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 Crestline
Hiring a general contractor in Crestline means finding someone who actually understands mountain construction, not just someone who builds houses down the hill. We’re Square One Builders, led by Brent Calloway, and we’ve been managing full-scope remodels and additions across Crestline long enough to know that every project here starts with the lot itself: the slope, the snow load, the fire clearance, the narrow road your lumber truck has to climb. When you call (877) 688-9930, you’ll talk to a contractor who plans for Crestline conditions before the first board is cut. From the ground up, we handle the whole job under one contract so you never have to coordinate three different crews on a mountain road.

Why Square One Builders Is Crestline’s Preferred General Contractor Company
Crestline homeowners hire us because we treat the mountain seriously. We know San Bernardino County’s snow-load engineering, WUI ignition-resistant material rules, and defensible-space clearances around pines and oaks because we work with them on every project. That’s not theory; it’s the daily reality of building at 4,000-plus feet where a wrong material choice can fail inspection in a Red Flag zone. On a builder-grade home near Lake Gregory, our crew handled a first-round kitchen upgrade while the builder warranty was still active: we pulled permits for the rough-in, protected the existing subfloor, and set KraftMaid cabinets with Cambria tops and a Moen fixture, all documented in a written scope of work and allowances so the change order stayed clean. We coordinated inspection sign-off before the walls closed, and the punch list and draw schedule were settled before we left the site.
Our General Contractor team works on A-frames, chalets, mid-century cabins, and newer infill builds. We run one accountable crew from demolition to finish, and we’ve built a reputation around doing that without making the homeowner manage the details. Call (877) 688-9930 to talk through what your house needs.
Styles & brands we work with







Hire a General Contractor in Crestline
Hire a General Contractor in Crestline when you’re planning something bigger than a paint job and want one team responsible for every trade. A kitchen remodel here runs $14,000 to $45,000. A bath remodel runs $9,000 to $28,000. A home addition starts around $45,000 and can push to $130,000 depending on slope work and foundation engineering. When it’s time to serious about structural, permits, and HOA sign-off, that’s when you call us at (877) 688-9930.
Warranty-Safe Sequencing
Most remodels on newer Crestline homes touch systems still under builder warranty. We sequence the work so rough-in, mechanical, and structural changes are permitted and documented before any finish work begins. That protects the warranty instead of quietly voiding it.
Architectural Review Ready
Crestline HOAs and county review boards often require materials and colors approved before install. We submit the right documentation early so your replacement windows or exterior finishes don’t get flagged after they’re already delivered.
General Contractor Services in Crestline
General Contractor Services in Crestline cover the work that no single trade can own: whole-home remodels, additions, deck rebuilds, foundation retrofits, and wildfire-hardening upgrades. These jobs sit on sloped, tree-dense lots where material staging, drainage, and fire clearance have to be planned before framing starts. A full kitchen remodel runs $14,000 to $45,000. Cabinet installation alone runs $4,000 to $13,000. Countertop installation runs $2,000 to $6,500. Roof replacement runs $8,000 to $20,000 with snow-load-rated materials from Owens Corning or CertainTeed. Call (877) 688-9930 for a written line-item scope on your project.
Whole-Scope Coordination
We run structural, roofing, cabinetry, countertops, plumbing fixtures, windows, decking, and hardscaping under one contract. No separate specialist calls to chase. One contractor, every system, one schedule.

Mountain Access Planning
Getting a concrete truck or lumber delivery up a narrow Crestline road takes planning. We stage materials, schedule deliveries around weather, and work with county rules on defensible-space clearances so your project doesn’t stall halfway through.

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.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Crestline
We source and install materials from 50-plus nationally recognized brands, and we spec the right material for your project rather than pushing one line on every job. Roofing comes from Owens Corning or CertainTeed, depending on your snow-load and fire-resistance needs. Cabinetry can be KraftMaid for a solid builder-grade step-up or Wellborn when you want a custom look. Countertops include Cambria and Silestone, so you can balance price and durability without switching contractors. We keep local Crestline ordering and delivery in mind, which matters when materials have to sit on a mountain road until the crew arrives. Your remodel, fully managed.

Common General Contractor Problems We See in Crestline Homes
- Builder-warranty blowouts. Homeowners cut into load-bearing or mechanical systems without a written change order, and the builder voids coverage on the whole envelope. We document every rough-in change before walls close.
- HOA rejections after materials arrive. Crestline communities with architectural review often flag replacement windows, roofing colors, or exterior siding after the truck has already climbed the road. We submit approvals before anything gets ordered.
- Snow-load and fire-code misses. Steep-slope homes at 4,000-plus feet need snow-load engineering and ignition-resistant materials. Flatland contractors overlook this; county inspectors do not.
- Deck and pier rot on shaded slopes. Decades of freeze-thaw and pine shade wreak havoc on decks, posts, and stair stringers. We rebuild to current mountain code with proper drainage and clearances instead of patching rot.
See the difference
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AfterPricing for General Contractor in Crestline, CA
Here are market-calibrated ranges for the most common Crestline projects. These reflect what we see across Crestline at current material and labor rates:
| Project | Typical Crestline Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Bathroom Remodel | $9,000 – $28,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
| Roof Replacement | $8,000 – $20,000 |
| Home Addition | $45,000 – $130,000 |
What shifts a Crestline job to the higher end: slope and foundation work, longer material hauls up narrow roads, snow-load engineering, and fire-resistant cladding requirements. We give you a written line-item scope before we start, and we do not change the price mid-job unless you change the scope. Call (877) 688-9930 for a free estimate and an honest walkthrough of your house.
We Also Serve Cities Near Crestline
Square One Builders runs projects across the San Bernardino Mountains and the surrounding foothills. We work in Lake Arrowhead, Muscoy, San Bernardino, and Highland, and we understand the difference between mountain code and flatland tract work. If you’re in one of those communities and want a general contractor who knows both, call (877) 688-9930.
Serving Crestline, CA — Our Local Coverage Area
We’re based in the Crestline 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 Crestline
Yes, if you cut into structural, electrical, plumbing, or HVAC systems without a permit and a written change order, you can void the builder’s coverage on the whole envelope. We keep builder-warranty work legal and documented: permits pulled, rough-in inspected, scope of work in writing, and all changes approved before walls close. Call (877) 688-9930 to review what your warranty covers before you start.
Often yes, especially for anything visible from the outside, like windows, roofing, siding, or exterior changes that accompany an interior remodel. Some Crestline communities also review structural changes on steep lots. We prepare and submit the right documentation early so approval happens before materials are ordered. That keeps the project from stalling after delivery. Call (877) 688-9930 and we will check your community’s rules.
San Bernardino County requires snow-load engineering, WUI ignition-resistant materials, defensible-space clearances around pines and oaks, and steep-slope grading review on most structural work. Roofing, decks, additions, and foundation retrofits all fall under these rules. We handle the county submittal and inspection process as part of the job. Call (877) 688-9930 to find out what your specific project triggers.
Start with the kitchen and bathrooms. A kitchen remodel in Crestline runs $14,000 to $45,000, and a bathroom remodel runs $9,000 to $28,000. These upgrades recover the most daily value and are the rooms where builder-grade cabinets, counters, and fixtures show wear first. Roof and windows come next if they are original. Call (877) 688-9930 to walk through your house and set a priority list.
Yes. Even a small remodel on a mountain home touches permits, HOA rules, and builder-warranty terms. A written scope with allowances means the change order stays clean, the inspection schedule is clear, and nobody argues about what was included. We write scopes for every job, big or small. Call (877) 688-9930 for one on yours.
Call Square One Builders for Your Crestline Project
If you’re planning a remodel, addition, or full-scope renovation in Crestline, start with a real walkthrough from Brent Calloway and the Square One Builders team. We’ll look at your slope, your snow load, your fire clearances, and your builder warranty, and we’ll give you a written line-item estimate. Call (877) 688-9930 to schedule your free estimate. From the ground up, we build Crestline homes to stay that way.
Written by Brent Calloway, Owner at Square One Builders, serving Crestline since 2012.