ADU Company in Los Serranos, CA
Kitchen remodeling in Los Serranos typically runs $32,000 to $48,000 for a mid-range full remodel, and the flat, newer tract-home lots throughout the 91709 area mean you rarely fight the hillside setbacks that stall projects in neighboring Chino Hills. We’re Home Base ADU Builders, and while ADUs are our core, we also handle kitchen and bathroom remodels for Los Serranos homeowners who want one contractor from foundation to finished interior. Call (866) 403-9834 for a free estimate.
Why Los Serranos Homes Are Different
Los Serranos sits in an unincorporated pocket of San Bernardino County, surrounded by Chino Hills and Chino but governed by county rules. That distinction matters more than most homeowners realize. If your address says Chino Hills on the mailing label but your property is in Los Serranos, your ADU or kitchen addition permit runs through San Bernardino County, not Chino Hills city hall. Out-of-area contractors routinely get this wrong, and the mistake costs weeks.
The housing stock here is mostly late-20th-century and 2000s-era single-family tract homes with attached two- and three-car garages on generous, flat lots. That’s a genuinely good setup for garage conversions and detached ADUs. Compare that to the hillside parcels in Chino Hills proper, where slope and setback constraints kill projects before they start. In Los Serranos, the lot usually works in your favor. Many homes also have HOA overlays, which means design review can add a second approval step. We’ve handled enough Los Serranos projects since 2016 to know which HOAs are reasonable and which ones require extra lead time.
Climate shapes the work too. Summer heat is real, Santa Ana winds are a recurring fact of life, and the brush-covered hills around the community put fire-hardening on the table for any exterior work. We plan ADUs with proper cooling loads and shade orientation, and we use James Hardie fiber-cement for exteriors because it holds up to heat, wind, and the occasional ember better than vinyl or wood siding.
Our Main Los Serranos Services
Most Los Serranos homeowners call us about two projects: building an ADU on their generous lot, or remodeling the bathroom in a 1990s or 2000s tract home that’s showing its age. Here’s what each involves locally.
ADU Builders in Los Serranos
Detached backyard ADUs and garage conversions are unusually practical in Los Serranos because the lots are flat and the attached garages are already sized for real living space. We work across six prefab manufacturers plus custom builds, so your lot, budget, and timeline drive the recommendation, not a single brand’s margin. San Bernardino County’s setback and fire-area rules govern what you can build, and we’ll walk that path with you from first site check to final inspection. Learn more on our dedicated ADU Builders in Los Serranos page.
Bathroom Remodeling in Los Serranos
Most Los Serranos bathrooms we see are original to homes built between 1985 and 2005: fiberglass tub surrounds, brass plumbing that’s beginning to show its age, and vanities sized for a different era. We remodel bathrooms with the same single-contractor approach we use on ADUs, which means the plumber, tile setter, and electrician are coordinated under one roof instead of three. Hot, dry summers mean ventilation and moisture control matter more here than homeowners expect. Details 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 usually means taking a 1990s or early 2000s tract-home kitchen with oak cabinets, laminate counters, and a dated peninsula and bringing it up to what the house is worth today. The flat lots help here: most Los Serranos kitchens have room to expand into adjacent dining areas without fighting slope constraints. But the same San Bernardino County permit path that governs ADUs also governs any kitchen work that moves plumbing, gas, or load-bearing walls, so we handle drawings, permits, and inspections as part of the job. Our Kitchen Remodeling practice is built around the same brand-agnostic approach we use for ADUs: we recommend what fits your house and budget, not what’s easiest for us to sell.
Full Kitchen Renovation
Signs you need it
Your cabinets are delaminating at the edges, your layout puts the range against the refrigerator wall, and the electrical can’t handle a modern appliance load.
What it costs in Los Serranos
A full kitchen renovation in Los Serranos typically runs $32,000 to $48,000 depending on cabinet grade, countertop material, and whether you relocate plumbing or gas lines.
How we do it
We start with a site measure and a written line-item quote, then handle demo, rough plumbing and electrical, drywall, cabinetry, countertops, backsplash, flooring, and final trim under one contract.
Cabinet Refacing and Countertop Replacement
Signs you need it
Your cabinet boxes are structurally sound but the doors and drawer fronts are scratched, faded, or simply the wrong color for how you want the kitchen to feel.
What it costs in Los Serranos
Cabinet refacing and countertop replacement in Los Serranos typically starts around $8,000 for the refacing and $3,500 to $5,500 for new countertops depending on material.
How we do it
We measure for new doors and drawer fronts, apply the veneer to the existing boxes, then template and install the new countertops and sinks in one pass.
Kitchen Island and Layout Changes
Signs you need it
You have a peninsula that blocks traffic between the sink and the breakfast nook, and the kitchen feels closed off from the living space even though the square footage is there.
What it costs in Los Serranos
Removing a peninsula and adding an island in a Los Serranos kitchen typically falls between $9,000 and $15,000 depending on whether plumbing and electrical need to move.
How we do it
We trace the load path to see whether the peninsula wall is structural, relocate plumbing and electrical as needed, then frame, finish, and trim the new island in place.
What Kitchen Remodeling Costs in Los Serranos
| Item | Typical range in Los Serranos |
|---|---|
| Full kitchen renovation | $32,000 – $48,000 |
| Cabinet refacing | $8,000+ |
| Countertop replacement | $3,500 – $5,500 |
| Kitchen island or layout changes | $9,000 – $15,000 |
What pushes price up in Los Serranos is usually the HOA review layer on exterior-facing changes and the higher electrical loads summer heat puts on cooling equipment. If you want a window moved or a wall opened to the backyard, that’s a county permit item and we’ll price it before you sign, not after. Call (866) 403-9834 for an exact quote, estimates are free.
How long does a kitchen remodel take in Los Serranos?
Most full Los Serranos kitchen remodels run 6 to 10 weeks from demo to final walkthrough, with cabinet refacing and countertop jobs finishing in 2 to 3 weeks. HOA review can add a week or two if your changes touch the exterior.
Will the price change once work starts?
No. We quote fixed pricing with written line items before you sign, and we don’t issue change orders unless you ask us to change the scope. Los Serranos homes rarely hide structural surprises, but if we find something, we talk to you before any number moves.
Brands We Service in Los Serranos
We work hands-on with Abodu, Plant Prefab, and Tuff Shed, among others, and we carry the parts and finish materials those builds call for. Los Serranos homeowners considering a Tuff Shed conversion or an Abodu prefab can see how they actually compare for this lot, this budget. Details on our brands page.
Pricing for ADU Company in Los Serranos, CA
| Service | Typical range in Los Serranos |
|---|---|
| Full kitchen renovation | $32,000 – $48,000 |
| Cabinet refacing | $8,000+ |
| Countertop replacement | $3,500 – $5,500 |
| Kitchen island or layout changes | $9,000 – $15,000 |
| Tuff Shed-based ADU conversion | $80,000 – $130,000 |
| Prefab ADU (Abodu, Plant Prefab) | $180,000 – $280,000 |
| Custom detached ADU | $250,000 – $400,000 |
| Garage conversion ADU | $120,000 – $200,000 |
| Bathroom remodel (mid-range) | $18,000 – $30,000 |
| Primary bathroom remodel | $25,000 – $45,000 |
Prices in Los Serranos run a bit lower than the hillside parts of Chino Hills because flat lots mean less site prep and fewer retaining wall surprises, but HOA design review and fire-hardening requirements can add cost on some streets. We give you a written line-item quote upfront, and that number is the number you pay.
Neighborhoods We Serve in Los Serranos
Los Serranos is compact, but the streets each have their own character, and we know where the HOA overlays are tightest and where the county setbacks pinch the most. Typical response time for an estimate anywhere in the 91709 area is one to two business days.
- The tract-home streets south of Chino Hills Parkway
- The 2000s-era subdivisions off Pipeline Avenue
- The older 1970s and 1980s homes near Los Serranos Country Club
- The flat-lot cul-de-sacs between Butterfield Ranch Road and the county line
- The newer infill lots along the southern edge of the 91709 ZIP
Service Area – Cities Near Los Serranos
We serve Los Serranos and the surrounding communities, including Chino, CA, Yorba Linda, CA, Montclair, CA, and Pomona, CA. If you’re on the edge of Los Serranos and your mailing address says Chino Hills but the parcel sits in the county pocket, you’re still in our service area. Call (866) 403-9834 to confirm coverage for your address.
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. Every ADU, kitchen remodel, and bathroom remodel we do in Los Serranos goes through San Bernardino County permitting when the scope requires it, and we pull the permits, schedule the inspections, and stand behind the final sign-off. We don’t cut corners on the county process.
Interior remodels usually don’t trigger HOA review unless you’re changing plumbing, windows, or exterior walls. ADUs and garage conversions almost always do, especially if the garage face changes. We work with Los Serranos HOAs regularly and can tell you early whether your project needs that second approval.
Scheduling depends on scope and current workload, but most Los Serranos projects start within 2 to 6 weeks of a signed contract. County permit turnaround for ADUs can add time, so we file as soon as the drawings are approved. Call (866) 403-9834 and we’ll give you a realistic start date for your specific project.
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."
— Robert Hayes"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Colleen Pruitt"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."
— Priya Mehta