ADU Company in Los Serranos, CA
Kitchen remodeling in Los Serranos means working with homes built mostly between the late 1970s and the 1990s: two-story stucco on slab, attached garages, and floor plans that were never designed for how families cook and gather today. We are Fullerton ADU Builders, and we have served Los Serranos since 2017. We handle kitchen remodels as part of a broader specialty in accessory dwelling units and whole-property upgrades, which means the person planning your kitchen already understands how your 91709 lot, your slab foundation, and San Bernardino County’s building requirements fit together. Call us at (877) 801-4497 to talk through what your kitchen could become.
Why Los Serranos Homes Are Different
Los Serranos sits at the base of the Chino Hills, and that position shapes every interior project we take on. Summer temperatures here run well above coastal LA, so a kitchen remodel is not just cabinetry and counters. We plan for ventilation that actually moves hot air out, lighting that does not add more heat to an already warm room, and layouts that keep the cook out of the afternoon sun glare coming through west-facing windows.
The housing stock itself tells a story. Homes in the 91709 ZIP are overwhelmingly large-lot single-family tract builds from the late 1970s through the 1990s. Most are two-story stucco on concrete slab with attached garages. For a kitchen remodel, that slab foundation matters: moving a sink or gas line means cutting concrete, which changes cost and timeline. That is not a surprise to us, but it routinely surprises contractors who mostly work newer subdivisions with raised floors.
There is also the jurisdiction split that defines Los Serranos. This is an unincorporated Chino Hills-adjacent community in San Bernardino County. Your ADU or remodel does not answer to Chino Hills city hall or Chino city hall. It answers to San Bernardino County’s building department and ADU ordinance. We confirm that distinction before any plan is drawn, because it affects plan check, inspections, and which fees apply to your project.
Our Main Los Serranos Services
Los Serranos homeowners call us most about two things: adding an ADU to a generous side or rear yard, and bringing a dated bathroom up to the standard of the rest of the house. Here is what each involves in this specific community.
ADU Builders in Los Serranos
Detached ADUs make sense on most Los Serranos lots because the yards are large enough to hold them without crowding the primary home. We work brand-agnostic across prefab and site-built paths, matching the unit to your lot, your budget, and San Bernardino County’s ADU rules. For homes near the Chino Hills State Park edge, slope, drainage, and fire-hazard-zone review are part of the conversation from day one. Read the full breakdown on our ADU Builders in Los Serranos page.
Bathroom Remodeling in Los Serranos
Bathrooms in these late-1970s through 1990s tract homes tend to be compact, with original vanities and tub surrounds that have seen decades of use. We remodel them with the same permit fluency we bring to ADU work, which matters when a bathroom sits above a slab foundation or shares a wall with a garage conversion. See what is possible on our Bathroom Remodeling in Los Serranos page.
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 almost always starts with a floor plan that predates open-concept living. Homes built from the late 1970s through the 1990s in the 91709 ZIP typically have a closed-off kitchen, often with a peninsula or a low bulkhead separating it from the family room. The specific problem we solve most often is how to open that space without fighting the structure: many of these homes have load-bearing walls between kitchen and living area, and on a slab foundation, relocating plumbing is a real engineering decision, not an afterthought. We plan each remodel around the house as it was actually built, not as a generic template. As a Kitchen Remodeling specialist who also builds ADUs, we approach your remodel with the same permit and inspection discipline.
Full Kitchen Renovation
Signs you need it
Cabinet boxes are delaminating, drawers stick or fall off their glides, and the layout forces two people to work in a single-file galley that never fit the household in the first place.
What it costs in Los Serranos
A full kitchen renovation in Los Serranos typically runs $45,000 to $90,000 depending on cabinet grade, appliance selection, and how much the layout changes.
How we do it
We confirm San Bernardino County permit requirements, demo to the studs or partial gut as needed, reroute or upgrade plumbing and electrical to current code, then rebuild with new cabinets, counters, backsplash, flooring, and fixtures.
Cabinet Refacing and Countertop Replacement
Signs you need it
Cabinet boxes are structurally sound but the doors, drawer fronts, and countertops look dated, worn, or mismatch the rest of the home’s finishes.
What it costs in Los Serranos
Cabinet refacing and countertop replacement in Los Serranos typically runs $12,000 to $28,000 depending on door style, countertop material, and linear footage.
How we do it
We measure and template the existing layout, replace doors, drawer fronts, and hardware, install new countertops, and keep the original cabinet boxes in place to save time and money.
What Kitchen Remodeling Costs in Los Serranos
| Item | Typical range in Los Serranos |
|---|---|
| Minor kitchen refresh (paint, hardware, backsplash) | $8,000 – $18,000 |
| Cabinet refacing and countertop replacement | $12,000 – $28,000 |
| Full kitchen renovation | $45,000 – $90,000 |
Will moving my sink or gas line cost more in Los Serranos?
Yes, usually. Most Los Serranos kitchens sit on a concrete slab, so relocating plumbing or gas lines means cutting and patching concrete. Budget a few thousand extra for that alone, and call (877) 801-4497 for a line-item estimate.
Do I need a permit to remodel my kitchen in San Bernardino County?
Most structural, electrical, plumbing, or gas work does require a permit through San Bernardino County. We pull permits and schedule inspections as part of every Los Serranos kitchen remodel, so you never have to chase the county yourself.
Brands We Service in Los Serranos
We specify James Hardie fiber cement for exteriors tied to ADU projects, and we work with prefab manufacturers including Abodu, Cover, and Dvele. Parts and finish samples are routed through our Fullerton yard, which keeps Los Serranos projects moving without waiting on distant suppliers. See our brands for the full picture.
Pricing for ADU Company in Los Serranos, CA
| Service | Typical range in Los Serranos |
|---|---|
| Minor kitchen refresh | $8,000 – $18,000 |
| Cabinet refacing and countertop replacement | $12,000 – $28,000 |
| Full kitchen renovation | $45,000 – $90,000 |
| Prefab ADU (single unit, site work separate) | $120,000 – $350,000+ |
| Site-built ADU (design to occupancy) | $250,000 – $450,000+ |
| Garage conversion ADU | $80,000 – $180,000 |
| Bathroom remodel (standard, full update) | $18,000 – $45,000 |
| Primary bath remodel (higher-end finish) | $30,000 – $65,000 |
Los Serranos prices climb when a project touches a hillside lot with slope and drainage engineering, when slab cutting is required for plumbing moves, or when fire-hazard-zone review adds plan-check time to an ADU near the State Park edge. We quote fixed, line-item pricing before work starts, and we do not issue change orders unless you change the scope.
Neighborhoods We Serve in Los Serranos
Our Los Serranos work spans the full 91709 ZIP, from flat-lot tract streets to the hillside edges that front the Chino Hills State Park. We schedule estimates across the area once a week, so you will not wait long for a site visit.
- The 91709 tract-home corridors south of the 71
- Hillside lots near the Chino Hills State Park edge
- Large-lot subdivisions along the Chino Hills boundary
- Streets bordering Chino and Montclair
- Properties transitioning between Los Serranos and Chino Hills city limits
Service Area – Cities Near Los Serranos
If you are just over the line from Los Serranos, we also serve Chino, CA to the east, Yorba Linda, CA to the south, Montclair, CA to the north, and Pomona, CA to the west. The same brand-agnostic ADU guidance and kitchen and bath remodel service applies in every one of those cities.
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 typically schedule the first site visit within a week and can have drawings moving within two to three weeks after you approve the scope. Los Serranos projects go through San Bernardino County plan check, so permit timelines follow the county’s schedule, not ours. Call (877) 801-4497 to get on the calendar.
Some Los Serranos tract neighborhoods have active HOAs, and California law limits what an HOA can prohibit for ADUs, but architectural review may still apply to exterior changes. We help you identify whether your specific HOA has standing requirements before you spend money on plans.
Yes. Because Los Serranos is unincorporated San Bernardino County, every permit goes through the county building department rather than Chino Hills or Chino. We prepare and submit the permit package, respond to plan-check comments, and schedule all inspections through final sign-off.
Planning a kitchen remodel, bathroom update, or ADU in Los Serranos? Call Fullerton ADU Builders at (877) 801-4497 for a free, line-item estimate. We match the unit and the remodel to your lot, your home’s construction, and San Bernardino County’s rules, not the other way around.
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
"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Erin Ziegler"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."
— Tim Padgett"The kitchenette layout he suggested made better use of the space than the one on our original sketch."
— Marisol Guzman