ADU Company in Los Serranos, CA
Kitchen remodeling in Los Serranos means working with mid-century and late-20th-century homes on generous foothill lots, where original layouts were built for a different era of cooking and gathering. We’re Manzanita ADU Builders, and we handle everything from full kitchen teardowns to cabinet refacing, with single-contractor scope that carries through to the bathroom, the ADU, or the exterior. The Chino Hills foothills give many Los Serranos kitchens a distinctive challenge: sloped rear yards and terraced foundations that make layout changes more involved than a simple swap-out. Call (833) 467-4140 to talk through your kitchen with someone who knows this community’s housing stock.
Why Los Serranos Homes Are Different
Los Serranos sits as an unincorporated Chino Hills-area community in San Bernardino County. That means ADU projects and most property improvements run through San Bernardino County Land Use Services rather than a city building department. County setback, height, and parking standards apply, and state ADU law layers on top. For homeowners, the practical effect is a plan check process that often moves differently than in nearby incorporated cities like Chino or Pomona.
The housing stock is dominated by mid-to-late 20th-century single-family homes on generous suburban lots along the Chino Hills foothills. Many rear yards climb or terrace, which means detached ADUs frequently trigger retaining wall and grading review. Hot inland summers with Santa Ana wind events push sensible design toward deep roof overhangs, reflective roofing, and zoned mini-split HVAC. Winter nighttime lows in the foothills make real insulation non-negotiable in any converted garage. When we plan an ADU or a kitchen extension here, we account for all of that before the first drawing goes to the county.
Our Main Los Serranos Services
Los Serranos homeowners call us most often about two things: building an ADU on a sloped or terraced lot, and remodeling a bathroom in one of the area’s aging single-family homes. Here’s what each involves here.
ADU Builders in Los Serranos
Building an ADU in Los Serranos means designing for San Bernardino County plan check, where rear-lot slopes often require a grading plan and slope-stability review before approval. We work across the full spectrum: Tuff Shed-based studio conversions at the accessible end, Mighty Buildings and Boxabl panelized systems in the middle, and Plant Prefab’s sustainability-focused modular builds at the premium end. From foundation to finished kitchen, one team handles it. For a full look at how we approach ADUs in this specific unincorporated territory, see ADU Builders in Los Serranos.
Bathroom Remodeling in Los Serranos
Bathrooms in Los Serranos homes often sit in the original footprint from the 1960s through 1980s, with cast-iron plumbing, small windows, and layouts that predate modern ventilation needs and accessibility expectations. Hot summers and Santa Ana gusts mean exhaust fan upgrades and moisture control get real attention here. We handle the full remodel, from waterproofing and tile work to fixture selection. Details on what that looks like are on Bathroom Remodeling in Los Serranos.
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 Los Serranos
Kitchen remodeling in Los Serranos typically means opening up a closed-off mid-century floor plan or replacing worn cabinetry and counters in a home built between the 1960s and 1990s. The foothill setting adds a layer: many kitchens sit against a sloped rear yard, so any expansion or window change needs to account for existing retaining walls and drainage. Our Kitchen Remodeling work here starts with that lot reality, not a catalog photo.
Full Kitchen Renovation
Signs you need it
Your kitchen has the original layout, cabinets, or flooring from the home’s construction era, and the space no longer supports how your household cooks, eats, or gathers.
What it costs in Los Serranos
A full kitchen renovation in Los Serranos typically runs $35,000 to $75,000, depending on cabinet grade, countertop material, and whether walls or plumbing move.
How we do it
We strip the space to framing, address any subfloor or moisture issues common in these foothill homes, then rebuild with new cabinetry, counters, flooring, lighting, and appliances in one coordinated sequence.
Kitchen Peninsula or Island Addition
Signs you need it
Your kitchen has the square footage for an island or peninsula but not the current layout, or you want better separation between cooking and seating areas.
What it costs in Los Serranos
Expect $8,000 to $20,000 for a peninsula or island addition in Los Serranos, including structural support, electrical rough-in, countertop fabrication, and finish plumbing if a sink is included.
How we do it
We verify the floor system can carry the added load, run new electrical and plumbing as needed, then set cabinets, stone or quartz tops, and fixture trim in one pass.
Countertop and Backsplash Replacement
Signs you need it
Counters are chipped, stained, or dated laminate from the original build, and the backsplash no longer protects the wall or matches how you use the kitchen.
What it costs in Los Serranos
Countertop and backsplash replacement in Los Serranos usually falls between $4,000 and $12,000, depending on surface area and material choice like quartz, granite, or porcelain slab.
How we do it
We template the existing runs precisely, remove old surfaces without damaging adjacent cabinets, then install new tops and tile with sealed seams and clean caulk lines.
What Kitchen Remodeling Costs in Los Serranos
| Item | Typical range in Los Serranos |
|---|---|
| Full kitchen renovation | $35,000 – $75,000 |
| Peninsula or island addition | $8,000 – $20,000 |
| Countertop and backsplash replacement | $4,000 – $12,000 |
How long does a kitchen remodel take in Los Serranos?
A full kitchen remodel in Los Serranos typically takes 6 to 10 weeks. County plan check for structural changes can add 2 to 4 weeks before demolition starts.
Will the price change once work starts?
No. We quote fixed pricing with no change orders unless you add scope. If county review flags a slope or drainage issue, we address it before construction begins so the number stays real.
Brands We Service in Los Serranos
We work with Mighty Buildings and Boxabl panelized systems, Plant Prefab’s modular designs, and Tuff Shed-based studio conversions. For Los Serranos lots with slope or grading constraints, panelized and modular options often mean fewer foundation surprises. See our brands for the full comparison.
Pricing for ADU Company in Los Serranos, CA
| Service | Typical range in Los Serranos |
|---|---|
| Full kitchen renovation | $35,000 – $75,000 |
| Kitchen peninsula or island addition | $8,000 – $20,000 |
| Countertop and backsplash replacement | $4,000 – $12,000 |
Los Serranos prices climb when the rear yard slopes enough to require retaining wall work or a grading plan, and when county plan check adds review time for structural changes. We quote fixed pricing with no change orders, so the number you approve is the number you pay.
Neighborhoods We Serve in Los Serranos
We work throughout the Los Serranos community and the surrounding Chino Hills foothills, including the pockets of older custom homes and newer infill along the area’s main corridors.
- Los Serranos proper
- Foothill corridor homes east of Chino Hills
- Rural residential lots near Butterfield Ranch
- Homes along the 71 corridor
- Adjacent Chino foothill neighborhoods
Most Los Serranos homes are within a 20-minute drive of our Stanton base, so estimates and site visits can usually be scheduled within a few days.
Service Area – Cities Near Los Serranos
Our team serves Los Serranos and the surrounding communities across the San Bernardino and Orange County line. Chino, CA sits directly to the east with similar foothill terrain. Yorba Linda, CA and Brea, CA are a short drive southwest into Orange County, while Pomona, CA borders Los Serranos to the northwest. If your property is near any of these boundaries, we can help.
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 ADU Company in Los Serranos
We can usually be on-site in Los Serranos within a few days for an estimate or site visit. Construction scheduling depends on county plan check timing and current workload, but we’ll give you a clear start window before you sign anything.
Yes. Because Los Serranos is unincorporated San Bernardino County, projects run through San Bernardino County Land Use Services, not a city building department. Structural changes, grading, and slope-stability review may all factor into approval. We handle county submittals and inspections as part of the job.
We often combine an ADU with a main-house kitchen or bathroom remodel under one contract. That keeps subs coordinated, reduces mobilization costs, and means one team manages the whole property from start to finish.
Ready to price out your kitchen remodel or ADU in Los Serranos? Call (833) 467-4140 to schedule a free estimate with Manzanita ADU Builders. We’ll walk your lot, talk through what makes sense for your home and the county rules, and give you a written line-item quote.
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 Los Serranos Customers Say
"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."
— Jason Parker"The kitchenette layout he suggested made better use of the space than the one on our original sketch."
— Javier Morales"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Divya Mehta