ADU Company in Highland — 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 Highland, CA

Kitchen remodeling in Highland means working inside homes built between the 1950s and 1970s, where original layouts, dated electrical panels, and decades of inland heat have taken a toll. We’re Westminster ADU Builders, and while ADUs are our core business, we also rebuild Highland kitchens with the same team that handles our accessory dwelling unit projects. That matters because a kitchen remodel here often uncovers the same infrastructure issues we see on ADU jobs: undersized panels, aging plumbing, and slab foundations that need careful planning before any cabinet comes out. Call (833) 620-3521 to talk through your kitchen, your budget, and what’s realistic on your lot.

Call (833) 620-3521

Why Highland Homes Are Different

Highland’s housing stock runs heavily to mid-century single-family homes on lots that would be impossible to find in denser parts of the Inland Empire. That’s the good news: space for a detached ADU, room to expand a kitchen, and enough yard left over for a garden or a pool. The less visible reality is that many of these homes were built when 60-amp electrical service was standard, galvanized plumbing was common, and insulation was an afterthought. Summer days over 100°F punish every gap in a building envelope. Santa Ana winds find every loose roof edge.

Then there’s the septic and well situation. A meaningful share of Highland properties are not connected to municipal sewer. That changes what’s possible on any project that adds a bathroom, a kitchen, or a full ADU. San Bernardino County requires site-specific septic evaluations, and hillside lots frequently need geotechnical reports before foundations can be designed. In flatter cities nearby, a contractor might never mention a geotech report. In Highland, it’s often step one. Anyone quoting work without asking whether you’re on sewer or septic is not doing the homework.

Our Main Highland Services

Highland homeowners call us about two things more than anything else: adding an ADU to a generous lot, and bringing a tired bathroom up to modern standard. Both jobs share the same Highland-specific wrinkles: older panels, septic constraints, and a county permitting process that rewards preparation.

ADU Builders in Highland

Highland is one of the strongest ADU markets in the Inland Empire, thanks to lot sizes that routinely exceed 7,000 square feet and a planning department that processes accessory dwelling unit applications steadily. We build both prefab and site-built ADUs here, and we’ll walk you through the real tradeoffs: a Plant Prefab or Abodu unit can go from permit to occupancy faster, while a stick-built ADU gives you full control over layout and finish. Septic capacity is the biggest wildcard on many Highland lots, so we assess that before recommending any path. ADU Builders in Highland is where we cover that process in detail.

ADU Builders in Highland

Bathroom Remodeling in Highland

Bathrooms in Highland’s mid-century homes were built compact: a 5-foot tub, a single vanity, and often a window that’s failed over 60 years of inland sun. We remodel these spaces to add storage, improve ventilation for hot summers, and bring plumbing up to current code. On septic-system properties, we coordinate fixture counts with the county’s requirements so a new soaking tub doesn’t overload the leach field. Whether the bathroom is inside your main house or part of a new ADU, it’s the same crew doing the work. Bathroom Remodeling in Highland covers the full scope.

Bathroom Remodeling in Highland
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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 Highland

Kitchen remodeling in Highland usually means opening up a closed-off galley kitchen in a home built between 1955 and 1975, then rebuilding it to handle modern appliances, more counter space, and summer temperatures that push a poorly ventilated kitchen past uncomfortable. The specific problem we solve here is infrastructure: many of these homes still run on the original 60-amp or 100-amp panel, the original cast-iron drain lines, and slab floors that make moving plumbing a planning exercise, not an afterthought. By the time we’re done, the kitchen should work as hard as the rest of the house. Kitchen Remodeling is our main hub for this service, but here’s what Highland-specific work looks like.

Full Kitchen Renovation

Signs you need it

Your kitchen layout hasn’t changed since the Carter administration, cabinet doors no longer close square, and the stove is on a circuit that dims the lights when it cycles on.

What it costs in Highland

Full kitchen renovations in Highland typically run $35,000 – $55,000 depending on layout changes, cabinet grade, and whether the electrical panel needs upgrading.

How we do it

We start with a panel and plumbing assessment, map the new layout, pull county permits, then demolish, reframe, rough in electrical and plumbing, install cabinets and counters, and finish with flooring, backsplash, and appliances.

Cabinet Refacing and Countertop Replacement

Signs you need it

Your cabinet boxes are structurally fine but the doors are delaminating, the finish is worn through, and the countertops are chipped or stained beyond repair.

What it costs in Highland

Cabinet refacing and countertop replacement in Highland generally runs $8,000 – $18,000, with natural stone pushing toward the upper end of that range.

How we do it

We measure every box, order new doors and drawer fronts, strip and prep the existing frames, install new hardware, and template and cut new countertops for a one-week turnaround.

Island Addition with Seating

Signs you need it

You have a large kitchen with no island, no place for kids to do homework while dinner cooks, and unused floor space that could be working harder.

What it costs in Highland

Adding an island with seating in Highland typically falls between $6,000 and $14,000, which includes new electrical runs to the island location.

How we do it

We locate the island to preserve the work triangle, run a dedicated circuit under the slab or through the crawl space, then build and finish the island with matching cabinetry and a countertop overhang for seating.

What Kitchen Remodeling Costs in Highland

Item Typical range in Highland
Full kitchen renovation $35,000 – $55,000
Cabinet refacing + countertop replacement $8,000 – $18,000
Island addition with seating $6,000 – $14,000

What pushes a Highland kitchen remodel toward the top of those ranges is usually hidden: an electrical panel that needs replacing before any new circuits can be added, cast-iron drain lines that have to be cut out, or a septic system that constrains where fixtures can go without a county sign-off.

How long does a kitchen remodel take in Highland?

Most Highland kitchen remodels take 4 to 8 weeks from demo to final walkthrough. Cabinet refacing can be done in about a week. Septic or hillside conditions may add county review time before work starts.

Will the price change once work starts?

Our quotes are line-item fixed prices. If we open a wall and find something genuinely dangerous or non-compliant, we’ll stop and show you exactly what we found before any change order. Call (833) 620-3521 for a free estimate.

Brands We Service in Highland

We’re hands-on with six prefab ADU brands: Abodu, Cover, Dvele, and Mighty Buildings are the ones we most often recommend in Highland, along with Plant Prefab and Boxabl for specific lot conditions. We also know Tuff Shed’s accessory structures for clients who want a simpler, lower-cost option first. Our relationship with these brands means we can get real answers on lead times and pricing in a Highland context, not a generic brochure. Learn more at our brands page.

Pricing for ADU Company in Highland, CA

Service Typical range in Highland
Full kitchen renovation $35,000 – $55,000
Cabinet refacing + countertop replacement $8,000 – $18,000
Island addition with seating $6,000 – $14,000

In Highland, the biggest price swing comes from what’s underneath the work: electrical service that’s 50 years old, septic constraints that limit fixture placement, or hillside foundations that need a geotech report before anything gets built. Every quote we write is a fixed, line-item number, so the price you approve is the price you pay unless you change the scope.

Neighborhoods We Serve in Highland

We work across Highland’s 92346 ZIP code, from the original mid-century tracts north of Baseline to the hillside lots that climb toward the San Bernardino National Forest boundary. Most of our Highland jobs are within a 15-minute drive, and we schedule estimates around your availability, not ours.

  • East Highlands
  • North Highland
  • Highland Hills
  • Base Line corridor neighborhoods
  • Greenspot Road area

Service Area – Cities Near Highland

We serve Highland and the surrounding Inland Empire communities. If you’re in San Bernardino, CA, Muscoy, CA, Redlands, CA, or Loma Linda, CA, we’re familiar with the local conditions in each of those cities and can respond quickly. The same team that builds ADUs in Highland handles jobs throughout the corridor.

Serving Highland, CA — Our Local Coverage Area

We’re based in the Highland 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 Highland

Ready to get started? Free estimates · Free on-site estimates response in Highland
Call (833) 620-3521

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 Highland Customers Say

★★★★★ 5.0 from 4+ reviews

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

— Lisa Hayes

"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."

— Daniel Norris

"Sound insulation between the unit and the main house is better than I expected. You genuinely cannot hear the tenant."

— Farah Hassan

How It Works in Highland

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your adu needs and we provide an upfront, transparent quote — no obligation, no hidden fees.

2

Licensed Technician Dispatched

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

3

Problem Solved, Guaranteed

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

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