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Toto Construction in El Granada, CA | San Mateo Construction
We service, rebuild, and install Toto toilets, washlets, and fixtures across El Granada, CA. The one thing that makes our Toto work different here is that we already know how salt air, coastal fog, and the Coastal Zone permitting process affect every fixture swap and rough-in on this stretch of the San Mateo coast. Call (855) 901-7266 for a free estimate. We’re an independent Toto sales & service contractor, not factory authorized, and we’ll give you a straight answer on repair versus replacement.
Why El Granada Residents Choose Us for Toto Service
Most plumbers can replace a flapper. What they can’t always tell you is why your new Toto washlet board died after three years in El Granada when the same unit inland runs for seven. That’s the difference. We’ve torn apart enough Toto Drakes and Washlet C5s in coastal bathrooms to know exactly what the fog belt does to electronics, what salt spray does to skirted toilet hardware, and when a $40 rebuild makes more sense than a $900 replacement. Noel Carrington, our owner, grew up a few blocks from Coyote Point in San Mateo and studied construction technology at Skyline College before spending three decades on residential work across San Mateo County. He’s been on enough El Granada job sites to know what county inspectors look for and where coastal review changes the scope of a simple bathroom fixture upgrade. Tell me what you actually need, and we’ll figure out the right way to build it.
We’re a full-service El Granada service area contractor, which means the same crew handling your Toto rough-in can also handle the tile, the vanity, the shower pan, and the permit package. That’s not a convenience pitch. It’s the practical reality of working in a tight coastal grid where you don’t want three separate trades trying to coordinate around a county inspection schedule.
Styles & brands we work with







Common Toto Construction Problems We Solve in El Granada
- Washlet electronic board failure from fog-belt humidity. The Washlet C5, S550e, and K300 bidet seats use sealed control boards, but “sealed” doesn’t mean immune to years of persistent west-facing moisture. We regularly replace fogged-out boards on homes along the flatlands, where the marine layer sits longer. Heated seat, warm water, and bidet functions drop out one by one. We use genuine Toto OEM boards, not aftermarket clones that fail faster in the same conditions.
- Phantom running and high water bills from fill valve and flapper wear. El Granada’s water blend runs mineral-heavy, and Toto Drake and Drake II fill valves accumulate scale faster than inland. If your toilet runs in short bursts at night, that’s usually the flapper not seating. On a Drake II, the OEM flapper is cheap and the fix is quick. We stock them for service calls in 94018.
- Seized skirted toilet hardware on salt-exposed slabs. Toto Aquia and skirted bowl closet bolts on ground-floor bathrooms near the water corrode and seize. What should be a simple pull-and-reset becomes cutting and re-anchoring. We’ve done enough of these on mid-century El Granada ranchers to budget the extra labor up front instead of surprising you with it.
- Slow tank-to-bowl gasket and supply line leaks. One-piece Toto models like the Ultramax II and EcoPromenade have gaskets that degrade under moisture cycling and wind-driven spray. These leaks are slow and often hidden, staining coastal subfloor and tile before anyone notices. If your Toto one-piece shows a faint water line at the base or a musty smell near the flange, call us before the subfloor rots.
- Rough-in mismatches on older El Granada bathrooms. The early-1900s beach bungalows and cabins scattered through El Granada have rough-in measurements that don’t match modern Toto skirted bowls. We handle the floor patching, flange resetting, and supply relocation that makes a new Toto fit without butchering the original framing.
Toto Service in El Granada: What Local Conditions Mean for Your Equipment
Here’s something you won’t read on a generic Toto page: El Granada sits in the unincorporated county Coastal Zone, so swapping a toilet or roughing in a new Toto fixture during a bathroom remodel can trigger county building review and, in some cases, a Coastal Development Permit. That’s paperwork a Peninsula city like San Mateo or Burlingame never asks for. On a mid-century ranch off Sonora Avenue near the flatlands, our crew opened a hall bath and found a Toto Drake with a rusted-out fill valve and a seized closet bolt, plus a Washlet C5 whose board had fogged out. We rebuilt the toilet with OEM Toto internals, re-anchored it on a fresh wax ring, replaced the washlet control board, and re-tiled the surround where the old flange had leaked, all while keeping the fixture swap inside the county’s coastal permit scope. The point is that Toto work in El Granada isn’t just a plumbing call. It’s a permit-aware construction task, and we handle the whole thing as one scope. That’s the difference between a contractor who works *on* the coast and one who just drives over from the Peninsula.
Toto Models & Products We Service in El Granada
We work on the full range of Toto residential fixtures, including:
- Toto Drake and Drake II (CST743 and CST454 series) two-piece toilets
- Toto Aquia and Aquia IV dual-flush skirted toilets
- Toto Washlet C5, S550e, and K300 bidet seats and integrated washlet units
- Toto Ultramax II and EcoPromenade one-piece toilets
- Toto lavatory faucets, vessel sinks, and bath hardware
For parts, we use genuine Toto OEM fill valves, flappers, wax rings, and washlet components. Aftermarket internals fit loosely and fail faster in coastal humidity, so we don’t put them in your bathroom to save a few dollars. We keep common OEM rebuild parts in our service stock for faster El Granada turnaround. If you need a part we don’t carry, we order direct from our Toto parts supplier and schedule the follow-up before we leave.
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AfterToto Service Pricing in El Granada
What you’ll pay for Toto-related work in El Granada depends on whether you’re rebuilding an existing fixture or installing new during a remodel. Here’s how the numbers break down:
| Service | El Granada Price Range |
|---|---|
| Full Bathroom Remodeling | $9,000 – $28,000 |
| Small Bathroom Remodels | $5,000 – $12,000 |
| Tile & Fixtures | $800 – $2,500 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
A simple Toto fill valve and flapper rebuild runs under $200 including parts and labor. A washlet board replacement lands between $250 and $450 depending on the model. Full Toto fixture installation during a remodel falls inside the bathroom remodel range above. Every estimate is free, written, and line-item, so you know exactly what you’re paying for before we start. Call (855) 901-7266 to schedule yours.
Serving El Granada, CA — Our Local Coverage Area
We’re based in the El Granada area and know this community well, and we also provide Half Moon Bay Toto service. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in El Granada
No. San Mateo Construction is an independent general contractor serving El Granada and the wider San Mateo County coast. We install and service Toto fixtures regularly — including Toto in Moss Beach — and source genuine Toto OEM parts, but we’re not authorized, sponsored, or endorsed by Toto. That independence is why we can give you a straight repair-or-replace call without a manufacturer’s interest in steering you toward a new unit.
Yes. A lot of El Granada’s older bungalows and cabins have bathrooms that were originally built around compact floor plans, and modern Toto bowls don’t always drop into the same footprint. We handle the flange resetting, supply relocation, and floor patching that makes a new Toto fit without eating a closet. On the tighter floor plans, we’ll often recommend a Toto Aquia IV for its smaller bowl profile and dual-flush valve placement, and we offer Montara Toto service for similar coastal homes. Call (855) 901-7266 for an El Granada-specific fit assessment.
Most Toto rebuilds, flapper and fill valve replacements, and washlet board swaps are done in a single visit, usually two to three hours. Larger work like a full Toto rough-in during a bathroom remodel runs on the project timeline you agree to ahead of time. Coastal permits can add a week or two depending on county review, and we factor that into the schedule up front so you’re not surprised.
Genuine Toto OEM. We don’t install aftermarket fill valves, flappers, washlet boards, or wax rings on Toto fixtures. Aftermarket internals fit loosely and corrode or fail faster in El Granada’s salt and fog conditions. The cost difference is small, and OEM parts last measurably longer out here. If a part is discontinued, we’ll tell you and walk you through the best available option.
A Washlet C5, S550e, or K300 control board replacement typically runs $250 to $450 including the part and labor, depending on the model and whether we need to open the seat housing. If the board has been fogged out for more than a season, we’ll check the wiring harness too, because coastal moisture travels. On older washlets where the board plus the heater element are gone, we’ll tell you honestly if a new seat makes better sense than a repair. Call (855) 901-7266 and we can give you an exact number for your model.
Service Areas Near El Granada
We work all over the San Mateo County coast and the Peninsula. In addition to El Granada, our Toto service area covers Toto service in Brisbane and Toto service in Pacifica, plus San Mateo, Burlingame, Foster City, Belmont, and the Highlands-Baywood Park neighborhoods. If you’re near El Granada but not sure we cover your street, call (855) 901-7266 and ask.
Book Your Toto Service in El Granada Today
If your Toto Drake is running at night, your washlet board is dead, or you’re planning a bathroom remodel in El Granada — or need Toto in Hillsborough — and want Toto fixtures done right, call (855) 901-7266. We’ll schedule a free estimate, walk through the scope with you, and price the work in writing before anything starts. Same-day service is available for fill valve and flapper failures in the 94018 area when our schedule allows.
Written by Noel Carrington, Owner at San Mateo Construction, serving El Granada and San Mateo County.