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 Los Serranos
Planning a remodel or addition in Los Serranos means dealing with something most homeowners in Chino Hills or Yorba Linda never face: San Bernardino County’s building and fire reviews, plus Hillside/Environmental constraints, before a permit is ever issued. We know those rules cold. Stallion Contractors handles the pre-application coordination, the permit package, and every trade from foundation to roofline so you don’t chase approvals while your project sits idle. If you want one contractor who manages the entire scope in Los Serranos, call us at (855) 600-3192 for a free estimate.

Why Stallion Contractors Is Los Serranos’s Preferred General Contractor Company
Los Serranos homeowners call us because we already understand what the County will require on their specific parcel. We’ve pulled permits for hillside additions off Los Serranos Road, coordinated fire-clearance reviews for canyon-edge properties, and opened enough mid-century ranch walls to know exactly what’s behind them. Customers keep telling us the same thing: the pre-application work we do before a single permit is filed saves them weeks of back-and-forth with County Land Use Services.
Ruben Montoya built Stallion Contractors around a simple idea. One contract. Every trade. When a Los Serranos homeowner hires us, they aren’t juggling a tile guy, a roofer, and a window installer who all blame each other when something goes sideways. Our General Contractor team manages the whole scope, from Cambria countertops in the kitchen to a GAF roof overhead and James Hardie siding on the exterior. The accountability sits with us, not scattered across four subcontractors.
Our response time to Los Serranos is shaped by distance and demand, but we schedule site visits around your calendar, not our convenience. Estimate appointments are free, and we show up with a scope of work that already accounts for the County reviews your project will trigger.
Styles & brands we work with







Remodeling Contractor in Los Serranos
A Remodeling Contractor in Los Serranos has to handle what older homes actually conceal once the drywall comes down. The housing stock here runs from mid-century ranch homes and equestrian properties on larger lots to newer infill and hillside custom builds. That means projects routinely involve foundation retrofits, additions, and grading rather than simple tract-home replacements. A kitchen remodel in Los Serranos typically runs $14,000 to $45,000, a bathroom remodel $9,000 to $28,000, and a home addition $45,000 to $130,000.
Hillside and Fire-Zone Remodels
Canyon-edge properties and hillside parcels in the 91709 zip code trigger fire-clearance and defensible-space reviews that flat-land remodels in Chino Hills never see. We bring grading and fire-clearance plans to the first counter visit, which is the difference between a permit that moves and one that stalls.
Mid-Century Ranch Open-Wall Surprises
On a mid-century ranch home off Los Serranos Road, our crew opened a kitchen wall to find cloth-wrapped wiring and undersized framing that failed load-bearing checks. We had written allowances for rough-in upgrades and a framing repair into the contract, so when the inspection sign-off flagged the issues, we priced and approved the change order in writing before touching another stud. That’s how it should work everywhere, but it’s essential in an unincorporated community where the County’s reviewers are strict about what gets signed off.
Licensed General Contractor in Los Serranos
A Licensed General Contractor in Los Serranos carries the responsibility of navigating San Bernardino County’s pre-application requirements on top of the actual construction. That dual job is why we exist. We’re licensed, insured, and bonded, and we’ve structured our entire process around what the County will ask for before it issues a permit: grading plans, fire-clearance documentation, defensible-space review on canyon-edge parcels, and Hillside/Environmental constraints. A typical home addition in Los Serranos runs $45,000 to $130,000, while an ADU runs $90,000 to $220,000.
Pre-Application Coordination
Contractors working here learn that a standard County over-the-counter permit can stall when the parcel touches a hillside or fire hazard zone. The workaround is simple but non-negotiable: bring grading and fire-clearance plans to the first counter visit. We do that on every applicable project, so the permit review doesn’t dead-end in a request for documents you didn’t know you needed.
Change Order Discipline
When a wall opens and the wiring is cloth-wrapped or the framing is undersized, the worst thing a contractor can do is push forward silently and bill you later. We write allowances into the contract up front. Every surprise gets priced and approved in writing before we touch another stud.

Trusted Brands We Service in Los Serranos
Stallion Contractors has access to more than 50 vetted, trade-grade brand partners, which means you aren’t limited to whatever the local supply house happens to stock. For Los Serranos homeowners, that translates to Cambria or Silestone countertops, Kohler or Toto plumbing fixtures, GAF or CertainTeed roofing, and James Hardie siding. We also work with forward-thinking ADU and prefab partners like Abodu, Dvele, and Cover, which opens options beyond traditional stick-built additions. Pro-grade materials, professionally installed. That’s the standard.
Common General Contractor Problems We See in Los Serranos Homes
- County review stalls on hillside and fire-zone parcels. A remodel that would sail through in Chino Hills or Yorba Linda can sit for weeks if the pre-application coordination wasn’t done. Grading and fire-clearance plans need to be in hand before the first counter visit.
- Open-wall surprises on mid-century ranch homes. Cloth-wrapped wiring, undersized framing, and failed waterproofing are common in Los Serranos homes built in the 1950s through 1970s. If the contract has no allowances, the change order becomes a shock instead of a line item.
- Fire-resistant assembly requirements on canyon-edge properties. Hot inland summers, Santa Ana wind events, and seasonal wildfire risk mean the County requires fire-resistant exterior assemblies and defensible-space clearing. Skipping that review delays inspection sign-off and the final punch list.
- Foundation and grading issues on equestrian lots. Larger lots with older foundations often need retrofits before an addition can be approved. Bidding without accounting for grading work produces a number that won’t survive the permit review.
See the difference
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AfterPricing for General Contractor in Los Serranos, CA
Here’s what you should expect for a Los Serranos project, based on the scope and the condition of your home:
| Project | Typical Los Serranos Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
The largest cost driver in Los Serranos is what the walls and foundation reveal once work starts. A home that needs a framing repair, rough-in upgrade for electrical, or foundation retrofit will land at the higher end of these ranges. That’s why we write allowances into every contract. You’ll know the number before we open a wall, and any change gets priced and approved in writing. Call (855) 600-3192 to schedule a free estimate, and we’ll walk your property with the County requirements already in mind.
We Also Serve Cities Near Los Serranos
Stallion Contractors serves Los Serranos and the surrounding communities, including Chino, Yorba Linda, Montclair, and Pomona. If you’re comparing contractors across the area, understand this: a General Contractor in Los Serranos who works in Chino Hills or Yorba Linda regularly may not know the unincorporated County requirements that apply to your parcel. We do.
Serving Los Serranos, CA — Our Local Coverage Area
We’re based in the Los Serranos 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 Los Serranos
Because Los Serranos is unincorporated, every remodel that touches a hillside parcel or fire hazard zone must clear San Bernardino County building and fire review, plus Hillside/Environmental constraints, before a permit is issued. Chino Hills and Yorba Linda have their own municipal processes that don’t include those County-level reviews. Call (855) 600-3192 if you want us to handle the pre-application work for you.
Cloth-wrapped wiring, undersized or damaged framing, and failed waterproofing are the most common findings in Los Serranos homes built between the 1950s and 1970s. We write allowances into the contract so these discoveries become approved line items instead of surprise change orders. Call (855) 600-3192 for an exact quote on your remodel.
Every change order gets priced and approved in writing before we touch another stud. We carry allowances in the scope of work from day one, so when a wall opens and reveals something the County will flag, you already know the framework for the cost. Call (855) 600-3192 to discuss your addition.
We specify fire-resistant exterior assemblies and defensible-space clearing that meet San Bernardino County’s wildfire-zone requirements, using materials like James Hardie siding and fire-rated roofing systems from GAF or CertainTeed. The County’s fire review is non-negotiable, so we build it into the plan from the start. Call (855) 600-3192 for a free estimate.
Sometimes, but not when the parcel touches a hillside or fire hazard zone. Those projects need grading and fire-clearance plans reviewed before the permit is issued. We bring those documents to the first counter visit so the permit doesn’t stall. Call (855) 600-3192 and we’ll tell you exactly what your parcel will trigger.
Get Your Los Serranos Project Started Right
Whether you’re planning a kitchen remodel, a bathroom overhaul, a room addition, or an ADU in Los Serranos, the County requirements and the age of your home will shape everything. Don’t bid the project blind. Call Stallion Contractors at (855) 600-3192 and we’ll walk the property, identify what the permit review will demand, and give you a written estimate that accounts for it. Your project managed start to finish, built to the standard your home deserves.
Written by Ruben Montoya, Owner at Stallion Contractors, serving Los Serranos and the surrounding communities.