







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Toto Construction in Fontana, CA | Elmstead Remodeling
We provide independent Toto installation and repair across Fontana and Toto repair in Ontario, from Drake and Ultramax toilets to Washlet bidet seats and Neorest systems, and the one thing that makes our Toto work here different is that we plan for the expansive clay under the east-side slabs. That local soil movement is the reason so many Fontana bathrooms have rocking toilets and sheared wax rings that no amount of flange tightening will fix. Call (949) 850-9896 for a written estimate before any work starts.
Elmstead Remodeling has installed and serviced Toto fixtures in hundreds of Inland Empire remodels. We are not a Toto dealer and not manufacturer-authorized; we are an independent contractor, which means we can source parts where they cost less and recommend whichever fixture actually fits your bathroom, Toto or not. For Fontana homeowners, that independence matters when a Washlet control board fails and we tell you plainly whether the repair is worth doing. See our Toto sales & service page for the full range of what we cover.
Why Fontana Residents Choose Us for Toto Service

Graham Stein, our owner, has been working on homes across Southern California for nearly two decades and learned framing, finish work, and project sequencing at Los Angeles Trade-Technical College on South Grand Avenue. What he is known for is the kind of bathroom work where the toilet sits square on the flange and the cabinet doors close the same way ten years later. That is the standard we bring to every Toto installation in Fontana.
We know Toto rough-in requirements cold, from the 12-inch standard on a Drake to the specific electrical and water-supply needs of a Neorest. We also know Fontana’s housing stock: 1980s and 1990s tract homes with post-tension slabs that move with the seasons, and northern foothill neighborhoods along Baseline where steeper lots and retaining walls complicate bathroom layouts. We carry genuine Toto OEM parts for tank internals, wax rings, and supply lines, and we stock enough common parts to handle most Fontana service calls without a second trip. Every technician shows up in uniform, background-checked, with shoe covers and drop cloths going down before any work begins.
Styles & brands we work with







Common Toto Construction Problems We Solve in Fontana
- Rocking toilets and repeated wax ring failures. Fontana’s east-side neighborhood grid sits on expansive clay that shrinks through the dry season and heaves with winter rain, so post-tension slabs move enough to shear wax rings and stress flanges. We re-level the flange on a repair ring, reset the bowl with a reinforced wax seal and shim kit, and the toilet stays put.
- Fill valves, flappers, and flush tower gaskets degrading early. Fontana’s municipal water is chloramine-treated and mineral-heavy, and the 108°F-plus summer heat cycles the tank temperature hard. On Drake and Ultramax models, that combination shortens the life of tank internals. We replace them with genuine Toto OEM parts so the tolerances stay tight.
- Washlet and Neorest control board failures. Inland valley heat accelerates electronic degradation, and hard water scale builds up inside pump assemblies over years. We diagnose the board or pump honestly, price the repair, and when a $600-plus fix does not pencil out, we say so and walk through replacement options.
- Cracked or crazed older Ultramax bowls. When cold supply water hits a porcelain bowl in a garage-adjacent bathroom on a 110°F afternoon, thermal shock can craze the ceramic. We see this on the original 1990s-era Toto fixtures still in service across Fontana’s older tract sections.
- Slow tank-to-bowl leaks. These are often mistaken for a flapper problem but are frequently the flush tower gasket or the tank-to-bowl bolts loosening as temperature swings expand and contract the hardware. We check the whole stack rather than swapping one cheap part and hoping.
Toto Service in Fontana: What Local Conditions Mean for Your Equipment
Fontana’s east-side flat grid is built on expansive clay that shrinks dramatically during the long dry season and heaves with winter rains. That soil movement is not a footnote; it is the defining condition for anything bolted to a slab. The post-tension foundations under those 1980s and 1990s tract bathrooms drift enough that Toto toilet flanges and shower drain tie-ins routinely need re-leveling before a new fixture will seat properly. A bathroom remodeler doing Toto repair in Rancho Cucamonga or Redlands may never plan for that step; in Fontana, we budget for a structural engineer’s slab assessment on virtually any east-side remodel before finalizing a scope, because the diagonal cracking and differential settlement are that common. On a job off Baseline in the northern foothills, we pulled a 15-year-old Toto Ultramax that had been rocking on a heaving slab and shearing wax rings for years. We re-set the flange on a repair ring, reset the bowl with a reinforced wax seal and shim kit, installed a Toto Washlet C5 on the new vanity and a curbless walk-in shower with a linear drain pitched off the re-leveled subfloor. The homeowner has not had a leak call since.
Toto Models & Products We Service in Fontana
We work on the Toto Eco Ultramax and Ultramax II (MS604-series close-coupled toilets), the Drake and Drake II (CST743 and CST454 series), the Neorest integrated smart toilets (AH, AS, and RH series), and the Washlet bidet seat line including the S550e, C5, and K300. For flush valves, fill valves, flappers, and wax rings, we use genuine Toto OEM parts because the tolerances are tight and aftermarket clones cause repeat calls within a year. For Washlet and Neorest electronics out of warranty, we price the board or pump replacement against the cost of a new fixture and give you the straight answer. We stock common Toto tank internals and supply parts locally so most Fontana service calls finish same day.
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AfterToto Service Pricing in Fontana

Here are the price ranges we quote for Toto-related bathroom work across Fontana. These include the fixture, materials, labor, and our written scope of work.
| Project | Price Range |
|---|---|
| Full Bathroom Remodel (Toto fixtures included) | $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 the range is the same thing that drives every Fontana bathroom job: whether the slab has moved under the flange, whether the rough-in matches the new fixture, and whether the existing electrical can support a Washlet or Neorest seat. Your free estimate walks through all of it, line by line, before we ask you to sign anything. Call (949) 850-9896 for an exact quote on your project; estimates are free and the written price does not grow once the crew arrives.
Serving Fontana, CA - Our Local Coverage Area
We’re based in the Fontana area and know this community well, and we also handle Toto in San Bernardino and surrounding cities. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Fontana
It depends on the rough-in and the electrical. Washlet seats need a GFCI outlet within reach of the seat’s cord, and Neorest units need a dedicated circuit in many cases. A lot of Fontana’s 1980s and 1990s tract bathrooms were not wired for either, so we check the panel and the outlet location before recommending a unit. If the electrical needs work, we include that in the written estimate. Call (949) 850-9896 and we will walk through what your bathroom can support.
On Fontana’s east side, it is usually both. The running is typically the flush tower gasket or fill valve wearing out from hard water and heat cycling. The wax ring failing repeatedly is usually slab movement shearing the seal over time. We fix the internals with OEM parts and re-level the flange on a repair ring so the bowl stops rocking. Call (949) 850-9896 for a service visit and we will tell you which one is causing your leak.
We repair them when the board or pump assembly replacement makes financial sense relative to the cost of a new unit. Out of warranty, a control board can run several hundred dollars, and on an older Neorest facing repeated failures, we will tell you honestly if replacement is the better call. We never sell a repair that does not pencil out. Call (949) 850-9896 and we will price both options, in writing, before you decide.
Fontana’s mineral-heavy water and 108°F-plus summers accelerate scale buildup inside Washlet and Neorest pump assemblies and shorten the life of tank internals on every brand we service. Toto components hold up better than most because the tolerances are tighter and the seals are engineered for hard water, but the electronics still degrade faster here than they would in a coastal market like Riverside Toto service areas. We see it in the control boards and fill valves we pull out of Fontana bathrooms every month. For any Toto fixture question, call (949) 850-9896.
Most 1980s and 1990s tract bathrooms in Fontana were built with a standard 12-inch rough-in, so a Drake or Ultramax II drops right in. Where the slab has shifted and the flange needs re-leveling, we handle that before the new bowl goes down. We check the rough-in measurement on every job before recommending a model, so you are never guessing whether the toilet will fit. Call (949) 850-9896 for a free estimate on your replacement.
Service Areas Near Fontana
Our Toto service covers all of Fontana, including the north foothills along Baseline, the east-side tract grid, and the newer developments near the I-10 and I-15 interchange. We also serve surrounding Inland Empire communities, including Ontario, Rancho Cucamonga, Rialto, Colton, and the broader Fontana service area. For homeowners further out, we offer Toto service in Moreno Valley and Toto service in Oxnard through our nearby service teams.
Book Your Toto Service in Fontana Today
If you have a Toto fixture that is leaking, rocking, running, or just needs a professional installation in Fontana, call (949) 850-9896. We answer the phone with a live person around the clock, and we will schedule a free estimate that puts the price in writing before any work begins. The written scope is the promise; if it is not on the paper, we have not agreed to it yet.
Written by Graham Stein, Owner at Elmstead Remodeling, serving Fontana since 2005.












