ADU Company in San Bernardino — Design, Permits and Build Under One Contract

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 San Bernardino, CA

Kitchen remodeling in San Bernardino usually means working inside a 1940s-to-1970s stucco tract home where the original footprint, plumbing, and electrical panel are still doing the job they were installed to do sixty years ago. The work here is less about cosmetic upgrades and more about bringing an aging kitchen up to current code while designing for intense inland heat, Santa Ana wind events, and a household that often spans three generations. Classic ADU Builders handles the full kitchen remodel, and because we also build ADUs, we look at how the kitchen connects to the rest of the property, not just the room itself. Call (877) 265-5587 for a free estimate on a San Bernardino kitchen remodel.

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Why San Bernardino Homes Are Different

San Bernardino’s housing stock is dominated by mid-century and older single-story stucco tract homes, most built between the 1940s and 1970s, sitting on wide, deep lots with detached or attached garages and alley access. That geometry is a real advantage for ADU work: many lots already have a slab, a utility stub, and a side-yard or alley route to the back. But the same homes often carry aging 100-amp electrical panels, original galvanized plumbing, and shallow lot drainage that has to be addressed before any permit is issued. We see this on nearly every pre-1980 property we walk in San Bernardino.

The climate adds another layer. The city sits at the base of the San Bernardino Mountains in a hot, semi-arid inland zone. Summer cooling loads are real, and rooftop or detached ADU structures need wind-rated attachments for Santa Ana events. Toward the foothill edges, wildfire defensible-space rules and ember-resistant construction requirements start to apply, which flatland ADU work closer to the coast never contends with. Add the patchwork of jurisdictions, including older tract plats, flood and hillside overlays, and pockets of unincorporated county land, and every San Bernardino parcel has to be checked for feasibility before design begins.

We also see a pattern that is specific to this city: decades-old unpermitted patio covers, room additions, or second meters that surface during plan check. Those have to be legalized before the new unit can be signed off. It is not a reason to avoid the work. It is a reason to have a contractor who has seen it before.

Our Main San Bernardino Services

San Bernardino homeowners call us most about two things: adding an ADU on a deep lot with existing garage or alley access, and remodeling a bathroom inside a mid-century home that still has its original layout. Both start with the same first question: what will the city actually allow on this specific parcel.

ADU Builders in San Bernardino

Building an ADU in San Bernardino almost always means either a detached garage conversion or a rear-yard detached unit reached by a narrow side-yard drive, because the lots are deep enough to support it and the alley access already exists. The complication is what sits under the surface: older tract plats, flood and hillside overlays toward the foothills, and unpermitted work from decades past that plan check will flag. We handle the feasibility check, the permit path, and the build, from Tuff Shed conversion to architect-designed modular. ADU Builders in San Bernardino covers the full process.

ADU Builders in San Bernardino

Bathroom Remodeling in San Bernardino

Bathroom remodels in San Bernardino frequently involve replacing original cast-iron drain lines and updating a layout that was never designed for two working adults and a multigenerational household. We open the walls, replace the supply and drain lines that are past their service life, and rebuild to current code with proper ventilation for an inland climate. The full scope is detailed on our Bathroom Remodeling in San Bernardino page, including what typical mid-century San Bernardino bathrooms cost to bring up to standard.

Bathroom Remodeling in San Bernardino
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  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 San Bernardino

A San Bernardino kitchen remodel usually means pulling a 1950s or 1960s kitchen out of its original footprint and rebuilding it to handle today’s electrical load, current plumbing code, and a household that may include three generations cooking at once. Many of the kitchens we see still run on two 15-amp circuits, original galvanized supply lines, and a layout that puts the refrigerator against the only wall that could hold a vent hood. This is the core of the work we do. In ZIP codes 92418, 92423, 92424, and 92427, the conversation usually starts with load capacity and drain slope, not countertop color. We touched on this pattern in our Kitchen Remodeling overview, and the San Bernardino specifics below are what matter on a site visit.

Full Kitchen Rebuild

Signs you need it

The kitchen still runs on the original 100-amp service, the floor joists have been notched for decades-old plumbing, or the layout cannot accommodate a range hood without relocating the range.

What it costs in San Bernardino

A full kitchen rebuild in San Bernardino typically runs $38,000 to $75,000 depending on structural work, panel replacement, and finish level.

How we do it

We strip the room to framing, replace supply and drain lines, upgrade the electrical panel and circuits, reframe for the new layout, then install flooring, cabinets, counters, and appliances.

Kitchen Update Without Moving Walls

Signs you need it

The layout still works but the cabinets are delaminating, the counters are original tile over plywood, and the appliances are inefficient enough to matter on a San Bernardino summer energy bill.

What it costs in San Bernardino

A layout-preserving kitchen update in San Bernardino typically runs $18,000 to $35,000.

How we do it

We replace cabinet boxes and fronts, install new solid-surface or quartz counters, update the sink and fixtures, and swap appliances while keeping the sink and range in their current positions.

What Kitchen Remodeling Costs in San Bernardino

Item Typical range in San Bernardino
Full kitchen rebuild $38,000 – $75,000
Layout-preserving kitchen update $18,000 – $35,000
Electrical panel and circuit upgrade (often required) $3,200 – $6,500

What pushes a San Bernardino kitchen remodel toward the top of that range is almost always the age of the house, not the finish choices. A 1950s tract home with an original panel, galvanized drain lines, and a floor that has settled out of level will cost more to bring to code than a 1980s home on a flat lot. We price the mechanical and structural reality first, then the cabinets and counters.

How long does a kitchen remodel take in San Bernardino?

Most San Bernardino kitchen remodels run four to eight weeks, with the longer end reserved for jobs that require panel replacement, drain line replacement, or as-built corrections during plan check. We set the schedule after the first site walk.

Will the price change once work starts?

Not unless the walls reveal something the plans did not show, like a severed joist or an abandoned drain line, and in that case we document it and price it before touching it. You approve every change before it is scheduled. Call (877) 265-5587 for a written estimate.

Brands We Service in San Bernardino

We work across the systems San Bernardino homeowners have already researched, including Plant Prefab, Abodu, Tuff Shed, and James Hardie exterior finishes. We stock common trim, flashing, and finish parts locally, which keeps a mid-project fix from stalling the job for a week. See our brands for the full list of what we build with.

Pricing for ADU Company in San Bernardino, CA

Service Typical range in San Bernardino
Full kitchen rebuild $38,000 – $75,000
Layout-preserving kitchen update $18,000 – $35,000
Electrical panel and circuit upgrade $3,200 – $6,500
Primary bathroom remodel $22,000 – $42,000
Guest or hall bathroom remodel $13,500 – $24,000
Detached ADU, shell to finished interior $190 – $310 per sq ft
Garage conversion ADU $120 – $240 per sq ft
Tuff Shed or similar conversion $65,000 – $130,000

San Bernardino pricing shifts upward on the older parcels where the panel, drain lines, and unpermitted prior work all surface at once, and on foothill-edge lots where wildfire and hillside requirements add engineering time. We quote a fixed price after the site walk, and that price holds unless the walls reveal something no plan could have shown.

Neighborhoods We Serve in San Bernardino

We work the full San Bernardino grid, from the older tracts around downtown out to the foothill-edge streets where defensible-space rules start to shape the design. We are in this area regularly, and a site walk can usually be scheduled the same week you call.

  • North Park area
  • Verdemont
  • Del Rosa
  • Base Line corridor
  • Foothill-edge neighborhoods into Blair Park

Service Area – Cities Near San Bernardino

Most of our San Bernardino work comes from within the city, but we regularly take on projects in the surrounding unincorporated pockets and neighboring cities where the housing stock is similar. Muscoy, CA shares the same mid-century tract and unpermitted-addition pattern. Highland, CA and Loma Linda, CA sit on the same east-west corridor, and Rialto, CA has the same wide-lot, alley-access geometry. If you are unsure which jurisdiction your parcel is in, call and we will help you sort it.

Serving San Bernardino, CA — Our Local Coverage Area

We’re based in the San Bernardino 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 San Bernardino

Ready to get started? Free estimates · Free written quotes response in San Bernardino
Call (877) 265-5587

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 San Bernardino Customers Say

★★★★★ 4.8 from 4+ reviews

"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."

— Marcy Miller

"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."

— Beatriz Morales

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

— Eric Tran

How It Works in San Bernardino

Getting your adu handled is simple and fast.

1

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

3

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