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
If you’re planning a remodel, addition, or ADU in Muscoy, the first thing to know is that you’re not pulling permits from a city hall. Muscoy is unincorporated San Bernardino County, which means every project runs through San Bernardino County Land Use Services. That single fact changes timelines, inspection scheduling, and how a contractor scopes the work. Our team works Muscoy jobs regularly and knows the county process cold. Call (877) 265-6284 for a free estimate on your project, whether it’s a kitchen, a detached ADU, or a full gut remodel.
Why Sycamore Contractors Is Muscoy’s Preferred General Contractor Company
Muscoy homeowners call us because we don’t treat their property like a tight city lot. The homes here sit on acreage with dirt driveways, septic systems, and wells. That’s a different job than a track home off a paved cul-de-sac in San Bernardino. We’ve pulled county permits for ADUs off State Street, corrected setbacks on lots that hadn’t been surveyed in decades, and scheduled inspections with county staff who drive in from another office. Nate Calloway leads our team and personally reviews the permit path before any work starts, because with our ViewLux service in Muscoy, that step saves weeks and thousands of dollars.
The feedback we hear most from Muscoy customers is that we showed up when we said we would and our scope did not balloon after demolition. County inspection sign-off and fixed line-item pricing are what we build our reputation on. That matters when you’re spending $90,000 to $220,000 on an ADU or $45,000 to $130,000 on an addition. You want an accountable team, not a rotating cast of subcontractors. That’s how we run every Muscoy job.
Styles & brands we work with







Residential General Contractor in Muscoy
A residential General Contractor in Muscoy handles everything from foundation to finish on homes that are often 50 to 70 years old, with owner-built additions, detached garages, and utility connections that may or may not have been permitted when they went in. That means our scope frequently includes legalizing existing work, upgrading electrical and plumbing, and bringing the structure up to current county code before we ever start the pretty stuff.
Garage Conversions and Legalizing Unpermitted Work
Muscoy has a lot of garage conversions that were done decades ago without permits. We regularly help homeowners bring those spaces up to code so they can count them as legal living area. A garage conversion in Muscoy typically runs $30,000 to $80,000, depending on whether we’re adding plumbing, upgrading the foundation, or correcting electrical that was never inspected. If the county flags unpermitted work during an ADU inspection, we handle the correction and the re-inspection in one coordinated pass.
Detached ADUs on Acreage Lots
Building an ADU in Muscoy is different from building one in Crestline or Highland. Septic system setbacks, well clearance, and county fire access rules all shape where the structure can sit on your lot. We work with the Abodu line of prefab ADUs when the site allows it, which shortens on-site construction time on lots where weather and access are factors. ADU construction in Muscoy runs $90,000 to $220,000, and that range reflects everything from a simple studio to a two-bedroom unit with its own septic connection.
Hire a General Contractor in Muscoy
When you Hire a General Contractor in Muscoy, you’re hiring someone who has to know the difference between a county inspection and a city inspection. San Bernardino County Land Use Services handles permitting here, and their inspectors often schedule from a different office than the one that approves plans. A contractor who doesn’t know that will burn your timeline. We know it, plan for it, and build it into the schedule before we quote.
Home Additions with Well and Septic Setbacks
Adding square footage on a Muscoy lot means respecting setbacks from your septic tank, leach field, and well head. Those distances are non-negotiable to the county, and they can force design changes after rough-in if nobody checked them at the start. We verify setbacks during the estimate phase, not after the foundation is poured. A home addition in Muscoy runs $45,000 to $130,000. The range moves with square footage, foundation type, and whether you’re tying into an existing septic system or adding capacity.
Material Haul and Equipment Access
Many Muscoy properties sit at the end of unpaved roads or long dirt driveways. That changes how we bring in lumber, concrete, and equipment. We plan material haul days around weather, because a soaked driveway in January is a different access problem than a graded road in July. These logistics get priced into the estimate, not discovered mid-job as a surprise change order.
Trusted Brands We Service in Muscoy
We’re not tied to one product line in any category, and that’s a real advantage when you’re researching materials for a Muscoy project. On recent jobs we’ve installed Quikrete and Sakrete concrete products for footings and pads, and we’ve specified Cover and Abodu prefab structures where the lot and county requirements allowed. You get brand-name options you can look up and compare before signing. We don’t substitute generic materials unless you ask us to and the county approves it. For Muscoy homeowners, we keep material ordering timed to county inspection schedules so you’re not staring at a pile of lumber waiting on a sign-off.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Muscoy Homes
- Permits pulled from the wrong jurisdiction. Homeowners and even some contractors assume Muscoy falls under the City of San Bernardino. It does not. Pulling permits from the city invalidates the entire inspection path and can force a tear-out of finished work. We verify jurisdiction on day one.
- Septic and well setbacks ignored until after rough-in. On acreage lots, an addition or ADU that sits too close to a septic tank or well head will fail county inspection. Fixing it after the fact usually means redesign, demo, and a second permit cycle. We check setbacks during the estimate.
- Unpermitted additions discovered mid-project. Muscoy’s housing stock includes a lot of owner-built rooms, enclosed patios, and garage conversions that were never permitted. When a new permit touches that work, the county can require it be corrected or brought to code. We scope that possibility before we quote so it’s not a surprise.
- Material haul and equipment access underestimated. Long dirt driveways and unpaved roads in Muscoy add real cost and time. Concrete trucks, drywall deliveries, and equipment trailers don’t all handle soft ground the same way. We plan haul days, weather windows, and staging areas ahead of the quote.
Pricing for General Contractor in Muscoy, CA
Here are the price ranges we quote most often for Muscoy work. These are real numbers for this market, calibrated to county permitting, acreage access, and local material costs.
| Project | Typical Range (Muscoy) |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves the number? For ADUs and additions, the big drivers are septic system capacity, well clearance, foundation type, and how far materials have to travel from the road. A garage conversion costs more when plumbing has to be added and less when the structure is already sound. Every Muscoy estimate is free and itemized. Call (877) 265-6284 and we’ll walk your property, verify setbacks, and give you a written scope before you commit.
We Also Serve Cities Near Muscoy
Our crews work regularly in Muscoy and the surrounding county and city jurisdictions, including San Bernardino, Rialto, Highland, and Crestline. Each has its own permitting office and its own access challenges, and we handle all of them. If your project is anywhere in the Inland Empire, we’ll know which desk to call.
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 all ADUs, additions, garage conversions, and structural remodels require permits from San Bernardino County Land Use Services, not the City of San Bernardino. We handle the permit submittal and inspection scheduling for you. Call (877) 265-6284 to get the permit path started on your project.
County code sets minimum distances between new structures and your septic tank, leach field, and well head. If your planned ADU or addition sits inside those setbacks, the county will not approve the design, and you’ll be redesigning after rough-in. We verify setbacks during the free estimate so the first plan we submit is the plan that passes. Call (877) 265-6284 and we’ll check your lot before we quote.
Yes, this is one of the most common scopes we handle in Muscoy. We pull the county permit, open the walls where required, correct electrical and plumbing, and bring the structure to current code so it passes inspection and becomes legal living area. A typical garage conversion legalization and build-out runs $30,000 to $80,000. Call (877) 265-6284 for a scope walk on your specific property.
Expect longer material delivery windows, possible equipment staging at the road, and weather-dependent scheduling if your driveway is unpaved. We plan concrete pours and drywall deliveries around ground conditions so a delivery truck doesn’t sink to the axles. These logistics are priced into your estimate before we start. Call (877) 265-6284 and we’ll walk your access points as part of the free estimate.
Before we pour a foundation or place a prefab ADU, we check the lot grade and design drainage so water moves away from the structure and toward approved drainage or existing swales. On Muscoy’s open acreage, poor grading shows up fast during winter rains and causes foundation problems later. We scope grading and drainage as part of the build, not as an add-on after the fact. Call (877) 265-6284 for a free estimate that includes grading and drainage review.
One contractor, every phase. From the roof down to the driveway, we handle it under one contract and one point of contact. Call (877) 265-6284 today to schedule your free Muscoy estimate, or fill out our contact form and we’ll call you back to set a walk-through.
Written by Nate Calloway, Owner at Sycamore Contractors, serving Muscoy and the surrounding Inland Empire.