ADU Company in Highland, CA
Kitchen remodeling in Highland means working with mid-century homes where original electrical panels, cast-iron plumbing, and closed-off floor plans collide with how families actually live today. Most jobs we take on in the 92346 ZIP involve opening up walls in homes built between 1950 and 1979, upgrading utilities that were never sized for modern appliances, and designing around the hot inland summers that make ventilation and cooling choices matter. If you’re researching a kitchen remodel, an ADU, or a bathroom upgrade, call us at (877) 265-7231 for a free estimate.
Why Highland Homes Are Different
Highland’s housing stock is dominated by single-family homes from the 1950s through the 1970s, and those homes share a set of remodeling realities you won’t find in newer subdivisions. Original electrical panels are common, often 100-amp or less, which means adding an induction cooktop, double oven, or dedicated appliance circuits usually requires a panel upgrade before drywall ever comes down. Plumbing is another recurring issue: galvanized steel supply lines and cast-iron drains that have been in the ground for 50 to 70 years are frequently at the end of their service life, and a full kitchen remodel is the right time to address them rather than burying problems behind new cabinetry.
Hot inland summers shape the work too. A poorly ventilated kitchen in Highland can push heat through the rest of the house from June through September, so we spec range hoods that actually move air outside, place refrigeration away from west-facing walls where afternoon sun hits hardest, and recommend insulation upgrades in exterior walls while they’re open. Winter rains, though less frequent, expose drainage issues on older properties, and we routinely find that downspouts and grading around the foundation need attention before any addition or major remodel proceeds. Mature citrus trees, a legacy of the area’s agricultural past, also influence decisions: their root systems can conflict with new sewer line routing, and a kitchen expansion that extends the home’s footprint often has to be designed around a tree worth keeping.
Our Main Highland Services
Highland homeowners call us most often for two projects: adding a detached ADU to a large lot, and remodeling a bathroom in an older home that needs utility work. Here’s what each involves in this city.
ADU Builders in Highland
Highland’s large lots and single-story homes make it a natural fit for detached ADUs, but the pre-1980s housing stock means utility upgrades are usually part of the job. We evaluate whether your existing electrical service, gas line, and sewer lateral can handle a second dwelling, then match you to a prefab or site-built approach that fits your budget and timeline. ADU Builders in Highland

Bathroom Remodeling in Highland
Bathrooms in Highland’s mid-century homes are typically small, with original cast-iron plumbing and layouts that no longer work for multigenerational households. We handle the full remodel including waterproofing, drain replacement, ventilation, and layout changes that make a 5×8 bath actually function. Bathroom Remodeling in Highland

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 Highland
Kitchen remodeling in Highland usually means working inside a 1950s to 1970s home where the original floor plan is closed off, the electrical panel is undersized, and the plumbing has never been touched. Homeowners here tend to wait until the kitchen is genuinely failing before they act, which is why we see so many jobs that combine cosmetic updates with structural and utility work in one pass. We approach every Highland kitchen as a full-system project, not a cabinet swap, because that’s what these homes actually need. If you’re comparing options, our Kitchen Remodeling page covers the service in more detail.
Panel and Electrical Upgrades
Signs you need it
Your breakers trip when the microwave and toaster oven run at the same time, or the panel is a fuse box or a 100-amp unit that can’t support modern appliance loads.
What it costs in Highland
Electrical panel upgrades in Highland typically run $2,800 to $5,500 depending on whether the service entrance, meter, and grounding need replacement too.
How we do it
We pull the permit, coordinate the utility disconnect with Southern California Edison, swap the panel and service wiring, then run dedicated circuits for appliances before drywall closes.
Layout and Wall Removal
Signs you need it
The kitchen feels cut off from the dining or living area, or the work triangle is so tight two people can’t move through the space at once.
What it costs in Highland
Removing a non-load-bearing wall between kitchen and living areas in Highland usually costs $1,500 to $4,000 including patching, flooring transitions, and finish work.
How we do it
We check joist direction and load paths, remove the wall, reroute any electrical or plumbing lines, then install a header if the wall is load-bearing with city inspection.
Drain and Supply Line Replacement
Signs you need it
Drains back up repeatedly, water pressure drops when any other fixture runs, or you see rust-colored water from galvanized supply lines.
What it costs in Highland
Replacing galvanized supply lines and cast-iron drains under a Highland kitchen typically runs $3,000 to $7,000 depending on access and how far the lines run.
How we do it
We open the walls or floor as needed, replace old pipe with PEX and ABS, add shutoff valves at every fixture, and test the system before anything is covered.
What Kitchen Remodeling Costs in Highland
| Item | Typical range in Highland |
|---|---|
| Panel and electrical upgrade | $2,800 – $5,500 |
| Layout change / wall removal | $1,500 – $4,000 |
| Drain and supply line replacement | $3,000 – $7,000 |
What pushes prices up in Highland is the age of the home: a 1960s kitchen that’s never had a panel or drain line updated will cost more than a remodel in a house that was partially upgraded in the 1990s.
Will I need a panel upgrade for a kitchen remodel in Highland?
Most mid-century Highland homes have 100-amp panels, and adding modern appliances often requires 200-amp service. We check your load calculation early so you know before demolition starts. Call (877) 265-7231 and we’ll assess your panel during the estimate.
How long does a kitchen remodel take in Highland?
Expect 6 to 10 weeks for a full Highland kitchen remodel including permits, utility work, and inspections. Panel upgrades and drain replacement add time, but we sequence them to keep the project moving. Estimates are free.
Brands We Service in Highland
We work across eight ADU and building-product brands including Boxabl, Plant Prefab, and Tuff Shed, with James Hardie fiber-cement specified for exterior durability. Parts and materials are ordered through our Southern California supply network, which keeps lead times for Highland projects predictable. See our brands for the full list.
Pricing for ADU Company in Highland, CA
| Service | Typical range in Highland |
|---|---|
| Kitchen panel and electrical upgrade | $2,800 – $5,500 |
| Kitchen layout change / wall removal | $1,500 – $4,000 |
| Kitchen drain and supply line replacement | $3,000 – $7,000 |
| ADU utility upgrade (electrical, gas, sewer) | $5,000 – $15,000 |
| Detached ADU (prefab or site-built) | $150,000 – $350,000 |
| Bathroom full remodel (mid-century home) | $18,000 – $45,000 |
| Bathroom drain and vent replacement | $2,500 – $6,000 |
Highland’s older homes push prices up when electrical panels, sewer laterals, and water lines haven’t been touched since the original build. Every estimate we give is a written line-item quote with fixed pricing, not a ballpark that changes once work starts.
Neighborhoods We Serve in Highland
We work across all 92346 neighborhoods, from the citrus-lined streets in the older central tracts to the hillside lots on the east side. Response time for estimates in Highland is typically within a few business days depending on our current project schedule.
- East Highlands
- Central Highland
- North Highland
- Highland Hills
- Baseline corridor
Service Area – Cities Near Highland
Buena Park ADU Builders has served Highland since 2016, and we take projects in neighboring cities across the Inland Empire. Homeowners in San Bernardino, CA and Redlands, CA call us for the same utility-upgrade-first approach, and we also cover Muscoy, CA and Loma Linda, CA.
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
We schedule Highland estimates within a few business days of your call. We’ll walk your property, check panels and plumbing access, and give you a written line-item quote before we leave. Call (877) 265-7231 to set a time.
Yes. We pull all required city permits for Highland projects, schedule inspections, and don’t cover any work until it passes. Older homes often need pre-existing conditions documented, which we handle during the planning phase.
Yes, and in Highland it’s often the smartest sequencing, since both projects can share utility upgrades, a single permitting cycle, and one construction schedule. We’ll show you how combining the two changes your total cost and timeline. Call (877) 265-7231 for a free estimate.
Call Buena Park ADU Builders at (877) 265-7231 to schedule your free estimate for kitchen remodeling, an ADU, or a bathroom remodel in Highland. We’ll walk your property, answer your questions, and give you a written quote so you know exactly what the job costs before you commit.
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 Highland Customers Say
"He gave us a realistic rental number for the finished unit rather than the optimistic one, and it's renting for about what he said."
— Danika Prince"Sound insulation between the unit and the main house is better than I expected. You genuinely cannot hear the tenant."
— Ramon Garcia"Every invoice was tied to a completed milestone, so I always knew what I was paying for."
— Kevin Bennett