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Toto Construction in Fontana, CA | Daly City Construction
We are an independent contractor that installs, resets, and services Toto fixtures across Fontana, and the main thing that sets our Toto work apart here is that we see this city’s split housing reality every week – settled 1950s clay-slab ranchettes south of the 10 and fast new-code foothill builds pushing north toward the mountains. We also provide Toto service in Bloomington for homes facing similar conditions. Same brand, two completely different installation jobs, often in the same day. If you’re dealing with a rocking Toto on a cracked slab or planning a fresh Toto rough-in on new construction, call us at (866) 505-5254 for a straight answer and a free estimate. We cover all Fontana ZIPs: 92337, 92331, 92334, and 92335.

Why Fontana Residents Choose Us for Toto Service
Noel Cabrera, our owner, grew up watching his uncle re-frame a garage in Daly City’s Westlake district and decided then that doing work with his hands was the only kind of work that made sense. That’s the same reason we treat Toto fixtures like systems, not interchangeable boxes. A Toto Drake on a Fontana slab that’s shifted half an inch behaves differently than a Toto Ultramax II on a fresh tract pour, and if the tech on site doesn’t know which one they’re looking at, you get a new wax ring slapped on a problem that’ll come back in six months.
We offer Toto sales & service with the same accountability we bring to every remodel – one point of contact from diagnosis to finished install. We use genuine Toto OEM fill valves, flappers, and Washlet components for the parts that carry water, pressure, or electronics. Independence matters here: we’re not manufacturer-affiliated, so we’ll tell you when a scaled valve is a repair and when a cracked base means it’s time to replace.
Tell me what the house needs, not what you think it needs – then we’ll figure out the right fix.
Styles & brands we work with







Common Toto Construction Problems We Solve in Fontana
- Rocking and seeping at the base – expansive clay slab movement. Fontana’s older south-side tracts, especially in 92335, sit on clay soil that swells and settles with moisture changes. A Toto that rocks or weeps at the base is usually a blown wax ring and an out-of-level closet flange over moved slab, not a failed bowl. We cut back to sound concrete, set flange extensions, and re-level before resetting the fixture.
- Hard water scaling clogging Toto fill valves and Washlet screens. Inland Empire water is hard, and Fontana’s summers don’t help – minerals concentrate faster when evaporation runs high. Narrow Toto fill valves and Washlet inlet screens scale up, causing weak fills, phantom running, and clogged bidet nozzles. We stock replacement OEM valves and screens and can swap them fast.
- Tank-to-bowl leaks and wobble from loose closet bolts on out-of-plumb floors. Mid-century ranchettes in Fontana were rarely leveled for modern one-piece fixtures. Loose closet bolts on a 1950s bathroom floor translate to tank-to-bowl leaks that drip slow and rot subfloor. We re-shim, re-bolt, and seal with OEM gaskets before the drip becomes a framing problem.
- Washlet and Neorest electronics tripping GFCIs in older Fontana baths. Many 1950s and 1960s Fontana bathrooms were never wired with a dedicated circuit for electronic bidet seats. Washlet and Neorest units draw enough on startup to trip a shared GFCI, and Santa Ana wind events push dust and grit into seat mechanisms. We diagnose the circuit before blaming the seat.
- Flange failures on jackhammered slab repairs from old sewer-line work. Fontana’s south side has seen decades of foundation and sewer-line retrofits. When a plumber opens a slab to fix a line, the closet flange often gets taken out and poorly reset. A Toto installed on a crooked or cracked flange will rock and leak no matter how good the bowl is. We build the flange back right before the fixture goes down.
Toto Service in Fontana: What Local Conditions Mean for Your Equipment
Fontana’s remaining undeveloped foothill and former Kaiser Steel land is being built out fast on the north side, in 92336 and 92337, while the old south-side tract streets around 92335 are still fighting expansive clay and 1950s slabs. That means Toto work in this city splits into two completely different jobs. On a new foothill tract build, we’re doing fresh-install rough-ins on new-code construction – floors are level, plumbing is ABS or PEX, and the Toto goes in clean. On a settled mid-century ranchette, we’re rebuilding flanges over clay-moved slab, re-leveling floors that were never flat to begin with, and sometimes re-framing subfloor where a slow leak has been working for years. No other city in our service area has this exact split, and it’s why our techs check the subfloor and flange before they ever unbox a fixture. For customers needing Rialto Toto service, we apply the same careful inspection process.
Toto Models & Products We Service in Fontana
We install and service the full Toto lineup you’ll find in Fontana homes: Drake and Drake II two-piece and one-piece toilets, Ultramax II one-piece elongated, Aquia dual-flush, and the Washlet and Neorest electronic bidet seats. Our parts approach is simple – genuine Toto OEM for anything that carries water, pressure, or electronics, and quality aftermarket hardware only where it doesn’t touch performance or warranty. We keep common Toto OEM fill valves, flappers, gaskets, and Washlet screens stocked on our trucks so most Fontana calls get resolved in one visit.
See the difference
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AfterToto Service Pricing in Fontana
What you’ll pay depends on what we find when we open it up. A scaled fill valve is a quick parts-and-labor fix. A blown flange over shifted clay slab is a bigger job. Here’s how typical Toto-related work in Fontana prices out:
| Service | Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
Every job starts with a free on-site estimate so we can look at the slab, the flange, and the water supply before we quote a line item. Call (866) 505-5254 to schedule yours – no obligation, just a straight answer.
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 – Toto Construction in Fontana
Usually no. On older Fontana homes in 92335, especially south of the 10, the clay soil under the slab swells and settles with moisture, and that movement breaks the wax seal and shifts the closet flange. The Toto bowl is typically fine. We re-level the flange, set new OEM hardware, and reset the fixture. Call (866) 505-5254 for a free look before you buy a replacement you don’t need.
That depends on your electrical. Many mid-century Fontana bathrooms were never wired with a dedicated circuit, and a Washlet or Neorest can trip a shared GFCI on startup. We check the circuit, the outlet location, and the rough-in dimensions before recommending an electronic seat. If you need a dedicated line run, we handle that too. Call (866) 505-5254 and we’ll tell you what your specific bathroom needs.
Yes, and it does it faster than you’d expect in this climate. Fontana’s hot, dry summers concentrate minerals, and the narrow fill valves in Toto toilets plus Washlet inlet screens scale up quickly. You’ll see weak fills, phantom running, and clogged bidet nozzles. We replace scaled OEM valves and screens as a straightforward repair – no reason to replace a good fixture. Call (866) 505-5254 if yours is running slow.
Completely. Newer foothill construction in Fontana has flat floors, modern plumbing, and level flanges, so Toto installation is clean and fast. Older south-side homes need flange rebuilds, subfloor leveling, and often a plumbing-update assessment before the fixture goes in. We quote them differently because they’re different jobs. Call (866) 505-5254 and tell us which side of town you’re on.
If you’re in an older Fontana ranchette, the conversion usually makes sense when the tub surround is failing or the layout feels cramped. We handle tub-to-shower conversion with Toto fixtures, proper waterproofing using Schluter systems, and subfloor repair where years of moisture have done damage. Our Glen Avon Toto service includes the same full-scope conversions. Prices run $3,500 to $10,000 depending on scope. Call (866) 505-5254 and we’ll walk your bathroom and quote it.
Service Areas Near Fontana
We serve Fontana and the surrounding Inland Empire communities, including Fontana service area coverage to the north and east. For Toto work specifically, Toto service in Eastvale and Toto service in Muscoy are part of our regular route. If you’re nearby, we’re already out here weekly.
Book Your Toto Service in Fontana Today
If your Toto is rocking, running, scaling up, or tripping a breaker, we can get a tech to your Fontana home fast. We also offer Pedley Toto service with the same rapid response times. Call (866) 505-5254 for a free estimate – we’ll tell you what’s actually wrong and what it’ll cost to fix it right.
Written by Noel Cabrera, Owner at Daly City Construction, serving Fontana since day one.