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Toto Construction in Los Serranos, CA | Square Deal Contractors
We provide independent Toto service across Los Serranos, covering everything from a running Drake toilet to a full bathroom remodel built around your existing Toto fixtures. What makes our work different here is simple: Los Serranos sits on an unincorporated San Bernardino County island, so permits and inspections run through the county, not Chino Hills. That changes how a Toto install, re-set, or remodel gets planned, and Nolan Breckett’s crews—who also provide Yorba Linda Toto service—know the county’s plumbing and venting expectations cold. Call (866) 623-7205 for a free estimate.
Why Los Serranos Residents Choose Us for Toto Service
We’re an independent Toto service provider, not affiliated with or authorized by Toto. That independence means we diagnose and fix Toto fixtures honestly, without a manufacturer pushing replacement inventory at you. We work on Toto toilets, faucets, and tubs more than most any general contractor in the Chino Hills area, and we also handle Toto service in Chino and surrounding communities, knowing the line-by-line parts and repair quirks better than a generalist. When a Drake or Ultramax II is worth saving, we say so and fix it. When the bowl or electronics are genuinely past saving, we tell you that too, with a straight number for what replacement would cost.
Nolan grew up in Baker Ranch and learned construction through Saddleback College’s construction technology program. He built his reputation on being straight about timelines and honest about costs. That carries into every Toto job we take in Los Serranos. We prefer genuine Toto OEM fill valves, flappers, and Washlet parts for fit and longevity, but we’ll use a quality aftermarket supply or connector where the OEM part adds cost without adding life. For broader Toto product expertise, see our Toto sales & service page.
Styles & brands we work with







Common Toto Construction Problems We Solve in Los Serranos
- Drake fill and flush valves failing under hard inland water. Los Serranos water runs hard, and mineral buildup shortens the life of Toto Drake fill valves and flush valves. Owners hear constant running, see higher water bills, and occasionally get a weak flush. We swap in OEM valves and set the water level correctly, which usually fixes it for years.
- Wax ring and flange seals degrading in older ranch bathrooms. Many Los Serranos homes are mid-century ranch builds from the 1950s-70s, and those original cast-iron flanges are often rusted or cracked. A Toto Drake installed on a bad flange starts rocking and leaking at the base. We pull the toilet, replace the flange, and reset the bowl on a fresh seal.
- Washlet electrical components and supply hoses aging faster on hillside homes. The hillside builds along Los Serranos get intense Santa Ana heat cycles, and Washlet seats mounted there see more thermal stress on wiring and supply hoses. We check connections, replace brittle supply lines, and test the seat’s controls before it fails mid-cycle.
- Aquia dual-flush cartridges sticking or weeping. Sediment from older plumbing lines, especially on properties with agricultural or equestrian well water, gets into Aquia dual-flush cartridges and causes them to stick or leak. We clean or replace the cartridge, which usually restores the half-flush and full-flush function without replacing the toilet.
- Fixture relocations and remodels that need county plan check. If you’re remodeling a bathroom in Los Serranos and moving a Toto toilet or changing drain lines, the work runs through San Bernardino County plan check and inspections. Contractors who assume Chino Hills rules get red-tagged. We sequence the plumbing to county code from day one.
Toto Service in Los Serranos: What Local Conditions Mean for Your Equipment
Los Serranos is an unincorporated San Bernardino County island surrounded by Chino Hills, and that jurisdictional seam changes how Toto construction work actually gets done here. A bathroom remodel that swaps a Toto toilet or relocates a fixture runs through county plan check and inspections, not Chino Hills, and county inspectors flag plumbing and venting details that a neighboring city would pass. Builders who assume city rules get red-tagged, and that stalls the whole job. On a mid-century ranch home off Los Serranos Country Club Drive, our crew was re-tiling a hall bath and re-setting the owner’s Toto Drake. Pulling the original toilet exposed a rusted-out cast-iron flange and a failed wax seal. We replaced the flange, reset the Drake on a new seal, and swapped in an OEM fill valve so the tank stopped the constant running that came from the hard local water. The job passed the county’s plumbing inspection on the first walk-through. If you’re planning Toto work in Los Serranos, that’s the difference: we know what the county will flag before the inspector shows up. Know what you’re getting into before the first nail goes in.
Toto Models & Products We Service in Los Serranos
We service the Toto models most common in Los Serranos homes: Drake CST743 and CST744 two-piece toilets, Ultramax II one-piece toilets, Aquia dual-flush toilets, and Washlet bidet seats including the C100 and S550e. For parts, we stock common OEM fill valves, flappers, and Washlet supply connectors locally, so most Los Serranos repairs don’t wait on a parts order. On a solid Toto bowl, we repair or re-seat rather than replace. A Drake or Ultramax II is worth fixing, and we’ll tell you honestly when the bowl or electronics are truly past saving. For the bigger picture of what we do, see our Los Serranos service area page.
See the difference
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After
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AfterToto Service Pricing in Los Serranos
| 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 on a Toto-related remodel in Los Serranos is scope: moving a toilet or drain line means county plan check and inspection, and that adds time and cost compared to a straight fixture swap in place. A free estimate from us lays out the line items so you know what’s labor, what’s parts, and what’s permit work before you sign anything. Call (866) 623-7205 to schedule yours.
Serving Los Serranos, CA — Our Local Coverage Area
We’re based in the Los Serranos 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 Los Serranos
Yes, if you’re moving the toilet, changing drain or vent lines, or altering the bathroom’s footprint, you need a San Bernardino County permit and inspections. A straight swap of a Toto toilet in the same spot does not require a permit, but any relocation does. Call (866) 623-7205 and we’ll tell you what your scope triggers before you start.
The most common cause in Los Serranos is hard inland water wearing out the fill valve or flush valve, which causes constant running and higher water bills. We replace the failing part with an OEM Toto valve and set the water level to spec. If it’s been running for months, call (866) 623-7205 for a free estimate on the fix.
Yes, a Washlet can be added to most Toto bowls if there’s a GFCI-protected outlet near the toilet. Older 1950s-70s Los Serranos ranch bathrooms often lack that outlet, so we include a dedicated circuit in the remodel scope. We install the seat, test the controls, and make sure the supply connection is secure.
Yes, we match the model and color of your existing Toto toilet when the remodel keeps the same footprint and plumbing. If the bowl is in good shape, we recommend re-setting it on a new flange and seal rather than replacing it. Call (866) 623-7205 and we’ll give you an honest read on what’s worth keeping.
Yes, we service Toto fixtures in Los Serranos hillside homes and coordinate with any exterior fire-hardening scope running alongside the bathroom work, such as ember-resistant venting or Class A roofing. Interior plumbing work proceeds independently, but we sequence it so county inspections don’t collide. Call (866) 623-7205 for a scope review.
Service Areas Near Los Serranos
We serve Los Serranos and the surrounding communities, including Chino Hills, Eastvale, Norco, and the wider Chino Valley. For Toto service in nearby communities, see our Toto service in Sedco Hills page or our Toto service in Eastvale page.
Book Your Toto Service in Los Serranos Today
If your Toto fixture is running, leaking, or part of a remodel you’re planning in Los Serranos—or you need Pomona Toto service—call (866) 623-7205. We’ll schedule a walk-through, give you a written estimate, and tell you exactly what the county will require. Same-day service is available for urgent toilet failures.
Written by Nolan Breckett, Owner at Square Deal Contractors, serving Los Serranos and the Chino Valley.