ADU Company in Los Serranos — Plans, Permits & Build, One Fixed Price

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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ADU Company in Los Serranos, CA

Kitchen remodeling in Los Serranos has a shape to it that you only notice after doing this work here for years. The homes are mid-century and 1970s-80s ranch builds, which means galley kitchens, dropped ceiling boxes, fluorescent soffits, and walls that don’t want to move without a conversation about load paths. Orchard ADU Builders handles kitchen remodels across Los Serranos, and because we’re also an ADU contractor, we think about the whole property when we plan yours: the detached garage you might convert later, the backyard unit you’ll want to tie utilities into, the way a kitchen footprint affects both houses on a half-acre lot. Call us at (844) 386-2399 to talk about your kitchen.

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Why Los Serranos Homes Are Different

Los Serranos sits in unincorporated San Bernardino County, not in the City of Chino Hills that surrounds it. That’s the first thing to know, because it changes who reviews your plans. If a homeowner or an out-of-area builder assumes “91709” means city jurisdiction, they end up at the wrong counter. Your ADU or kitchen-addition plans go through County Fire and County Building & Safety plan review, under County zoning rules. For kitchen work that involves moving walls or adding square footage, that means County setbacks and septic clearance questions on older parcels can decide what’s possible before design even starts.

The housing stock matters just as much. Much of Los Serranos is single-story ranch tracts from the mid-century through the early 1980s, with detached garages, RV pads, and genuinely large rear yards. A lot of these kitchens were built around a peninsula that blocks the room, with a soffit dropping the ceiling eight inches for no reason anyone can name now. We see the same things over and over: load-bearing walls where the owner hoped to open the kitchen to the dining room, and galvanized plumbing that should be replaced while the walls are open anyway.

Climate shapes the work too. Los Serranos gets hot, dry inland summers and Santa Ana wind events along the foothill edge. That affects ventilation choices, range hood sizing for a kitchen that bakes in afternoon sun, and the placement of windows and skylights. If your kitchen faces west and you cook dinner in July, you’ll want to talk about glass, shading, and air movement before you pick cabinet finishes.

Our Main Los Serranos Services

Most calls we get from Los Serranos homeowners fall into two buckets: adding an ADU on a big lot with an existing detached garage, and bringing a dated main house up to current standards. Both start with the same question: what’s allowed on this property, given the County’s rules.

ADU Builders in Los Serranos

Los Serranos is one of the more ADU-friendly areas we work in, mostly because of the lots. When you have a half-acre parcel with a detached garage already standing, the default play is a garage conversion or a detached unit set back behind the house. But on older parcels, the deciding factor is usually septic clearance and setback rules, not the building itself. We walk the property, check what the County will allow, and then match the right prefab platform or site-built approach to the lot. ADU Builders in Los Serranos covers the full breakdown.

ADU Builders in Los Serranos

Bathroom Remodeling in Los Serranos

Bathrooms in these 1960s-80s Los Serranos ranches tend to be small, often compartmentalized, and usually past due for a gut. We see a lot of original cast iron that’s fine but awkwardly placed, and showers that were never waterproofed to modern standards. Because we also build ADUs, we can tie a main-house bathroom remodel into the same plumbing and permit package as a new unit, which keeps inspections simpler and gives you one contractor to call. Bathroom Remodeling in Los Serranos has the details.

Bathroom Remodeling in Los Serranos
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What happens when you call

  1. 1
    A real person answersNo phone trees — you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Kitchen Remodeling in Los Serranos

Kitchen remodeling in Los Serranos usually means working inside a solid old ranch house that was built well but planned for a different way of living. The specific problems here are structural in the literal sense: walls that carry roof load, ceilings with soffits hiding ducts and plumbing, and foundations on older parcels where any added square footage has to respect County setback and septic rules. We plan kitchens with those constraints in mind from day one. For a broader look at how we approach the work, see our Kitchen Remodeling page.

Full Kitchen Gut

Signs you need it

The layout hasn’t worked for a decade, the cabinets are delaminating, and the floor has a soft spot near the dishwasher.

What it costs in Los Serranos

A full kitchen gut in Los Serranos typically runs $45,000 to $75,000 depending on whether walls move and how much rough-in plumbing and electrical gets replaced.

How we do it

We demo to studs, fix the framing and subfloor, rough in new electrical and plumbing, hang drywall, set cabinets, template and fabricate countertops, install appliances, tile, and finish with a final walk-through on County-approved work.

Layout Reconfiguration

Signs you need it

The kitchen is closed off from the dining room and you want an open sightline, but the wall between them may be carrying roof load.

What it costs in Los Serranos

Reconfiguring a Los Serranos kitchen layout typically costs $25,000 to $55,000, with the biggest variable being the beam work if a load-bearing wall moves.

How we do it

We check the attic framing to identify load paths, design a beam or header solution if needed, pull the County permit, remove walls, reroute mechanicals, and rebuild the opening with proper support before finishing the new layout.

What Kitchen Remodeling Costs in Los Serranos

Item Typical range in Los Serranos
Full kitchen gut $45,000 – $75,000
Layout reconfiguration $25,000 – $55,000
Cabinet replacement and countertops $15,000 – $35,000

How long does a kitchen remodel take in Los Serranos?

A full Los Serranos kitchen remodel typically takes 6 to 10 weeks. County plan review and permit pickup can add 2 to 4 weeks before demo starts. Call (844) 386-2399 for a timeline based on your scope.

Will my kitchen remodel require County permits in Los Serranos?

Yes, any kitchen remodel that moves walls, changes electrical or plumbing, or adds square footage requires San Bernardino County Building & Safety permits. We pull them as part of the job. Call (844) 386-2399 to talk through what your project needs.

Brands We Service in Los Serranos

We work with the brands Los Serranos homeowners have already researched: Abodu, Cover, and Mighty Buildings among them. When a job calls for a specific platform, we’re experienced with the installation requirements, which keeps the build moving. See our brands for the full picture.

Pricing for ADU Company in Los Serranos, CA

Service Typical range in Los Serranos
Full kitchen gut $45,000 – $75,000
Layout reconfiguration $25,000 – $55,000
Cabinet replacement and countertops $15,000 – $35,000
ADU garage conversion $120,000 – $220,000
Detached ADU (prefab) $180,000 – $380,000
Detached ADU (site-built) $250,000 – $450,000
Bathroom remodel (main house) $18,000 – $45,000
Bathroom addition $30,000 – $65,000

What pushes an ADU price up in Los Serranos is usually the lot: septic clearance on an older parcel can force a unit into a different position, which changes foundation and utility runs. We write fixed-price quotes with line items so the number doesn’t drift once work starts.

Neighborhoods We Serve in Los Serranos

We serve all of Los Serranos, including the horse-property streets along Pipeline Avenue, the ranch tract homes around Schaefer Avenue, and the older parcels near the Chino Hills border. We’re typically able to schedule an on-site walkthrough within a few days across the area.

  • Pipeline Avenue area
  • Schaefer Avenue tract
  • Los Serranos Country Club area
  • Butterfield Ranch border
  • Central Los Serranos ranch parcels

Service Area – Cities Near Los Serranos

We also work in the cities directly around Los Serranos. If you’re in Chino, CA, Yorba Linda, CA, Montclair, CA, or Pomona, CA, the same team handles your project. Same County rules on the Los Serranos side, different municipal counters elsewhere, same process.

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

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Call (844) 386-2399

What happens when you call

  1. 1
    A real person answersNo phone trees — talk to a local adu pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Los Serranos Customers Say

★★★★★ 5.0 from 4+ reviews

"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."

— Sarah Kowalski

"The kitchenette layout he suggested made better use of the space than the one on our original sketch."

— Christine Park

"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."

— Diego Delgado

How It Works in Los Serranos

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

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2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Los Serranos — typically within 30–60 minutes, with parts stocked on the truck.

3

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We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

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