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Toto Construction in Mountain View, CA | Viceroy Construction
We’re Viceroy Construction, and we service, install, and rebuild Toto toilets, washlets, and faucets across our Mountain View service area as an independent contractor. The thing that sets our Toto work apart here is that we know how these fixtures behave in mid-century Eichler homes with radiant slab heat and hard Santa Clara Valley water. Most Toto problems in Mountain View aren’t the fixture’s fault – they’re what the house does to the fixture. Call (877) 358-6557 for a free estimate, and you’ll get Neil Drummond’s crew, not a call center.
We work on the product. We don’t work for the manufacturer. That distinction matters when you need an honest repair-before-replace call on a $600 washlet seat.
Why Mountain View Residents Choose Us for Toto Service
Our team has rebuilt enough Toto washlets and dual-flush toilets in Mountain View bathrooms to know which OEM parts actually cross over between model lines and which aftermarket substitutes fail inside six months, whether it’s a standard repair or Toto repair in Loyola. Toto’s tolerances punish guesswork. A Drake II flush tower spacer that’s off by a couple millimeters will ghost-flush every night. A Washlet C5 inlet valve that’s been scaled by hard water needs the OEM rebuild kit, not a generic solenoid from a supply house.
Neil Drummond grew up in the Saratoga foothills and trained in the building trades program at West Valley College, where the framing, concrete, and structural coursework stuck with him. He still walks every Mountain View job himself before calling it done. The details you don’t see are the ones that matter most.
When we work on a Toto fixture in Mountain View, we’re also looking at the wall behind it, the supply line feeding it, and the floor under it. That’s the difference between fixing a symptom and fixing the cause. Our Toto sales & service work covers everything from a running Drake II to a full bathroom remodel built around a new Aquia IV and Washlet S550e.
Styles & brands we work with
Common Toto Construction Problems We Solve in Mountain View
- Washlet control boards that phantom-activate or stop spraying. In uninsulated Eichler bathrooms across Waverly Park and Monta Loma, the radiant slab cycles heat upward into the seat housing, and condensation forms on the control board overnight. We see corroded inlet valves and erratic self-activation on Washlet C5 and S550e seats that are otherwise in good shape. The fix is usually an OEM board and valve rebuild, plus relocating the supply away from the slab’s heat path.
- Drake II and Ultramax II toilets that lose flush volume. Hard water scales the Tornado Flush rim holes and the G-Max flush tower chain stretches, so the flapper doesn’t lift fully. The symptom is a weak, incomplete flush that slowly gets worse. We descale the rim, rebuild the tower with OEM Toto parts, and set the fill valve to the correct height for Mountain View’s water pressure.
- Leaks behind one-piece Toto skirts. Original single-wall plumbing in 1950s and 60s west-side Mountain View homes was never designed for modern fixture stop-valve pressure. The supply line behind a one-piece Ultramax II or Aquia IV can weep at the compression fitting, and the water wicks into the drywall before you ever see it on the floor. We find these during remodels and swap in new stop valves with proper escutcheons.
- Aquia IV dual-flush outlet valves that stick open. After a winter of low use, the outlet valve seal on an Aquia can stiffen and let tank water trickle past into the bowl continuously. Around Mountain View, the mild wet season means bathroom humidity spikes, and that accelerates seal wear. The valve assembly is rebuildable with OEM Toto parts – you don’t need a new toilet.
- Toto EcoPower sensor faucets that misfire or stop sensing. Mountain View’s hard water leaves mineral film on the sensor lens and scale inside the solenoid. EcoPower faucets rely on a microbattery charged by water flow, and scale reduces that flow enough to kill the charge cycle. We clean the solenoid, descale the aerator, and replace the sensor lens when it’s etched beyond recovery.
Toto Service in Mountain View: What Local Conditions Mean for Your Equipment
Here’s the thing nobody tells you about owning a Toto washlet in Mountain View: the house itself is part of the problem. In Waverly Park and Monta Loma, the original radiant floor slabs run inches below the bathroom tile, and those 1950s copper loops are still live in a lot of homes. Any Toto toilet swap or tub-to-shower conversion has to start with a scan and careful hand-digging to protect that copper. Punch a radiant line with a trenching tool, and you’re suddenly doing a concrete repair and re-pressurizing the whole loop. That constraint doesn’t exist on the newer infill townhomes near downtown or North Bayshore. It’s specific to the west-side Eichler tracts, and it changes how we sequence a bathroom remodel. We scan first, dig by hand, and set the new Toto fixture on a fresh flange without ever touching the slab. This is the part of our job that generic plumbing outfits in Mountain View skip, and it’s the part that saves you from a five-figure radiant repair six months later.
On a Waverly Park Eichler bath, we pulled a failing Toto Washlet C5 whose control board kept tripping after the radiant slab cycled. The seat sat over a floor with no insulation, and the inlet valve had scaled shut from hard water. We scanned the slab before trenching for the new drain, hand-dug around the original copper, set a Toto Drake II on a fresh flange, and routed the washlet supply through a new stop valve so the client got a working bidet seat without touching the radiant loop.
Toto Models & Products We Service in Mountain View
We service the Toto Ultramax II and Drake II one-piece toilets, the Washlet C5 and S550e electronic bidet seats, the Aquia IV dual-flush two-piece, and Toto EcoPower and Standard sensor faucets. Our parts approach is simple: we use OEM Toto fill valves, flappers, washlet internals, and flush tower components wherever the model is still supported. For discontinued seats where OEM stock is gone, we fall back to vetted aftermarket parts that we’ve tested on our own jobs. On a one-piece Toto, we recommend repair over replacement unless the bowl or trapway is cracked. The porcelain outlasts the trim by decades.
We stock common OEM rebuild kits locally so we’re not waiting on a parts shipment from a distributor across the Bay. That keeps Mountain View turnarounds short, especially during the fall when everyone wants bathroom work wrapped before the rainy season.
See the difference
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AfterToto Service Pricing in Mountain View
Toto repair and installation costs in Mountain View depend on what’s already behind the wall and under the floor. A simple Drake II flapper and fill valve rebuild runs at the low end. A full bathroom remodel centered on a new Toto Aquia IV, a Walk-In Shower, and a relocated drain in an Eichler slab runs at the high end. Here’s what we typically quote on Toto-related bathroom work in Mountain View, including Los Altos Hills Toto service:
| Service | Typical Mountain View Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
We give written line-item quotes before work starts. The estimate includes the fixture, the labor, the parts, and any slab scanning or hand-digging if you’re in an Eichler tract. Call (877) 358-6557 and we’ll walk the bathroom with you and give you a real number.
Serving Mountain View, CA — Our Local Coverage Area
We’re based in the Mountain View 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 Mountain View
Yes, but the install has to account for the heat. The washlet seat’s control board and inlet valve sit close to the slab’s heat path in Waverly Park and Monta Loma Eichlers, and condensation plus thermal cycling kills boards faster than anything else. We route the washlet supply through a new stop valve away from the heat source and sometimes add a small insulation barrier behind the seat housing. We’ve done this on multiple west-side Mountain View jobs and the seats hold up. Call (877) 358-6557 and we’ll take a look at your specific bathroom layout.
Nine times out of ten it’s the flush tower and fill valve, not the porcelain. Hard Santa Clara Valley water scales the G-Max flush tower seal and the fill valve loses its shutoff point, so the tank slowly bleeds water past the flapper. On Mountain View jobs, including Toto in Sunnyvale, we rebuild the tower with OEM Toto parts, descale the rim holes, and set the fill valve to the right height. If the tank still runs after that, we check the supply stop behind the wall – original single-wall plumbing in older homes corrodes and leaks in ways that mimic a running toilet.
For a direct toilet swap on an existing flange, no. For a tub-to-shower conversion or a shower replacement that moves a drain or touches the slab, yes. The City of Mountain View plan-check queue is notoriously long, so we pull the permit early and sequence the work around it. In Eichler tracts with radiant slabs, the permit also covers the pre-construction scan and hand-dig requirement – inspectors here want to see that you protected the copper. We handle permits and inspections as part of the project. Call (877) 358-6557 for specifics on your scope.
Yes. The Aquia IV’s outlet valve assembly is rebuildable with OEM Toto parts. The seal stiffens after a winter of low use and Mountain View’s mild wet season humidity, and tank water trickles past into the bowl. We replace the seal, clean the valve body, and adjust the flush actuator. You don’t need a new toilet, and we recommend the repair every time. Call (877) 358-6557 to have us diagnose the valve in your bathroom.
Cold supply water and condensation on the inlet valve, mostly. In Mountain View’s mild but wet winters, uninsulated bathroom walls and floors let condensation form inside the seat housing, and the inlet valve can scale shut when the water’s cold and mineral-rich. The fix is usually an OEM inlet valve rebuild plus relocating the supply line. Call (877) 358-6557 and we’ll pull the seat and confirm the failure point before quoting you.
Service Areas Near Mountain View
We handle Toto service across Mountain View’s 94039, 94040, 94041, and 94042 ZIP codes, and we regularly work in nearby cities. That includes Toto service in Communications Hill for hillside homes with steep bathroom drains, and Toto service in Los Altos for the older ranch tracts there. We also cover Saratoga, Cupertino, Campbell, and Monte Sereno. If you’re anywhere in the South Bay and have a Toto fixture acting up, call us – if we can’t get to you fast enough, we’ll say so.
Book Your Toto Service in Mountain View Today
Tell Neil’s crew what your Toto’s doing – or not doing – and we’ll give you a straight answer on whether it’s a rebuild or a replacement. Estimates are free, and we come out to your Mountain View home to look at the actual fixture, not photos. Call (877) 358-6557 to book your free estimate.
Written by Neil Drummond, Owner at Viceroy Construction, serving Mountain View and the South Bay since the day the old orchard land started sprouting Eichlers.