ADU Company in Mentone, CA
Kitchen remodeling in Mentone means working with homes that were mostly built between the 1950s and 1980s, many on septic systems and larger lots along the Crafton Hills foothills. The county permitting process, the intense inland heat, and the reality of older ranch-style floor plans all shape how a remodel should be approached here. At Home Base ADU Builders, we handle that process from first layout sketch to final inspection, and we’ve served Mentone since 2016. Call (866) 403-9834 for a free estimate on your kitchen project.
Why Mentone Homes Are Different
Mentone is an unincorporated San Bernardino County community in ZIP 92359, which means ADU and kitchen projects here run through county building and safety rather than a city building department. That single fact changes timelines, plan review requirements, and the inspection cadence. It also means county-specific rules around septic capacity come into play on older lots, and any remodel that adds square footage or changes plumbing can trigger a septic review before interior work gets approved.
The housing stock itself is specific. Mentone has a high concentration of mid-century ranch homes and older single-family houses on large, semi-rural parcels, along with a significant number of mobile and manufactured homes. Kitchen remodels here frequently mean opening up a cramped galley kitchen in a 1960s rancher or working around septic line locations that limit where a sink or island can move. The lots are generally generous – often a half acre or more – and that gives us room to consider bump-out additions or adjacent ADU space where an incorporated city lot would force a tighter solution.
Climate is the other factor that shows up in every project we scope. Mentone sits at the base of the Crafton Hills in the hot, dry East Valley. Summer temperatures regularly push past 100 degrees, and Santa Ana winds are a seasonal reality. Kitchen work here needs ventilation that actually moves hot air out, window placements that don’t turn the space into a solar oven by 2 p.m., and exterior details – James Hardie fiber-cement siding, wind-rated patio covers – that hold up to the conditions without constant maintenance.
Our Main Mentone Services
Mentone homeowners call us most often about two things: building an ADU on a larger lot, and remodeling a bathroom in an older home. Both projects require county permits and both have to answer for the septic and hillside realities of this area.
ADU Builders in Mentone
An ADU on a Mentone lot usually means a detached unit, not a garage tuck-under. The long east-side parcels open up real options – rear-yard detached units, two-story designs, even garage conversions where the existing structure is sound. Before design matters, though, the septic system’s capacity and setback from the proposed unit often decides whether a project is viable at all. We work that question early, with percolation and county review scheduled before you invest in full plans. ADU Builders in Mentone covers the full process.

Bathroom Remodeling in Mentone
Bathroom remodels in Mentone’s older homes usually involve a confined footprint, aging cast-iron plumbing, and occasional floor rot under older shower pans. When a home is on septic, we’re careful about water-saving fixtures and drainage design that works with the existing system. The heat matters too – a well-vented bath fan and a window that actually opens change how these spaces feel in July. Bathroom Remodeling in Mentone details the work, from walk-in showers to full re-plumbing.

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 Mentone
A kitchen remodel in Mentone usually means undoing decades of quick fixes in a mid-century ranch or a manufactured home’s galley layout. The original kitchens were built for different lifestyles: closed off, low on counter space, and designed before the era of double-wall ovens and 36-inch ranges. Add in the East Valley heat, and ventilation and air flow become real design problems, not afterthoughts. For the full scope of what a kitchen remodel involves, see our Kitchen Remodeling service hub.
Galley Kitchen Expansion
Signs you need it
One cook’s kitchen, no landing zone next to the range, and a sink wall that can’t hold dishes for two people.
What it costs in Mentone
Galley kitchen expansion in Mentone typically runs $25,000 to $45,000 depending on whether walls move and plumbing relocates.
How we do it
We assess which walls are load-bearing, map septic and drain locations, then open the layout by widening the kitchen footprint or borrowing from an adjacent dining area.
Full Gut Remodel
Signs you need it
Cabinets pulling away from the walls, wiring that predates modern kitchen loads, and a floor plan that can’t accommodate standard appliances.
What it costs in Mentone
A full gut remodel in Mentone is typically priced between $45,000 and $75,000, with high-end runs reaching $90,000 or more.
How we do it
We strip to studs, correct framing and electrical, run new plumbing within septic constraints, then rebuild with new cabinetry, counters, and a vented, insulated envelope.
What Kitchen Remodeling Costs in Mentone
| Item | Typical range in Mentone |
|---|---|
| Galley kitchen expansion | $25,000 – $45,000 |
| Full gut remodel | $45,000 – $75,000 |
| Kitchen remodeling (county-permitted, mid-range) | $35,000 – $55,000 |
How long does a kitchen remodel take in Mentone?
Six to ten weeks is typical, and county plan review and septic checks add two to four weeks on the front end before we open a wall.
Will a kitchen remodel in Mentone trigger a septic review?
If you’re moving the sink, adding square footage, or changing drain lines, yes. The county will want septic capacity and setback verification before interior work is approved.
Brands We Service in Mentone
For ADU-adjacent kitchen and bath finishes in Mentone, we work with Mighty Buildings, Boxabl, and Tuff Shed products depending on the structure and budget. That range means we’re not pushing one panel system or one shell type. See our brands for what each offers.
Pricing for ADU Company in Mentone, CA
| Service | Typical range in Mentone |
|---|---|
| Kitchen galley expansion | $25,000 – $45,000 |
| Kitchen full gut remodel | $45,000 – $75,000 |
| Kitchen remodel, county-permitted mid-range | $35,000 – $55,000 |
| Bathroom remodel (full gut) | $20,000 – $35,000 |
| ADU design and permitting | $8,000 – $15,000 |
| Garage conversion to ADU | $120,000 – $180,000 |
| Detached ADU, 600 – 800 square feet | $180,000 – $300,000 |
| ADU, premium prefab (Dvele/Plant Prefab) | $400,000 – $600,000+ |
In Mentone, the two big cost movers are septic system work and hillside grading. A new or upgraded septic system can add $10,000 to $25,000 before framing starts, and slope correction on foothill lots runs on top of that. We give written, line-item bids before work starts, and we don’t change the price once the contract is signed unless you change the scope.
Neighborhoods We Serve in Mentone
We work throughout Mentone, from the older ranch-home streets off Mentone Boulevard up into the foothill roads where lots get larger and septic systems are the rule. Response for an estimate in Mentone is typically within one to two business days.
- Mentone Boulevard corridor and adjacent ranch-home streets
- Foothill parcels off Garnet Street and the Crafton Hills frontage
- Larger semi-rural lots along Crafton Avenue and Wabash Avenue
- Mobile and manufactured home communities in the 92359 ZIP
- East Mentone parcels bordering the Yucaipa side
Service Area – Cities Near Mentone
We handle projects across the East Valley and into the surrounding county communities. From Mentone we routinely serve Redlands, CA, Yucaipa, CA, Highland, CA, and Calimesa, CA, each with its own permitting quirks – incorporated city departments in some, county review in others.
Serving Mentone, CA — Our Local Coverage Area
We’re based in the Mentone 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 Mentone
We schedule Mentone estimates within one to two business days in most cases, and we batch work across the East Valley so scheduling stays tight.
Yes. Mentone is unincorporated San Bernardino County, so all ADU, kitchen, and bath work that touches structure, plumbing, or electrical goes through county plan review and inspection.
We coordinate the septic review, percolation testing, and any well-related setbacks with the county. On Mentone’s larger foothill lots, this step often runs first, before design dollars are committed.
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 Mentone Customers Say
"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."
— Robert Hayes"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Colleen Pruitt"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."
— Priya Mehta