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
If you’re planning a home addition, ADU, or major remodel on a Los Serranos property, expect the permitting and site work to look different than it does a few miles north. The county, not the city, controls grading and fire-hardening requirements along the canyon edges, and that changes both pricing and scope before a single wall goes up. We’re Moreno Valley Builders, and we’ve worked the Carbon Canyon and Soquel Canyon corridors long enough to know exactly what Los Serranos inspectors look for. Call (877) 752-3154 to talk through your project with us.
Key Takeaways:
- Los Serranos sits in unincorporated county territory (ZIP 91709), so ADUs, shops, and hillside grading pull county permits with WUI fire code overlays.
- A home addition in Los Serranos runs $45,000 – $130,000; an ADU typically lands between $90,000 and $220,000 depending on site prep and material selection.
- Full-scope general contracting means one team handles permits, grading, framing, finishes, and the final punch list.
- We specify brands like Belgard, Unilock, and KraftMaid because canyon-edge lots need materials that survive heat, slope, and inspection.
Why Moreno Valley Builders Is Los Serranos’s Preferred General Contractor Company
Los Serranos homeowners tend to ask sharper questions than most, because building on acreage in unincorporated county land leaves no room for vague answers. We’ve learned this the hard way, in the best sense: every quote we give for a Los Serranos project accounts for county grading review, WUI exterior requirements, and access for equipment on long driveways or open lots. That level of pre-scoping prevents the stop-work orders and change orders that plague underprepared contractors out here.
What we hear from Los Serranos customers is that they wanted a single accountable company, not a rotating cast of subs. That’s how we operate. One project manager coordinates the permitting, the grading crew, the framers, the cabinet installer, and the final inspection walkthrough. You’re not chasing five different phone numbers.
Led by Noel Trevino, our team has built detached ADUs, workshops, additions, and full exterior transformations across Los Serranos. We know the local inspectors, we know what the county asks for on slope drainage, and we know which material choices pass final sign-off the first time. That’s not marketing language. It’s pattern recognition from doing the work.
Call (877) 752-3154 and tell us what you’re planning. We’ll tell you straight what it’ll take.
Styles & brands we work with
Licensed General Contractor in Los Serranos
A Licensed General Contractor in Los Serranos handles the entire build, from county permit submittal through final inspection and punch list. This is especially important on the semi-rural lots along Carbon Canyon and Soquel Canyon, where site work often involves hillside grading, retaining walls, drainage swales, and fire-resistant exterior details that a specialty trade won’t touch. Home additions here run $45,000 – $130,000. A detached ADU typically lands at $90,000 – $220,000. The spread is wide because some lots need $20,000 of grading before framing starts, while others are nearly flat and ready to dig.
County Permits and Hillside Grading
In Los Serranos, grading and drainage fall under county jurisdiction. That means engineered plans for slopes, swales, and retaining walls, plus erosion control during construction. We scope all of this before quoting so the price you see is the price you get.
WUI Fire-Hardening on Canyon-Edge Lots
Wildland-urban interface codes apply to most Los Serranos parcels that sit against the Chino Hills State Park boundary. Noncombustible roofing, fire-resistant siding, and ember-proof vents are often required, not optional. We specify materials that pass inspection and still give you the look you want.
Residential General Contractor in Los Serranos
A Residential General Contractor in Los Serranos manages the full scope of work on your home, whether that’s a kitchen remodel, a garage conversion, or a new detached structure. The housing stock here is a mix of older ranch-style homes, custom builds on generous lots, and some equestrian properties, so nearly every project involves more than surface finishes. We regularly see additions, barn-to-workshop conversions, and site work that would never come up in a tract-home subdivision. The job involves coordinating permits, trade crews, material deliveries, and inspections, all on your timeline and budget.
Detached Structures and ADUs on Rural Parcels
Los Serranos lots often have room for a second structure, and that’s where a true general contractor earns the fee. Whether it’s an ADU at $90,000 – $220,000 or a garage conversion at $30,000 – $80,000, we coordinate the foundation, utilities, fire requirements, and finishes under one roof.
Full-Scope Remodels on Older Ranch Homes
Many Los Serranos homes date back decades and need structural upgrades, not just cosmetic work. A kitchen remodel in the area runs $14,000 – $45,000, and a bathroom remodel $9,000 – $28,000, but the numbers shift when we’re also correcting framing, relocating plumbing, or bringing electrical up to current code.
Trusted Brands We Service in Los Serranos
We don’t bid a job and then hand you whatever material is cheapest that week. For hardscape on Los Serranos properties, we specify Belgard and Unilock pavers because they hold up to hot dry summers and hold their color on south-facing slopes. For paver driveways and patios, we also work with Tremron and ActiveYards when the design calls for a specific texture or structural rating. Since many Los Serranos projects involve exterior surfaces, we keep a tight supply line for these brands so material availability doesn’t stall your build. You pick the product. We handle the sourcing, delivery, and install.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Los Serranos Homes
- Stop-work orders from unpermitted grading. We’ve seen hillside projects shut down because a previous contractor moved dirt without county approval. The owner then pays for engineered plans and rework before construction resumes. We pull the grading permits before equipment rolls.
- WUI code failures on roofing and siding. Canyon-edge parcels get flagged at inspection for combustible materials. Noncombustible roofing and fire-resistant siding are code on many Los Serranos lots, not upgrade options. We spec them from day one.
- Long material hauls causing schedule overruns. Los Serranos sits far enough from major supply yards that poor logistics add days to a project. We plan deliveries in consolidated loads and stage materials on-site to keep crews moving.
- Slope drainage ignored until winter. Dry-season construction that skips proper swales and erosion control turns into mud and washouts after the first heavy rain. On hillside lots, drainage gets designed before the foundation does.
Pricing for General Contractor in Los Serranos, CA
Pricing in Los Serranos reflects the site more than the structure. A flat lot with easy access prices differently than a canyon-edge parcel with 30-degree slopes and county grading review. Here are the ranges we quote most often:
| Project | Los Serranos Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
| Roof Replacement | $8,000 – $20,000 |
What moves the number most is grading and WUI compliance. A detached ADU with a simple slab and asphalt shingle roof lands at the lower end. An ADU on a slope requiring engineered retaining walls, a drainage swale, and noncombustible roofing trends toward the top. We quote free, in writing, and by line item, so you can see exactly where the money goes. Call (877) 752-3154 for your free estimate.
We Also Serve Cities Near Los Serranos
Our crews work throughout the surrounding foothill communities, not just Los Serranos. You’ll find us on projects in Chino, Yorba Linda, Montclair, and Pomona. If you’re outside the immediate area, ask about scheduling. For the full picture, see General Contractor services and our local work as a General Contractor in Los Serranos.
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
Yes, nearly every ADU, detached shop, and significant addition in Los Serranos requires county permits, including grading and drainage review if your lot has slope or runs against a canyon edge. Skipping permits leads to stop-work orders, failed inspections, and a harder resale down the line. We handle the full permit package before any construction starts, and we’ve been through enough Los Serranos county reviews to know what gets flagged. Call (877) 752-3154 to talk about your specific parcel.
Wildland-urban interface codes on canyon-edge Los Serranos lots require noncombustible roofing, fire-resistant siding, and ember-resistant vents, especially on homes backing up to Chino Hills State Park. These aren’t optional upgrades if the county classifies your property in a fire hazard severity zone. We spec compliant materials from the first drawing, so you don’t get hit with a failed inspection and a redo at the end. We can tell you whether your specific address triggers WUI requirements during the first call.
Site preparation, almost always. Grading, retaining walls, drainage swales, and long utility runs on acreage routinely add $15,000 to $40,000 or more before framing begins. Flat tract lots elsewhere never see these costs, which is why generic online pricing rarely matches Los Serranos reality. We scope the site first, then price the structure, so your quote reflects the actual ground conditions. Call (877) 752-3154 for a line-item breakdown.
Yes, hillside drainage, engineered swales, and retaining walls are core parts of our Los Serranos work. Along the Carbon Canyon corridor, we built a detached ADU and workshop on a sloping lot where the county required an engineered drainage swale and WUI-compliant roofing. Our crew used KraftMaid cabinets and Moen fixtures after passing rough-in and inspection sign-off, finishing with a punch list that included fire-resistant siding touch-ups. We manage the engineering, the county review, and the construction as one scope. Call (877) 752-3154 to discuss your slope.
We put everything in writing before work starts: line-item pricing, material specifications, permit responsibility, and a clear scope of work that includes site prep and WUI compliance. No verbal side agreements, no vague allowances. On county-permitted Los Serranos jobs, change orders happen only when you ask for a change, not because we forgot to price the grading. That discipline is what keeps a canyon-edge build on schedule and on budget. Call (877) 752-3154 to start with a fixed, written quote.
Written by Noel Trevino, Owner at Moreno Valley Builders, serving Los Serranos and the surrounding foothill communities.