ADU Company in Los Serranos, CA
Kitchen remodeling in Los Serranos usually means working inside a 1970s – 1990s ranch or two-story home on a generous, often sloped lot near the Chino Hills State Park boundary, where the original layouts haven’t kept up with how families live now. The older floor plans common here have small, closed-off kitchens with dated electrical and plumbing, but the houses themselves sit on parcels big enough to rework thoughtfully. We handle the full kitchen scope for Los Serranos homeowners, from layout changes and cabinet replacement to finishes, appliances, and the permits San Bernardino County requires for anything structural. Call (855) 617-6356 to talk through what your kitchen could be.
Why Los Serranos Homes Are Different
Los Serranos is a small, unincorporated Chino Hills-area community where county rules, not city rules, govern building permits. That matters for any kitchen project that moves a wall, adds a window, or changes plumbing. The permit path runs through San Bernardino County’s unincorporated-area review, which is a different process than what neighbors in incorporated Chino Hills face a few minutes away. We know what the county reviewers look for, and we file plans that clear the first time more often than not.
The housing stock here is mostly single-family homes built between the 1970s and 1990s. Many have block walls, RV access, and older detached garages. Inside, kitchens from that era tend to have fluorescent box lighting, dated laminate counters, and layouts that cut the cook off from the rest of the house. Because lots in Los Serranos are larger than what you find in denser parts of Chino, there’s usually room to expand a kitchen outward or reconfigure the footprint without fighting for inches. Some homes back onto the state park edge, which shapes window placement and ventilation choices – you’ll want the view, but also the fire-resistant materials and proper clearances that hillside sites demand. The inland foothill climate also pushes material selection: hot, dry summers with Santa Ana winds mean finishes and fixtures need to hold up to heat and fine dust, and winter rain on graded lots means any exterior kitchen wall work needs real drainage planning.
Our Main Los Serranos Services
Los Serranos homeowners most often call us about two things: building an accessory dwelling unit on one of the area’s larger lots, and bringing a dated bathroom up to modern condition. Both jobs run through the same county permit process and both benefit from knowing how hillside lots and older homes in this community behave.
ADU Builders in Los Serranos
Detached ADUs make particular sense in Los Serranos because so many parcels have the room for one, whether it’s a backyard unit, a garage conversion, or a Tuff Shed conversion that keeps costs down. The wrinkle here is the dual review path: county unincorporated-area rules plus hillside and grading scrutiny when the lot backs toward Chino Hills State Park. We’ve worked that process enough to know where the sticking points are before they become delays. ADU Builders in Los Serranos covers what’s possible on your lot.
Bathroom Remodeling in Los Serranos
Many Los Serranos bathrooms are original to homes built in the 1970s through 1990s, which means failing grout, tired vanities, and layouts that don’t serve a growing household. We handle the full remodel, including the plumbing runs and venting updates that county inspectors want to see. Because these homes sit on generous lots, we can often rework a bathroom footprint without touching the home’s exterior walls. Bathroom Remodeling in Los Serranos walks through the typical scope and costs.
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 costs between $25,000 and $75,000 depending on whether you’re refreshing surfaces in place or tearing down walls and moving plumbing, and most projects run 6 to 10 weeks from permit to final walkthrough. Because so many homes here were built in the 1970s – 1990s, the work usually starts with correcting cramped layouts and bringing electrical up to current code for modern appliance loads. We’re a full-service Kitchen Remodeling contractor, which means one team handles the plan, the county permit, the build, and the finishes.
Cabinet Replacement
Signs you need it
Cabinet doors are warped, hinges are failing, or the current layout forces you to work around blind corners and dead space every day.
What it costs in Los Serranos
Cabinet replacement in Los Serranos generally runs $12,000 to $40,000 depending on cabinet grade, linear footage, and whether we’re keeping the existing footprint or reconfiguring it.
How we do it
We measure the full kitchen, order the cabinet run, then remove old boxes, adjust or level walls, install new cabinets, and set doors and hardware for a square, solid fit.
Countertop and Backsplash Work
Signs you need it
Laminate or tile counters from the original build are chipped, burned, stained, or just impossible to keep clean, and the backsplash doesn’t match how you use the kitchen now.
What it costs in Los Serranos
Countertop and backsplash replacement in Los Serranos typically lands between $4,000 and $12,000 depending on material and square footage.
How we do it
We template the counters, cut and install the slab or stone, then set the backsplash with a clean line at the counter and behind the range.
What Kitchen Remodeling Costs in Los Serranos
| Item | Typical range in Los Serranos |
|---|---|
| Full kitchen remodel | $25,000 – $75,000 |
| Cabinet replacement | $12,000 – $40,000 |
| Countertop and backsplash | $4,000 – $12,000 |
What pushes a Los Serranos kitchen toward the top of the range is structural work: removing a load-bearing wall, relocating plumbing, or adding square footage. Hillside lots near the state park edge can also add grading and drainage requirements to exterior wall changes. We give you a written, line-item price before work starts, and we don’t change it on you mid-job.
How long does a kitchen remodel take in Los Serranos?
Most full kitchen remodels in Los Serranos run 6 to 10 weeks. The county permit process adds time at the front end, especially if we’re moving walls or plumbing, so we factor that in when we set your schedule. Call (855) 617-6356 for a timeline based on your actual scope.
Will my Los Serranos kitchen remodel need a county permit?
Yes, if the work moves plumbing, electrical, or walls. San Bernardino County reviews unincorporated-area projects like those in Los Serranos, and we prepare and pull the permits as part of the job. Call (855) 617-6356 for an exact quote, estimates are free.
Brands We Service in Los Serranos
We work across the ADU construction spectrum, including units from Cover, Dvele, and Boxabl, plus Tuff Shed conversions for a lower-cost path. James Hardie fiber cement exteriors are a common spec on our Los Serranos jobs because they hold up to foothill heat and fire exposure. See the full list on our brands page.
Pricing for ADU Company in Los Serranos, CA
| Service | Typical range in Los Serranos |
|---|---|
| Full kitchen remodel | $25,000 – $75,000 |
| Cabinet replacement | $12,000 – $40,000 |
| Countertop and backsplash | $4,000 – $12,000 |
| Prefab ADU (all-in) | $100,000 – $300,000+ |
| Modular ADU (all-in) | $150,000 – $350,000+ |
| Site-built ADU | $250 – $500+ per sq ft |
| Garage conversion ADU | $80,000 – $200,000+ |
| Tuff Shed conversion ADU | $50,000 – $120,000+ |
| Bathroom remodel | $15,000 – $35,000 |
| Small bathroom or powder room | $10,000 – $18,000 |
In Los Serranos, costs climb when the lot slopes toward the state park boundary and we need retaining walls, deeper footings, or fire-defensible-space siting. County grading review can also add engineering hours. The price we quote is the price you’ll pay; we don’t write change orders for surprises we should have seen coming.
Neighborhoods We Serve in Los Serranos
We work throughout the 91709 ZIP, from the streets off Pipeline Avenue to the parcels backing the Chino Hills State Park edge. Typical response time for estimates in Los Serranos is one to two business days, depending on our current schedule.
- Los Serranos proper, along Pipeline Avenue
- Parcels bordering Chino Hills State Park
- Neighborhoods off Butterfield Ranch Road
- Homes near the Chino Hills city line
- County pockets between Chino and Chino Hills
Service Area – Cities Near Los Serranos
We also serve homeowners in Chino, CA, just south across the city line, and Yorba Linda, CA, where larger lots create similar ADU opportunities. To the east, Montclair, CA has a different housing stock but the same county-level permit awareness, and Pomona, CA brings its own planning rules. If you’re near Los Serranos but not in it, call and we’ll confirm coverage.
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
Yes. Los Serranos is unincorporated, so San Bernardino County handles building permits, and hillside lots near Chino Hills State Park may also trigger grading and fire-defensible-space review. We handle the permit package and county submittal as part of your project. Call (855) 617-6356 to start.
Prefab and modular ADUs can finish in 6 to 10 months after permits, site-built ADUs often run 10 to 14 months, and Tuff Shed conversions sometimes move faster than garage conversions. County hillside review can add weeks on lots backing the park. Call (855) 617-6356 for a realistic timeline on your parcel.
Yes. Sloped lots are common in parts of Los Serranos, and we plan for retaining walls, drainage, and fire-defensible-space siting from the first site visit. The design drivers change on these parcels, but the project is still very doable. Call (855) 617-6356 for a free estimate on your specific lot.
Call Holloway ADU Builders at (855) 617-6356 to schedule a free estimate for your Los Serranos kitchen remodel, ADU, or bathroom project. We’ll walk the lot, talk through your options, and give you a written price before you commit.
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
"Every invoice was tied to a completed milestone, so I always knew what I was paying for."
— Justin Kim"Garage conversion to a one bedroom unit. He handled the plans, the city submittal, and every round of corrections. Took six months from first meeting to final inspection and he never once made the permit process my problem."
— Rachel Brooks"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Cole Schaefer