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Toto Construction in Claremont, CA | San Mateo Construction
We provide independent Toto service across Claremont, from the Village core to the north foothills. Toto toilets and Washlet seats are a smart choice for this city’s older Craftsman and mid-century homes, and the reason is simple: they perform well, fit tight bathroom footprints, and their design language doesn’t fight the architecture the way some flashy fixtures do. We’re not affiliated with or authorized by Toto; we’re a licensed general contractor that knows these systems inside out. Call (855) 901-7266 when you need a Toto fixture installed, repaired, or worked into a larger remodel.
Why Claremont Residents Choose Us for Toto Service
We’ve installed and repaired Toto in Montclair and enough Claremont bathrooms to know what works and what doesn’t in this housing stock. That matters, because the homes here are not uniform. A 1920s Craftsman near the Colleges has different plumbing realities than a 1960s ranch on the north edge. We account for that difference every time we touch a Toto fixture.
Noel Carrington, our owner, got his start in the trades the old way: helping his father pour concrete footings in a San Mateo backyard, then formal training in construction technology at Skyline College. What he brought back from those years is a bias toward correct installs over quick ones. When we mount a Toto Drake or Ultramax, the floor flange gets evaluated first. When we add a Washlet, the electrical work is done right, not rigged. We source genuine Toto OEM fill valves, flush towers, and gaskets whenever they’re available, because aftermarket parts that “fit” are often the reason a toilet still runs after three repair attempts.
Styles & brands we work with







Common Toto Construction Problems We Solve in Claremont
- Hard-water valve wear in Drake and Ultramax fill valves. Claremont water is mineral-heavy, and over time that scale coats the valve assembly and breaks down the seal. A toilet that keeps running, or flushes weakly, usually points here. We replace with OEM Toto valves rather than generic parts that wear out twice as fast.
- Wax ring failures and flange leaks in older homes. Settlement over decades, plus the minor seismic shifts this area gets, leaves flanges low or slightly tilted in many pre-1960s homes. If you smell sewer gas or see staining at the base of the bowl, that’s the likely culprit. We reset the flange, use reinforced rings, and correct the roughed floor before reinstalling the toilet.
- Washlet seat electronics failures from power surges and heat. The S550e and C5 seats have pumps, heaters, and control boards that don’t love power spikes during Santa Ana events or sustained heat in unconditioned wall cavities. When a seat goes dark or the heater stops working, we diagnose the specific circuit rather than suggesting a whole-unit replacement by default.
- Tank-to-bowl gasket and bolt leaks on two-piece toilets. Thermal cycling through hot foothill summers and cool winter mornings, combined with minor seismic movement, stresses these connections over time. Water between the tank and bowl is the tell. We replace gasket and hardware as a set, not just the visible leak.
- Uneven or settling floors causing toilet rocking. Rooms in older homes are rarely level. A rocking toilet compresses one side of the wax ring and eventually leaks. We shim correctly and secure the flange before setting the fixture, so the repair lasts.
Toto Service in Claremont: What Local Conditions Mean for Your Equipment
Claremont is not Pomona or Rancho Cucamonga. The five Claremont Colleges make this a working college town, and the Village core is architecturally protected, which changes how renovation work gets approved and executed. What that means for Toto owners specifically: if your home sits in the historic district or near it, bathroom work often triggers design review. Clean-lined Toto models like the Drake and Ultramax II, and integrated Washlets, tend to pass review without the friction that comes from fixtures that read as aggressively modern. They fit in a Craftsman bathroom without sticking out, and that matters when you’re trying to preserve character while getting modern performance. On a 1920s Craftsman near the Colleges, we remodeled a hall bath where the original flange sat below a lath-and-plaster floor that had settled unevenly. We reset a Toto Drake on a new flange with a reinforced wax ring, added a Washlet seat, and tiled to match the period trim. The homeowner wanted the bathroom to feel original but function like new. The Toto setup delivered both, and there was no design-review fight.
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AfterToto Models & Products We Service in Claremont
We work on the whole Toto lineup most common in Claremont homes: Drake two-piece toilets (CST744 series), Ultramax II one-piece toilets, S550e and C5 Washlet bidet seats, EcoPower flush valves, and standard fill and flush valves. For repairs, we use genuine OEM parts whenever the model is still supported. If a toilet is discontinued and OEM parts aren’t available, we’ll tell you honestly whether a compatible part makes sense or whether you’re better off putting that money toward a current model. We also handle full bathroom remodels, tile work, and fixture installation for homeowners who want Toto integrated into a larger project rather than bolted on afterward.
Toto Service Pricing in Claremont
Bathroom work in Claremont covers a wide range because the homes themselves do. A small bath in a 1950s ranch is a different job than a hall bath in a Period Revival house with design-review requirements. These are the price ranges we quote most often across our Toto-related projects:
| Service | Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives cost is the condition of the subfloor, whether the flange needs resetting, whether design review applies, and whether you want electrical added for a Washlet. A free estimate tells you exactly what you’re dealing with before anything gets opened up. Call (855) 901-7266 and we’ll walk the specifics with you.
Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont area and know this community well, including Toto service in La Verne. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Claremont
Yes. Many pre-1980s Claremont bathrooms lack a GFCI outlet near the toilet, so we add a new dedicated circuit or extend an existing one with a properly rated GFCI receptacle. We don’t run extension cords behind cabinets or tap into ungrounded wiring. Code requires GFCI protection near a water source, and we pull the permit for that electrical work. Call (855) 901-7266 for an estimate.
The usual culprit in Claremont is mineral scale in the fill valve, not the flapper. Hard water builds up inside the valve assembly and prevents it from sealing completely, which is why the toilet runs intermittently even though everything looks clean. We replace the OEM Toto fill valve, flush the supply line, and in most cases the problem is gone. Call (855) 901-7266 if you’d like us to check it before you chase parts.
A straight toilet swap on the same flange generally doesn’t require a permit. Adding the electrical outlet for a Washlet does require a building permit for the electrical work. If the floor or flange is damaged and we’re opening walls or repair the subfloor, permits may come into play. We pull permits when they’re required, and we’ll tell you up front whether your project needs one. Call (855) 901-7266 for a free estimate, and we’ll clarify for your specific home.
Usually yes. The Ultramax II has a compact one-piece profile, and its rough-in dimension of 12 inches matches most 1950s and 1960s ranch plumbing. The real variable is where the old rough-in sits; if it’s an odd dimension like 10 or 14 inches, we’ll adapt the flange or recommend the Toto model that fits that layout. Call (855) 901-7266 with your rough-in measurement if you know it, or we’ll measure it during the estimate.
Yes, and it’s a choice we make with Claremont’s design review process in mind. Toto designs are clean and understated, which reads as compatible with Craftsman and Period Revival architecture. A Drake or Ultramax II in white, combined with period-appropriate tile, tends to get through review without the friction that flashier fixtures provoke.
Service Areas Near Claremont
Our Toto work reaches beyond Claremont into the neighboring communities around Pomona and the San Gabriel foothills. We regularly travel into Toto service in Pomona, the ranches of La Verne and the Inland Empire edge, the neighborhoods around Foothill Boulevard and north Claremont, and down into Montclair. If you’re in the 91711 ZIP or nearby and want an experienced team for Toto installation or repair, give us a call. We also handle Toto service in Buena Park for clients who have moved between the two areas.
When you call, ask for Noel Carrington; he’ll tell you straight whether your Toto fixture is worth repairing or if replacement makes more financial sense. “Tell me what you actually need, and we’ll figure out the right way to build it.” That’s how we approach every Toto job in Claremont.
Written by Noel Carrington, Owner at San Mateo Construction. Noel has spent three decades working residential projects across San Mateo County and leads our Claremont team on Toto installations, bathroom remodels, and whole-home renovations.