ADU Company in Muscoy, CA
Kitchen remodeling in Muscoy usually means working inside a mid-century home on an oversized lot, often with an outdated electrical panel and plumbing that’s been patched together over decades. We’re Sunburst ADU Builders, and we’ve served Muscoy since 2018. Most of our kitchen work here ties directly to ADU construction: either finishing out an ADU’s interior kitchen or upgrading the primary home’s kitchen while we’re already on site. Call (855) 676-6807 to talk through your project.
Why Muscoy Homes Are Different
Muscoy is one of the few unincorporated communities left in San Bernardino County where large lots and a rural, working-class character make ADUs genuinely feasible. But every project runs through San Bernardino County’s unincorporated-area ADU ordinance, not the city of San Bernardino’s. That single fact changes everything about how a project gets permitted, inspected, and built.
The housing stock is predominantly older single-family homes, many from the mid-20th century, sitting on lots that often run half an acre or more. Drive around Muscoy and you’ll see a mix of unpaved or partially paved driveways, older detached garages, and utility infrastructure that hasn’t kept pace with what modern ADU construction demands. Older service panels, septic systems, and aging water lines are common. A detached ADU here frequently triggers septic capacity reviews or utility upgrades that a city-lot ADU in neighboring San Bernardino never faces.
The climate adds another layer. Muscoy sits in the hot, dry inland valley at the base of the San Bernardino Mountains. Summer temperatures routinely climb past 100°F, so ADUs need high-efficiency cooling and thoughtful shading. And when winter rain comes, it can pour off the nearby foothills in a hurry, so drainage design matters more than homeowners expect. These aren’t generic California conditions. They’re Muscoy conditions, and they shape how we spec every project.
Kitchen remodels in Muscoy hit the same realities. Older homes here often lack the electrical capacity for modern appliances, and the dry climate means we plan for ventilation and heat management inside the kitchen itself.
Our Main Muscoy Services
Most Muscoy homeowners reach out to us about two things: building an ADU on their oversized lot, or remodeling a bathroom in an older home. Here’s what each one looks like here.
ADU Builders in Muscoy
Building an ADU in Muscoy means working with the county’s unincorporated-area ordinance, not a city building department. We handle that process start to finish, matching your lot’s specific conditions, whether that’s a septic system capacity review, an older electrical panel upgrade, or drainage design for winter runoff from the foothills. Because Muscoy lots tend to be large, detached ADUs are usually the most practical route, and we can compare prefab, modular, and custom options against your budget and timeline. ADU Builders in Muscoy have to understand county rules, not just construction, and that’s where our experience since 2018 makes a difference.

Bathroom Remodeling in Muscoy
Older Muscoy homes often have bathrooms that were built before modern ventilation standards, and the dry inland heat means trapped moisture turns into a problem fast without proper exhaust. We remodel bathrooms here with that in mind, upgrading plumbing, waterproofing, and ventilation while working around the same aging utility infrastructure that affects ADU projects. Whether it’s a primary home bathroom or finishing out the bathroom inside a new ADU, Bathroom Remodeling in Muscoy means dealing with 60-year-old pipes and undersized service panels as part of the job, not as a surprise discovered mid-project.

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.
Kitchen Remodeling in Muscoy

A kitchen remodel in Muscoy almost always starts with the same discovery: the electrical panel can’t support modern appliances, the plumbing needs significant work, and the original layout wasn’t designed for how people cook today. Most Muscoy homes date from the mid-20th century, which means kitchens were built compact and closed off. Add in the inland valley heat, and ventilation becomes a real functional issue too. We approach every Muscoy kitchen remodel knowing the bones of the house are old and the utility infrastructure needs attention. Our team handles the full scope, from panel upgrades to cabinetry and countertops, which is why many Muscoy homeowners choose us when they’re already planning an ADU on the same lot. Learn more about our Kitchen Remodeling approach or read on for specifics in Muscoy.
Full Kitchen Overhaul
Signs you need it
Your kitchen has the original mid-century layout with cramped walkways, failing cabinets, and appliances that trip breakers or struggle to keep up.
What it costs in Muscoy
A full kitchen overhaul in Muscoy typically runs $18,000 to $48,000 depending on cabinet quality, countertop material, and how much electrical and plumbing work the house needs.
How we do it
We start with a full assessment of the existing electrical panel, water lines, and ventilation, then demo, rebuild the layout, install new cabinetry and counters, and finish with appliance installation and a county-approved final inspection.
Kitchen Renovation for Aging Homes
Signs you need it
Your kitchen works but it’s tired, with worn surfaces, dated fixtures, and layout inefficiencies, and you want to update it before tackling an ADU or other major project.
What it costs in Muscoy
A mid-range kitchen renovation on an older Muscoy home usually lands between $12,000 and $30,000 when we’re replacing surfaces and fixtures but keeping the existing footprint.
How we do it
We refinish or replace cabinet fronts, install new countertops and a backsplash, swap out the sink and faucet, update lighting, and make targeted electrical upgrades so the space functions for another 20 years.
What Kitchen Remodeling Costs in Muscoy
| Item | Typical range in Muscoy |
|---|---|
| Full kitchen overhaul | $18,000 – $48,000 |
| Kitchen renovation for aging homes | $12,000 – $30,000 |
| Cabinet refacing and surface updates | $6,000 – $14,000 |
Will a kitchen remodel in Muscoy require an electrical panel upgrade?
Most likely. Older Muscoy homes typically have 60-amp or 100-amp panels, and modern kitchens need more capacity for appliances, lighting, and ventilation. We include any required panel work in our quote before we start.
How long does a kitchen remodel take in Muscoy?
A full kitchen overhaul usually takes 4 to 8 weeks depending on the extent of electrical and plumbing work and county inspection scheduling. We give you a written timeline at the quote stage. Call (855) 676-6807 for a free estimate tailored to your home.
Brands We Service in Muscoy
We work across multiple prefab and modular ADU platforms, including Boxabl, Mighty Buildings, and Plant Prefab, plus Tuff Shed for conversion projects. Our team has hands-on experience with each brand’s engineering and installation requirements. If you’re comparing manufacturers, see our brands page to understand the trade-offs between cost, timeline, and build method.
Pricing for ADU Company in Muscoy, CA
| Service | Typical range in Muscoy |
|---|---|
| Full kitchen overhaul | $18,000 – $48,000 |
| Kitchen renovation for aging homes | $12,000 – $30,000 |
| Cabinet refacing and surface updates | $6,000 – $14,000 |
What pushes prices up in Muscoy is the age of the housing stock. Older electrical panels, original plumbing, and septic system reviews for detached ADUs all add cost that a newer city-lot home wouldn’t face. We give you a written line-item quote before any work starts, so you’ll know exactly what you’re paying and why. No change orders, no surprises.
Neighborhoods We Serve in Muscoy
Muscoy covers ZIP code 92405, a spread-out unincorporated area where lots are large and streets can feel more rural than suburban. Our crews work throughout the community regularly, and because we’ve been here since 2018, we know the specific permit and utility realities of each area.
- Central Muscoy
- North Muscoy near the foothills
- South Muscoy along the railroad corridor
- East Muscoy toward the Lytle Creek wash
We generally respond to new project inquiries in this area within one business day.
Service Area – Cities Near Muscoy
While Muscoy is our focus for this page, our ADU and remodeling work also takes us into San Bernardino, CA, Rialto, CA, and Highland, CA. For homeowners up in the mountains, we also serve Crestline, CA, where build conditions are different but the same permitting principles apply.
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 ADU Company in Muscoy
Yes. Muscoy is unincorporated, so San Bernardino County oversees all permits and inspections, including ADU ordinance compliance, electrical, plumbing, and structural work. We handle the county permitting process for every project and make sure inspections are scheduled and passed. Call (855) 676-6807 with questions about your specific lot.
They can be. A sizable share of Muscoy properties are on septic systems, and a detached ADU often triggers a septic capacity review from the county. If the system can’t handle the added load, an upgrade may be required. We evaluate this early so you’re not surprised later.
We typically schedule initial consultations within one business day and can provide a written estimate shortly after visiting your property. The county permitting timeline is what it is, but we keep projects moving by submitting complete applications the first time. Call (855) 676-6807 to get on the schedule.
What happens when you call
- 1A real person answersNo phone trees — talk to a local adu 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
"Every invoice was tied to a completed milestone, so I always knew what I was paying for."
— Henry Kim"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Hector Torres"Unit came out great and the tenant is happy. The timeline ran long, largely because of how slow the city was on plan check, though a couple of the delays were scheduling on their end."
— Jodi Reed