Free 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 own a home in Muscoy, you already know the difference between a contractor who shows up and a contractor who calls back. Penhallow Remodeling is a General Contractor team that works across Muscoy, and we treat every job with one rule: put the price in writing before any work starts. Trevor Nash leads our crews, and he built this company around a simple idea that a handshake is not a contract and a verbal estimate is not a number. Call (936) 259-2607 for a free, written estimate on your kitchen remodel, bathroom remodel, room addition, or whole-home project.
Why Penhallow Remodeling Is Muscoy’s Preferred General Contractor Company
Muscoy homeowners call us after someone else burned them. That is not a marketing line; it is the phone ringing. The pattern is the same: a bid that did not survive demo day, a crew that vanished after the deposit cleared, or a repair that cracked again before the invoice cleared the bank. Our answer is the 365-Day Done Right Promise. If the work fails inside the guarantee period, we come back and fix it at no charge, and that promise sits in writing on every project. We also put the price in writing before any work begins, so the number on day one is the number on the invoice. No allowances that balloon silently. No surprises at the door.
Every technician who walks into your Muscoy home is background-checked and arrives in uniform, so you know exactly who is on your property. And when you call us, a live person answers. Not a voicemail maze, not a callback window. Twenty-four hours a day, seven days a week, a real person picks up the phone. That matters when a permit question hits at 7 a.m. or a framing issue appears on a Saturday.
Construction Company in Muscoy
When you need a construction company in Muscoy, the first thing to understand is that your permit does not come from a city building department. Muscoy is unincorporated, so every permit runs through San Bernardino County Land Use Services. That means a separate fee schedule, different inspection cadences, and a jurisdiction that enforces floodplain rules tied to the Santa Ana River bottom. A contractor who bids Muscoy work as if it were a San Bernardino city job will stall your project by weeks. We have navigated that system enough times to anticipate it at bid time.
Room Additions and Ground Work
A room addition in Muscoy typically runs $45,000 – $130,000 depending on footprint, foundation engineering, and finish level. Because the community sits on Santa Ana River alluvial deposits inside a high-seismic-hazard zone near the San Andreas Fault, most ground-disturbing work requires a soils report and engineered foundation before the County will approve it. We price that into the bid up front, not as a change order later.
Garage Conversions and ADUs
Garage conversions in Muscoy land between $30,000 – $80,000, and an ADU starts around $90,000 – $220,000. These projects trigger the same County permitting path, plus additional requirements if the existing slab was never engineered for habitable space. If the garage was built in the 1950s or 1960s, it probably wasn’t.
Remodeling Contractor in Muscoy
As a remodeling contractor working in Muscoy, the jobs we see are rarely “paint and tile.” They are 1940s-to-1970s wood-frame homes with slab-on-grade foundations, original two-wire electrical, and decades of unpermitted additions hidden behind drywall. When you open a wall, the code upgrades become mandatory before the permit can close. That is the moment most remodel quotes fall apart. Ours do not, because we plan for it.
Kitchen Remodels With an Inspection-First Method
A full kitchen remodel in Muscoy runs $14,000 – $45,000, and a smaller kitchen lands at $9,000 – $20,000. Before we quote the final number, we open the walls or at minimum scope what is behind them. We build allowances into the written contract for the wiring, framing, and waterproofing corrections the County will require once work is exposed. Then we price any surprise as a written change order before touching anything new. On a 1950s slab-on-grade ranch house off Macy Street, our crew opened a kitchen wall and found original two-wire wiring, no seismic bracing, and a subfloor that had been sistered around a prior unpermitted addition. We stopped work, pulled the County permit package, and had the electrician and framing corrections priced as a written change order before any new cabinets went in. Once the rough-in passed inspection, our tech set KraftMaid uppers and a Cambria island. The job closed with a punch list, not a surprise bill.
Bathroom Remodels That Account for Water Damage
A bathroom remodel in Muscoy starts around $9,000 – $28,000, and a small bath runs $5,000 – $12,000. The wild card in older homes is failed waterproofing behind dated tile. We install cement board substrate (the moisture-resistant layer behind your tile) as standard, and we factor the re-pipe or re-wiring the County will flag into the written allowance before demo begins.
Trusted Brands We Service in Muscoy
We stock and install materials from recognized trade brands, because the products behind the guarantee should be as solid as the promise itself. For Muscoy customers, that includes cabinetry from KraftMaid, countertops from Cambria, and fixtures from Kohler. When we spec a Cambria quartz countertop, it carries its own lifetime warranty alongside our 365-Day Done Right Promise, which means two layers of protection on one surface. We keep common parts and material lead times in mind for Muscoy projects, because County inspection schedules do not wait for a backordered cabinet pull.
Common General Contractor Problems We See in Muscoy Homes
- Unpermitted additions that block the new permit. Decades of add-ons were built without County sign-off, and once an inspector sees them, the new permit will not close until the old work is brought up to current code. We include that correction in the written bid rather than springing it on you after demo.
- Slab foundations over alluvial soils. Muscoy sits on Santa Ana River deposits, which drain and settle unevenly. Older slabs crack, and any new work touching the ground almost always triggers a soils report requirement. We schedule that report at bid time, not after the crew has already trenched.
- Thermal expansion from 105°F summers. Inland Empire heat stresses concrete flatwork, stucco, and older wood framing. Exterior work in Muscoy needs materials and joints that tolerate the swing from 105° summer highs to rapid fall Santa Ana moisture cycling.
- Contractors bidding Muscoy jobs from another city. They do not know the County fee schedule or inspection cadence, and their bids miss both. We have run Muscoy permits often enough to price the process, not just the labor.
Pricing for General Contractor in Muscoy, CA
Here is what you can expect to pay for common projects in Muscoy. These are the real ranges we quote, and the final number moves based on what is behind the walls and what the County requires once the work is exposed.
| Project | Typical Muscoy Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Small Kitchen Remodel | $9,000 – $20,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| ADU Construction | $90,000 – $220,000 |
The biggest variable in Muscoy is condition, not taste. A kitchen in a well-maintained 1970s rancher with updated electrical quotes at the low end. A kitchen in a 1948 original with unpermitted add-ons and failed subfloor quotes at the high end, because the County will force corrections before sign-off. We give you a written price before any work starts, with allowances for what we cannot see until the walls open. Call (936) 259-2607 for a free estimate, and we will inspect the home before we write the number.
We Also Serve Cities Near Muscoy
Our crews work across the Inland Empire and the surrounding metro areas. If you are outside Muscoy but still need a General Contractor, we serve Muscoy and nearby communities including Los Angeles, San Diego, San Jose, and San Francisco. Call us to confirm coverage in your neighborhood.
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
Muscoy is unincorporated, so every construction permit is issued by San Bernardino County Land Use Services, not a city building department. That matters because the County has its own fee schedule, inspection cadence, and floodplain rules tied to the Santa Ana River bottom. A contractor who does not know that will bid too low and stall your project by weeks. Call (936) 259-2607 and we will walk you through the exact permit path for your project before you sign anything.
Most Muscoy homes were built between the 1940s and 1970s with original two-wire electrical, no seismic bracing, and decades of unpermitted additions behind drywall. Once a wall opens, the County requires code upgrades before the permit can close, and those corrections add real cost. We handle it by writing allowances into the contract up front and pricing any surprise as a written change order before new work begins.
Yes, in almost every case. Muscoy sits on Santa Ana River alluvial deposits inside a high-seismic-hazard zone near the San Andreas Fault, so San Bernardino County requires a soils report and engineered foundation for most ground-disturbing construction. We schedule that report at bid time and include it in the written price so it never arrives as a surprise. Call (936) 259-2607 for a free estimate that accounts for it.
We inspect before we quote, write allowances into the contract for what we cannot see, and price every discovery as a written change order before we touch it. Our rule is simple: no change order goes forward without your written approval and a written price. The 365-Day Done Right Promise backstops the finished work, and the writing backstops the process.
Muscoy summers regularly exceed 105°F, which accelerates thermal expansion in concrete, stucco, and older wood framing. Fall Santa Ana wind events add rapid moisture cycling and fire-exposure considerations. We spec materials and joints that tolerate that swing, and we never bid exterior work as if Muscoy were a coastal microclimate. Call (936) 259-2607 to discuss your project specifics.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving Muscoy through the Kingswell family of companies. The Kingswell Way since 2004: write the price before the work, show up in the window we gave, and leave the place cleaner than we found it.







Before
After
Before
After
Before
After