we write the line items so you see exactly what you’re paying for before we start.
Styles & brands we work with
Remodeling Contractor in Bloomington
A Remodeling Contractor in Bloomington typically handles interior and exterior renovation on the county’s older ranch homes and newer infill subdivisions alike. The county permit path means work here often takes a bit more plan-check time than in a neighboring city, but the lot sizes give you room to build what you actually want. Expect a Bloomington kitchen remodel to run $14,000 – $45,000, while a bathroom remodel lands at $9,000 – $28,000. Get a site-specific quote before committing. Call (877) 688-9930 for a free estimate.
Ranch Home Interiors
Bloomington’s mid-century ranches respond well to opened-up kitchens and reworked baths. We regularly replace original cast-iron drain lines while we’re in the slab, which is a county-required upgrade on many older homes here. The labor is the same crew, so the sequencing costs less than bringing in a separate plumber after demo.
Detached Shops and Outbuildings
Because Bloomington is county land, we can build detached shops, workshops, and horse-grade outbuildings that neighboring cities would reject outright. The septic and well setbacks on your specific lot dictate where the pad can go, so we walk the site and mark it before we quote. That step alone has saved Bloomington owners thousands in redesign fees.
Licensed General Contractor in Bloomington
A Licensed General Contractor in Bloomington is the difference between a county plan check that passes on the first submittal and one that comes back with redlines and delays. We’re a licensed general contractor, not a trade-specific shop. That matters here because county reviewers want a complete scope: structural, grading, drainage, electrical, plumbing, and finish. We submit it as one package. Home additions in Bloomington run $45,000 – $130,000. ADU construction runs $90,000 – $220,000. Garage conversions run $30,000 – $80,000. Call (877) 688-9930 to get your project scoped correctly.
County Permitting and Legalization
Many Bloomington properties carry unpermitted work from previous owners. When you sell or refinance, the appraisal flags it. We legalize those rooms, additions, and shops by reviewing what’s there, bringing it to current San Bernardino County code, and pulling the retroactive permit. It’s detailed work, and it’s work we’ve done across Bloomington’s 92316 zip code.
Septic and Well Setbacks
If your lot is on septic and well, the county requires specific distances between the leach field, the well head, and any new structure. We map those setbacks before we draw. Get it wrong and your ADU pad moves fifteen feet, the footer plan changes, and your budget shifts. We handle this at scoping, not at plan check.
Trusted Brands We Service in Bloomington
We install roofing from CertainTeed and Owens Corning, and for Bloomington homes that want a heavy architectural shingle, we also spec IKO and Atlas options. The point isn’t the brand name on the box. It’s that we stock and source specific materials for this valley’s heat, wind, and occasional hard downpour near the washes. We keep local part availability in mind for Bloomington customers, so your roof repair or window replacement isn’t waiting on a backorder from out of state. Faster material turns mean shorter project timelines and fewer weather delays.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Bloomington Homes
- Unpermitted owner-built additions and shops. Decades of county living meant many owners built first and asked later. We legalize these, bringing framing, electrical, and foundations up to current San Bernardino County code before you sell or refinance.
- Grading and drainage issues on sandy alluvial lots. Lots near the washes drain hard in a winter storm. We re-grade pads and tie footings into engineered fill so your shop or addition doesn’t flood or settle after sign-off.
- Septic and well setback conflicts. Older Bloomington parcels weren’t laid out with ADUs in mind. When the well head and leach field crowd the buildable area, we redesign around the county’s required distances and avoid a plan-check rejection.
- Heat-stressed stucco and roofing. Bloomington summers and Cajon Pass winds age exterior finishes fast. We spec materials and install methods rated for this climate, not a coastal one.
Pricing for General Contractor in Bloomington, CA
Bloomington pricing reflects county-scale scoping, not city-speed estimates. Here are the ranges we quote most often.
| Project | Bloomington Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
What moves the number on a Bloomington job: septic and well setback constraints, grading and engineered fill on open lots, long material hauls on unpaved flag lots, and whether we’re legalizing existing unpermitted work. We don’t quote acreage work off a phone call. We walk the site, map the setbacks, and write the full scope before you see a number. Call (877) 688-9930 to schedule your free estimate.
We Also Serve Cities Near Bloomington
Our General Contractor team works across the surrounding Inland Empire communities. If you’re in Fontana, Rialto, Glen Avon, or Pedley, the same crew and the same scoping discipline apply. We know the local permit offices, the soil conditions, and the housing stock in every one of these areas. If you’re just outside Bloomington proper, reach out and we’ll confirm we cover your street.
Serving Bloomington, CA — Our Local Coverage Area
We’re based in the Bloomington 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 Bloomington
You need a San Bernardino County permit because Bloomington is unincorporated county land, not an incorporated city. Plans, inspections, and sign-offs route through the county’s building and safety office. We prepare and submit that package for you. Call (877) 688-9930 if you’re unsure which jurisdiction applies to your project.
San Bernardino County requires minimum separation distances between the leach field, the well head, and any new structure, including ADUs and detached shops. The exact distances depend on your lot’s specifics and the county’s current code. We map those setbacks during the site walk so the pad placement works before you commit money. Call (877) 688-9930 for a setback review.
On open lots, especially those sloping toward a wash, grading and drainage are line items, not afterthoughts. You may need engineered fill, a re-graded pad, or a swale. That can add several thousand dollars depending on the site. We price it before we quote so you don’t get a change order later. Call (877) 688-9930 for a site-specific estimate.
Yes. We review the existing structure, bring it to current county code, and pull the retroactive permit through San Bernardino County. This is common on Bloomington properties when a sale or refinance triggers the requirement. We’ve done this across the 92316 zip code, including detached shops and converted rooms. Call (877) 688-9930 to start with a code review.
Kitchen remodels on Bloomington’s ranch homes typically run $14,000 – $45,000. Bathroom remodels run $9,000 – $28,000. The final number depends on the footprint, whether we’re replacing cast-iron drain lines in the slab, and the finish level you choose. We write the allowance schedule up front. Call (877) 688-9930 for an exact quote, free.
Written by Brent Calloway, Owner at Square One Builders, serving Bloomington and the surrounding Inland Empire communities.
Ready to scope your Bloomington project the right way? Call (877) 688-9930 and we’ll walk your lot, answer your permitting questions, and give you a written estimate built on what’s actually there. From the ground up.