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 Muscoy
Hiring a general contractor in Muscoy means working with someone who understands county permits, rural lot setbacks, and the realities of building on unincorporated land. We pull permits through San Bernardino County Land Use Services, not the City of San Bernardino, because that’s the jurisdiction that governs every project here. That single difference shapes how we scope, price, and schedule work on Muscoy properties. Call (877) 752-4194 for a free estimate on your project.
Why Milpitas Construction Is Muscoy’s Preferred General Contractor Company
Muscoy homeowners call us because we already know what County inspectors will flag before we submit drawings. We’ve worked on lots along Cajon Boulevard, around State Street, and off the dirt roads that climb toward the San Bernardino foothills. The difference between a smooth inspection and a stop-work order in Muscoy is often just knowing which setbacks apply to your specific lot. Ken Stafford, who leads our team, insists every project starts with a lot-specific review: septic clearances, well distances, drainage patterns, and access for equipment. That’s how we keep Muscoy jobs moving and inspection sign-offs clean.
We don’t treat Muscoy as an extension of San Bernardino or Rialto. The permitting track is different here, and so is the housing stock. Many homes on large county lots were owner-built decades ago, some with additions that never saw an inspector. We know how to bring those structures up to current County code without tearing down more than necessary. Our General Contractor team handles everything from kitchens and bathrooms to full exterior work under one contract.
Styles & brands we work with







Hire a General Contractor in Muscoy
Hire a General Contractor in Muscoy when your project touches structure, systems, or square footage, and you need someone who manages county permits, materials, and every trade. On a typical Muscoy lot, that often means an addition to an older single-story home, a garage conversion into a rental unit, or a new ADU in the back corner of the property. We scope the job against County Land Use Services requirements before we quote, so the number you see reflects what will actually pass inspection. Expect a home addition in Muscoy to run $45,000 – $130,000, a garage conversion $30,000 – $80,000, and a full ADU $90,000 – $220,000, depending on site conditions and finishes.
County Permit Work
Every structural job in Muscoy goes through San Bernardino County, not the City of San Bernardino. We prepare the plans, submit to Land Use Services, schedule inspections, and stand with you when the inspector walks the site. If your property has older work that was never permitted, we figure out what can be grandfathered and what needs to come up to code before the new scope gets approved.
Site Access and Material Haul
Long dirt driveways and soft ground after rain change how we deliver materials and what equipment we can use. On a half-acre lot with a narrow access path, we may hand-carry framing lumber or use smaller machinery, and that labor shows up in the quote. We build that reality into the estimate from day one, so there are no surprises when the concrete truck has to stage at the road.
General Contractor Services in Muscoy
General Contractor Services in Muscoy span the full scope of what a county lot demands: additions, ADUs, garage conversions, roofing, windows, fencing, and interior remodels. Because Muscoy’s housing stock is older and often owner-built, we see a steady stream of structural repairs, re-roofs after Santa Ana wind events, and drainage fixes on sloped lots. The work starts with a site walk where we check the grade, the septic and well locations, and the access route for trucks. Then we give you a written line-item quote with the brands we’ll spec by name, so you know what’s going into your home.
ADUs and Prefab Structures
Muscoy’s large rural lots are well suited to detached ADUs, but County setbacks for septic tanks and wells often shrink the buildable area more than homeowners expect. We work with prefab manufacturers like Abodu, Dvele, and Boxabl to put a factory-built unit on your lot, or we frame it traditionally from the pad up. Either way, we handle the County permit, the foundation, utilities, and final inspection.

Septic, Well, and Grading Scope
Before we quote any addition or ADU, we map the septic tank, leach field, and well on your property. County code sets minimum distances between those systems and any new living space, and ignoring them is the fastest way to fail an inspection in Muscoy. If your lot drains toward the house, we include regrading, swales, or a retention basin in the scope, because water against a foundation here is a long-term structural problem.

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 Muscoy
We spec materials by name, so Muscoy homeowners never guess what’s going into their project. For windows and doors, we install ECO Window Systems and ES Windows. For roofing, we work with GAF and CertainTeed. Kitchen remodels lean on KraftMaid and Wellborn cabinetry, Cambria and Caesarstone countertops, and Kohler and Grohe fixtures. Hardscaping jobs use Belgard, Unilock, and Techo-Bloc pavers. Siding comes from James Hardie. Having 50+ brand-name product lines under one roof lets us pull from local supply yards quickly and keeps your Muscoy job from stalling on a backorder.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Muscoy Homes
- City-of-San-Bernardino permits pulled on Muscoy property. A crew that assumes city jurisdiction files the wrong permit, and the job gets red-tagged. We verify the County Land Use Services path before we touch a wall.
- Septic and well setbacks overlooked. County code requires minimum distances between new structures and existing septic tanks, leach fields, and wells. Missing that detail fails inspection and forces redesign mid-project.
- Material haul underestimated on long dirt driveways. Soft ground after rain or a narrow gate means concrete trucks and lumber deliveries can’t always reach the pad. We plan staging and, when needed, smaller equipment from the start.
- Non-permitted additions discovered during a remodel. Many Muscoy homes have owner-built additions that never saw an inspector. Trying to remodel around them without addressing code compliance can stall the whole project. We assess what’s grandfathered and what has to be corrected before new work can pass.
Pricing for General Contractor in Muscoy, CA
What you’ll pay depends on county permits, site access, and the condition of the existing structure, not just the square footage. Here are the current market ranges we quote for Muscoy work:
| Project | Typical Muscoy Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
Lot conditions move the needle. A steep grade adds drainage work. A long dirt driveway adds haul costs. Grandfathered non-permitted work adds correction scope. We walk the site, check the county records, and give you a written quote that holds. Call (877) 752-4194 to schedule your free estimate.
We Also Serve Cities Near Muscoy
Our General Contractor in Muscoy work regularly takes us into neighboring communities, including San Bernardino, Rialto, Highland, and Crestline. Each has its own permitting track, but the same single-contract accountability applies. If your project sits near the Muscoy boundary, call and we’ll confirm which jurisdiction governs your lot.
Serving Muscoy, CA — Our Local Coverage Area
We’re based in the Muscoy 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 Muscoy
Yes. Muscoy is unincorporated San Bernardino County, so every ADU and addition permit goes through County Land Use Services, not the City of San Bernardino. We handle the full application, plans, and county inspections. Call (877) 752-4194 and we’ll check your lot’s permit history before you commit.
County code sets minimum distances between new living space, septic tanks, leach fields, and wells. On a smaller Muscoy lot, these setbacks may shrink the buildable footprint and change where your ADU or addition can sit. We map the systems during the initial site walk so the quote reflects the real buildable area. Call for a free lot review.
Expect staging at the road if your driveway is long, narrow, or soft after rain. We may bring in smaller equipment or hand-carry materials, which adds labor but keeps your job moving. We build this into the estimate so the price you see is the price you pay. Call
Yes. Many Muscoy homes have owner-built garages, rooms, or extensions that were never inspected. We assess what can be grandfathered under current County code and what needs correction before new work can pass. Then we fold the code compliance scope into your project so it’s handled under one permit. Call for a site assessment.
We read the existing grade, check where water moves during the rainy season, and design the foundation and drainage together. Sloped lots may need retaining walls, swales, or a re-graded pad before concrete goes in. That work is included in the quote, not added later. Call (877) 752-4194 for a free drainage and grading evaluation.
Written by Ken Stafford, Owner at Milpitas Construction, serving Muscoy and the surrounding communities.
Why Muscoy Chooses Milpitas Construction
We set the standard for general contractor in Muscoy.
No Change-Order Surprises
The written quote you sign is the price you pay. Anything we find mid-job gets priced and approved by you in writing before we touch it.
Licensed & Insured
Fully certified technicians who meet all local and state licensing requirements.
Upfront Pricing
No hidden fees, no surprises. You approve the price before any work begins.
Guaranteed Work
Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.
How It Works in Muscoy
Getting your general contractor handled is simple and fast.
Call or Request a Free Estimate
Tell us about your general contractor needs and we provide an upfront, transparent quote — no obligation, no hidden fees.
Licensed Technician Dispatched
A background-checked, certified technician arrives in Muscoy — typically within 30–60 minutes, with parts stocked on the truck.
Problem Solved, Guaranteed
We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.
What happens when you call
- 1A real person answersNo phone trees — talk to a local general contractor pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Muscoy Customers Say
Trusted by homeowners across Muscoy and surrounding areas.
"Excellent build. Costs came in about six percent over the original contract, driven mostly by material price movement during the build, which he documented each time."
"Weekly site meeting, every week, with a written summary afterward. I always knew where the money and the schedule stood."
"Quality construction and a professional operation. Communication was strongest at the site meetings, and slower by email in between."
Our Work in Muscoy
A look at recent construction projects across Muscoy and surrounding areas.
Ready for General Contractor in Muscoy?
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