ADU Company in Fontana, CA
Kitchen remodeling in Fontana usually means reworking a 1960s or 1970s tract home kitchen inside a stucco house built during the Kaiser Steel boom, on a lot where summer heat regularly pushes past 100°F. Most of these kitchens were designed for a different era: low ceilings, a single window over the sink, tile counters, and cabinets that fight the floor plan rather than work with it. Sunstone ADU Builders handles these remodels plus the ADU and bathroom work that often happens alongside, from 92335 to 92337. Call (855) 949-1913 when you’re ready to talk through the scope.
Why Fontana Homes Are Different
Fontana’s housing stock is predominantly post-WWII and 1960s-80s tract homes built on flat Kaiser Steel-era lots. Most are single-story stucco with attached two-car garages and block-wall backyards. That matters for kitchen work: many older 92335 homes have low original roof lines, so moving walls or reconfiguring a kitchen layout often means working around load-bearing conditions that were never drawn for an open floor plan.
The climate pushes every decision. Fontana sits in the hot, dry Inland Empire. Summer heat routinely exceeds 100°F, and Santa Ana wind events stir up dust and wildfire smoke for weeks at a time. A kitchen remodel here should account for range ventilation that actually moves heat out, materials that don’t warp or fade under intense sun exposure through west-facing windows, and sealed ductwork that keeps smoke out of the house. Tight envelopes aren’t a high-end feature in Fontana; they’re how you keep a kitchen comfortable in August.
Another Fontana-specific reality: many of these older tract homes have had unpermitted patio or room additions done over the decades. When we pull the permits for a kitchen remodel, those conditions sometimes surface during plan check. We’ve navigated that enough times to know how to sequence the work so the city’s corrections don’t strand the project halfway.
Our Main Fontana Services
Two projects dominate the calls we get from Fontana homeowners: ADU construction and bathroom remodeling, often scheduled together when a family is already moving walls or plumbing.
ADU Builders in Fontana
Fontana is an Inland Empire working-class owner-builder market where ADUs are most often financed and built as multigenerational family housing. Garage conversions and detached rear-yard units for parents, adult children, or rental income are the dominant paths here, not coastal luxury granny flats. Many Fontana lots have wide side yards and RV gates with block walls at the rear property line, so detached ADUs slip in behind the existing house nicely. The catch is that older Kaiser-era tract homes frequently have undersized electrical panels, which surfaces during ADU plan check. We’re an authorized builder for Abodu, Cover, and other prefab brands, and we also build traditional stick-built units. See the full scope at ADU Builders in Fontana.
Bathroom Remodeling in Fontana
Bathroom work in Fontana often ties directly to an ADU or a multigenerational living arrangement. A second bathroom added to a 92336 tract home changes how a three-generation household functions. The homes here have specific constraints: slab foundations in many post-WWII builds make moving drain lines more involved than on a raised floor, and the older stucco walls hide plumbing that was installed with different materials than code allows now. Summer heat also means an exhaust fan that actually clears humidity matters more than in coastal cities. We handle the full remodel, from rough-in to tile and fixtures, under one contract. Visit Bathroom Remodeling in Fontana for details.
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 Fontana
A kitchen remodel in Fontana works differently than one in a newer coastal city because most kitchens here sit inside 1960s-80s stucco tract homes with slab foundations, original electrical panels, and layouts that predate the open-concept era. The heat and dust from Santa Ana winds mean ventilation and material choices have to be thought through carefully, and the home’s era usually dictates which walls are load-bearing and what surprises sit behind the drywall. We scope the work honestly and handle the kitchen, the ADU, and the bathrooms in one pass so you’re not coordinating three contractors. Learn more about our approach at Kitchen Remodeling.
Cabinet Replacement and Layout Rework
Signs you need it
Cabinets that are delaminating, drawers that stick, or a layout where the refrigerator blocks the doorway usually means the kitchen was laid out for a 1970s household, not how you cook now.
What it costs in Fontana
Cabinet replacement and layout rework in Fontana typically runs $18,000-$40,000 depending on whether the footprint stays or walls move.
How we do it
We verify what’s load-bearing, order the cabinets once the plan is set, and install them with attention to how the kitchen functions during a Fontana summer, including clearance for ventilation.
Countertop and Backsplash Upgrade
Signs you need it
Chipped tile, grout that won’t come clean, or a countertop material that absorbs stains from every olive oil spill is the signal.
What it costs in Fontana
A countertop and backsplash upgrade typically lands between $4,500 and $12,000 in Fontana depending on square footage and stone choice.
How we do it
We template the existing cabinets, cut and install the stone or solid surface, and set the backsplash with sealed grout lines that hold up to grease and heat.
What Kitchen Remodeling Costs in Fontana
| Item | Typical range in Fontana |
|---|---|
| Cabinet replacement and layout rework | $18,000 – $40,000 |
| Countertop and backsplash upgrade | $4,500 – $12,000 |
| Full kitchen remodel with appliances | $35,000 – $75,000+ |
Prices move up when the remodel requires panel upgrades, structural changes to a low 92335 roofline, or re-routed plumbing in a slab foundation. We quote a fixed price after we walk the home, and the number on the contract is the number you pay.
How long does a kitchen remodel take in Fontana?
Most Fontana kitchen remodels run 4 to 8 weeks from demo to final walkthrough, depending on permit corrections, cabinet lead times, and whether the electrical panel needs upgrading. Call (855) 949-1913 for an exact schedule once we’ve seen the space.
Will a kitchen remodel here require a permit?
Yes. Fontana requires permits for any remodel that touches plumbing, electrical, or structural walls, and older homes often have unpermitted prior work surface during plan check. We pull all permits and make sure the final inspection passes. Call (855) 949-1913 for a free estimate.
Brands We Service in Fontana
We build and install prefab ADU units from Abodu and Cover, work with Tuff Shed-style structures, and specify James Hardie fiber cement siding for exteriors that hold up to Fontana’s sun and Santa Ana winds. For the full range of what we work with, see our brands.
Pricing for ADU Company in Fontana, CA
| Service | Typical range in Fontana |
|---|---|
| Detached prefab ADU (Abodu, Cover, or similar) | $180,000 – $320,000 |
| Detached stick-built ADU | $220,000 – $400,000+ |
| Garage conversion ADU | $120,000 – $200,000 |
| ADU kitchen finishing | $25,000 – $55,000 |
| ADU bathroom finishing | $18,000 – $40,000 |
| Primary bathroom remodel | $20,000 – $50,000 |
| Primary kitchen cabinet replacement and layout rework | $18,000 – $40,000 |
| Primary kitchen countertop and backsplash upgrade | $4,500 – $12,000 |
In Fontana, the biggest price drivers are undersized electrical panels on Kaiser-era homes, unpermitted additions discovered during plan check, and the heat, which makes insulation and cooling upgrades a practical necessity rather than an option. Sunstone ADU Builders has served Fontana since 2011, and every quote we give is a fixed price with no change orders unless you change the scope.
Neighborhoods We Serve in Fontana
We work across Fontana, from the older 92335 blocks north of Foothill Boulevard to the newer developments in 92336 and 92337. Most of our projects are in single-story tract home neighborhoods where the lots are generous enough for a rear-yard ADU or a garage conversion. Our typical response window for a Fontana estimate is 24 to 48 hours.
- Downtown Fontana and the historic core (92335)
- Southridge and the neighborhoods around Jurupa Hills (92337)
- Sierra Lakes and the north Fontana developments (92336)
- West End near the 15 freeway (92335)
- Summit Heights and the flat lots east of Sierra Avenue (92336)
Service Area – Cities Near Fontana
Beyond Fontana proper, we take ADU and remodeling projects in the surrounding Inland Empire communities. Homeowners in Bloomington, CA often call us about garage conversions on similar post-WWII lots. In Rialto, CA, the housing stock is close to Fontana’s, so the same permitting and electrical panel realities apply. Glen Avon, CA sits just south along the 60, and Pedley, CA homeowners reach us for detached units near the Jurupa hills.
Serving Fontana, CA — Our Local Coverage Area
We’re based in the Fontana 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 Fontana
We can usually schedule a site visit within 24 to 48 hours for homes in 92335, 92336, and 92337. From there, a detailed written quote takes about a week. Call (855) 949-1913 and we’ll set a time that works around your schedule.
Some Fontana neighborhoods have HOAs with their own exterior design standards, especially newer developments in 92336 and 92337. We review the HOA guidelines before we draw plans so the project clears both the city and the association. Call (855) 949-1913 to walk through your specific property.
Yes. That’s actually the most common arrangement we see in Fontana: an ADU in the rear yard and a kitchen or bathroom remodel in the main house, run as one sequence of work so the site isn’t torn up twice. We scope both under one contract and one permit set.
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 Fontana Customers Say
"The kitchenette layout he suggested made better use of the space than the one on our original sketch."
— Beatriz Garcia"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Reggie Ellison"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."
— Doug Padgett