ADU Company in Los Serranos, CA
Kitchen remodeling in Los Serranos usually means working inside a 1950s-to-1970s ranch home where the original layout was built for a different era of cooking and gathering. Most of these houses have solid bones but outdated electrical, cramped galley layouts, and worn cabinetry that no longer fits how a family actually lives. We’re Sunstone ADU Builders, and we handle kitchen remodeling, ADU construction, and bathroom remodeling across Los Serranos as a single specialized team. If you’re planning a kitchen upgrade alongside an ADU or a primary-home refresh, call us at (855) 949-1913 for a free estimate.
Why Los Serranos Homes Are Different
Los Serranos sits in unincorporated San Bernardino County, which means every permit and inspection runs through the County rather than a city building department. That single fact changes how we schedule work and how long plan checks take here compared to Chino or Chino Hills just across the boundary line. Contractors who spend most of their time in incorporated cities often get tripped up by this, but it’s our daily reality in the 91709 ZIP code.
The housing stock is predominantly mid-century ranch construction: single-story homes on large lots, many with detached garages or carports that were never designed to carry a second dwelling’s electrical load. Older panels, galvanized water lines, and original sewer laterals are common. Our kitchen and bath work in Los Serranos routinely includes panel upgrades and re-piping because the additions need it. On the plus side, those generous lot sizes give us room to work, stage materials, and sequence interior remodeling without shutting down the whole property.
Summers here run hot, with frequent days in the 95 – 105°F range, so any kitchen or ADU project has to account for ventilation, cooling load, and heat gain through west-facing walls. The Chino Hills open space sits close enough that Santa Ana wind events bring ember concerns for detached structures, which is one reason we specify James Hardie fiber cement siding on ADU exteriors throughout Los Serranos.
Our Main Los Serranos Services
Most Los Serranos homeowners reach out to us for one of two projects: building an ADU in the backyard or bringing a dated bathroom up to modern function and finish. Both run through County permitting here, and we handle that process as part of the scope.
ADU Builders in Los Serranos
Because Los Serranos is built around the Los Serranos Country Club golf course, many lots are large enough to place a detached ADU where it captures fairway views while still meeting the County’s setback and height limits. That often means the difference between a standard 16-foot flat-roof unit and a taller two-story plan. We’re authorized builders for Abodu, Cover, Tuff Shed-style structures, and traditional stick-built construction, so the recommendation follows your site and budget. ADU Builders in Los Serranos covers full project scope, from County permits through move-in-ready interiors.
Bathroom Remodeling in Los Serranos
Bathrooms in these 1950s – 1970s ranch homes were often built small: narrow tub surrounds, single sinks, and lighting that can’t support a modern vanity setup. Our bathroom remodeling work here focuses on reconfiguring the footprint without moving load-bearing walls, upgrading water lines and drains to handle current fixtures, and finishing with materials that hold up to hard water and dry heat. Bathroom Remodeling in Los Serranos explains our process, including how we coordinate with your ADU project if you’re building both at once.
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 means working with the footprint of a mid-century ranch while bringing the room into how people actually cook and entertain today. Most original kitchens here are galley-style or closed off from the living area, with a single oven circuit, minimal counter space, and cabinets that have seen six decades of use. Our job is to open sightlines, add workable counter and storage, upgrade electrical and plumbing to code, and finish with surfaces that stand up to hot inland summers and daily wear. If you’re also building an ADU, we can run both projects through one contract and one permit package, with kitchens finished rental-ready or owner-occupied spec. Learn more about this scope on our Kitchen Remodeling page.
Full Kitchen Renovation
Signs you need it
The layout fights you every day: no landing space next to the range, one usable outlet on the counter, cabinets that don’t close square, and a floor plan that isolates the cook from everyone else.
What it costs in Los Serranos
A full kitchen renovation in Los Serranos typically runs $48,000 – $78,000 depending on cabinetry grade, appliance selection, and whether walls come down.
How we do it
We start with as-built measurements and County permit drawings, demo to studs, upgrade the electrical and plumbing rough-in, then install cabinetry, countertops, appliances, lighting, and flooring in sequence.
Kitchen Island and Layout Reconfiguration
Signs you need it
You want an island or peninsula with seating and prep space, but the current kitchen is walled off from the dining or living area.
What it costs in Los Serranos
Layout reconfiguration with an island typically costs $22,000 – $38,000 in Los Serranos, including structural work where a wall is load-bearing.
How we do it
We confirm which walls are load-bearing with a structural engineer, design the new sightline, move plumbing and electrical as needed, then build and finish the island with your choice of countertop and base cabinetry.
What Kitchen Remodeling Costs in Los Serranos
| Item | Typical range in Los Serranos |
|---|---|
| Full kitchen renovation | $48,000 – $78,000 |
| Layout reconfiguration with island | $22,000 – $38,000 |
| Countertop and backsplash replacement | $8,000 – $16,000 |
How long does a kitchen remodel take in Los Serranos?
Most full kitchen renovations in Los Serranos take 8 to 12 weeks from demo to final inspection, depending on County plan-check timing and whether we’re also upgrading the panel or re-piping. Layout changes add time when structural work is involved. Call (855) 949-1913 for a schedule that fits your project.
Will my kitchen remodel require a County permit?
Yes, structural, electrical, and plumbing changes in Los Serranos go through San Bernardino County, not a city building department. We prepare the drawings, pull the permits, and schedule County inspections as part of the contract. Call (855) 949-1913 to walk through your specific scope.
Brands We Service in Los Serranos
Across our Los Serranos projects we work regularly with Tuff Shed structures, James Hardie siding, and Abodu prefab ADU units. Having those brand relationships means we can quote accurate lead times and order materials with confidence rather than guessing at availability. See our brands for the full list.
Pricing for ADU Company in Los Serranos, CA
| Service | Typical range in Los Serranos |
|---|---|
| Full kitchen renovation | $48,000 – $78,000 |
| Kitchen layout reconfiguration with island | $22,000 – $38,000 |
| Countertop and backsplash replacement | $8,000 – $16,000 |
| Detached ADU, prefab (one-bedroom) | $180,000 – $280,000 |
| Detached ADU, stick-built (one-bedroom) | $220,000 – $350,000 |
| Garage conversion ADU | $110,000 – $180,000 |
| Bathroom remodel (full, mid-grade) | $18,000 – $35,000 |
| Bathroom remodel (primary suite) | $28,000 – $50,000 |
Prices in Los Serranos tend to rise when we’re upgrading a 1960s electrical panel, replacing old cast-iron sewer laterals, or doing structural work to open a load-bearing wall. Every project gets a fixed, written line-item quote before we start, so the number you approve is the number you pay. Call (855) 949-1913 for a free estimate on your specific scope.
Neighborhoods We Serve in Los Serranos
We work throughout Los Serranos, from homes bordering the Country Club fairways to the streets that touch the Chino Hills open space. Our team knows which lots have drainage patterns that affect ADU placement and which neighborhoods see the strongest Santa Ana wind exposure.
- Los Serranos Country Club area
- Pipeline Avenue corridor
- Morningstar Lane and surrounding streets
- Via Serena area
- Edinburgh Avenue corridor
For most projects in Los Serranos, we can have a site walk scheduled within a week of your call, and our estimate turnaround runs about 3 to 5 business days after we measure the space.
Service Area – Cities Near Los Serranos
Sunstone ADU Builders serves Los Serranos and the surrounding communities across the Inland Empire and Orange County line. If you’re considering an ADU or kitchen remodel on a comparable mid-century lot, we also work in Chino, CA, Yorba Linda, CA, Montclair, CA, and Pomona, CA. Same dedicated ADU and remodeling scope, same fixed pricing approach.
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
Los Serranos is unincorporated San Bernardino County, so ADU and kitchen remodel permits go through the County’s building department in San Bernardino, not through Chino or Chino Hills. We prepare drawings, submit them to the County, and manage inspections on your behalf. The process is routine for us, but it’s a different paperwork route than neighboring cities use.
Some streets around the Los Serranos Country Club have HOA covenants that can affect exterior colors, fencing, and ADU placement, though California law limits an HOA’s ability to prohibit ADUs outright. We check those covenants during the design phase so there are no surprises at the finish line. Call (855) 949-1913 and we’ll review your property’s specific situation.
Yes, and that’s exactly how we prefer to work. Because we handle the ADU shell, kitchen, and bathroom interiors in-house, you get one contract, one permit package, and one project manager across the whole Los Serranos build. It eliminates the coordination gap that happens when a general contractor hands off interiors to a second company. Call (855) 949-1913 to discuss your property.
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
"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."
— Doug Padgett"He was honest that our lot had a slope problem that would add real cost, before we signed anything."
— Paul Pruitt"The kitchenette layout he suggested made better use of the space than the one on our original sketch."
— Beatriz Garcia