Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Toto Construction in Los Gatos, CA | Rowan Construction Group San Jose
We provide independent Toto service across Los Gatos, from the historic downtown Craftsman homes to the hillside rebuilds above Highway 17. The one thing that makes our Toto work here different: we sequence every fixture rough-in around the Town’s discretionary design-review calendar, because in Los Gatos, a Bathroom Remodeling in Los Gatos that moves a toilet near a street-facing window can add 6-12 weeks before a shovel hits the ground. Call (669) 271-8644 to schedule your free estimate.
Why Los Gatos Residents Choose Us for Toto Service
We’ve installed and serviced Toto toilets, Washlets, and faucets across hundreds of Los Gatos and South Bay homes since 2007. Our crews know Toto’s proprietary fill valves, flush tower assemblies, and bidet-seat electronics by sight, and we stock genuine OEM parts for same-day resolution on most calls.
Grant Rowan, our owner, spent three straight years running residential crews through Willow Glen and the surrounding hills. He built this company on a simple discipline: document everything, explain what you’re doing and why, and don’t move to the next phase until the current one passes inspection. That means your Los Gatos Toto job gets a written price before anyone picks up a tool, a signed change order if anything shifts, and a photo record of what we found and what we fixed.
We’re not affiliated with Toto. We’re an independent contractor that happens to work on Toto equipment daily. Toto sales & service is one trade among our seven, and we treat it with the same flat-price, written-scope discipline we apply to full kitchen remodels and ADU builds.
Common Toto Construction Problems We Solve in Los Gatos

- Fill valve and flush tower wear. Toto’s proprietary fill valves and flush tower gaskets degrade faster in Los Gatos hillside homes on well or hard water. The result is ghost flushing at 2 a.m. and weak siphon action that leaves waste behind. We replace with genuine Toto OEM parts, not aftermarket copies that misalign with proprietary threads.
- Wax ring and flange deterioration from subfloor moisture. Properties above Highway 17 near Lexington Reservoir catch more coastal fog than the San Jose valley floor. That moisture softens subfloor framing, and a spongy subfloor under a Toto one-piece toilet compresses the wax seal until sewer odor and water staining appear at the base. We sister the joist, install a new flange, and reset on an OEM wax ring.
- Washlet electronic module and supply-line corrosion. The bidet seat’s control board and inlet screen clog with sediment and fry from power surges common in older 1950s-1970s ranch homes on the flatter eastern side of Los Gatos. Error codes or no spray follow. We diagnose whether the module, the screen, or the GFCI circuit is the actual failure point.
- Tank-to-bowl gasket and bolt corrosion. The tank bolts and spud gasket on Toto two-piece models rust and seep in damp, poorly ventilated bathrooms. This is especially common in unpermitted hillside remodels where exhaust fans were never upgraded to code. We replace the hardware with OEM-spec brass bolts and rubber gaskets rated for the actual humidity load.
- Seismic movement and flange stress. The 1989 Loma Prieta epicenter sits just miles away in the Santa Cruz Mountains. Ongoing minor settling in hillside neighborhoods shifts toilet flanges microscopically over years, stressing wax rings and causing intermittent leaks that homeowners mistake for seal failure. We check flange level and subfloor integrity before blaming the Toto.
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AfterToto Service in Los Gatos: What Local Conditions Mean for Your Equipment
Los Gatos sits at the mouth of the Santa Cruz Mountains, and that geography creates a dual burden no neighboring flatland city matches. Los Gatos service area hillside properties, particularly those above Highway 17 near Lexington Reservoir, fall within California’s Very High Fire Hazard Severity Zone and sit on steep, unstable terrain shaped by the Loma Prieta fault zone. For Toto owners, this means two things.
First, the coastal fog and moisture that roll over those hills accelerate wood rot in eaves, decks, and subfloor framing. A Toto toilet installed on a softening subfloor will fail at the wax ring repeatedly until the structural issue is addressed. Second, the Town of Los Gatos Community Development Department requires discretionary design review for most exterior alterations visible from a public street, including additions and material changes. A bathroom remodel that relocates a Toto toilet or adds a curbless shower near a street-facing window triggers that 6-12 week architectural consistency hearing. We sequence Toto fixture and drain-line rough-in around that review calendar, not the other way around. Measure twice, permit once, then we talk timeline.
Toto Models & Products We Service in Los Gatos

We work on the full Toto residential line, with deep parts familiarity on the models we see most often in Los Gatos homes:
- Toto Drake and Drake II (CST744, CST454 series) - the two-piece workhorse found in countless 1990s hillside rebuilds; we stock OEM fill valves, flush towers, and tank-to-bowl gaskets for same-day repair.
- Toto Ultramax II (MS604 series) - one-piece design with a skirted trapway; wax ring and flange access is tighter, so subfloor condition matters more.
- Toto Aquia IV (MS646 series) - dual-flush skirted bowl with a proprietary mounting system; aftermarket hardware kits often fail to seat properly.
- Toto Washlet and S7/S550e electronic bidet seats - control boards, inlet screens, and deodorizer filters; we source OEM modules when available and advise honestly when a discontinued Washlet is better replaced.
For discontinued models, we source verified OEM-compatible parts and tell homeowners straight when a 15-year-old Toto is better replaced than repaired. No part gets installed without confirming it matches Toto’s proprietary threads and pressure specs.
Toto Service Pricing in Los Gatos
Every Toto job in Los Gatos gets a flat written price before work starts. No exceptions. Below are the line-item ranges for bathroom work that typically includes Toto fixture service, installation, or replacement:
| Service | Price Range in Los Gatos |
|---|---|
| Bathroom Remodel | $9,000-$28,000 |
| Walk-In Shower Installation | $4,500-$12,000 |
| Small Bathroom Remodel | $5,000-$12,000 |
| Bathroom Vanity Installation | $800-$3,000 |
What drives cost: whether we’re repairing a single Toto component or rebuilding the bathroom around it; whether the subfloor needs sistering; whether the Town’s design review adds calendar time; and whether the home sits on the fog-prone hillside or the drier eastern flats. Our written quote includes a line-item scope, a 365-Day Done Right Promise, and a documented photo record. Call (669) 271-8644 for an exact quote - estimates are free.
Serving Los Gatos, CA - Our Local Coverage Area

We’re based in the Los Gatos 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 Gatos
Most spraying issues are repairable. We check the inlet screen for sediment, test the control board for power-surge damage, and verify the GFCI circuit. If the module is fried and the Washlet is current-generation, we source an OEM replacement. For discontinued Washlet models, we’ll tell you honestly when replacement makes more sense. Call (669) 271-8644 for an exact quote - estimates are free.
Yes, with the right model and proper adjustment. Toto’s pressure-assisted and gravity-fed lines perform differently at low pressure; we spec the correct fill valve and verify static pressure at the stop valve before installation. Homes on private wells above Highway 17 may need a pressure-boosting strategy.
It can. The Town requires discretionary design review for exterior-visible alterations, including street-facing window changes. If your bathroom remodel moves a Toto toilet or adds a curbless shower near such a window, we submit the exterior documentation early and sequence rough-in after approval. This adds 6-12 weeks but prevents a mid-project stop-work order.
The fill valve or flush tower gasket has degraded. In Los Gatos, hard water and mineral content accelerate wear on Toto’s proprietary components. We replace with genuine OEM parts, not aftermarket copies that misalign and leak again in six months.
Absolutely. On a 1960s ranch home off Kennedy Road in eastern Los Gatos, we rebuilt a bathroom around a sound Toto Ultramax II - the bowl and tank were fine, only the fill valve, flush tower, and seal needed service - as part of a larger Kitchen Remodeling - Los Gatos and whole-home update. We finished inside the Town’s design-review timeline by submitting the exterior window change early. If your Toto is structurally sound, we’ll tell you so.
Service Areas Near Los Gatos

We run Toto service calls across the South Bay from our San Jose base. Nearby areas include Toto service in San Jose, Toto service in Campbell, Santa Clara, Milpitas, and Saratoga. Each gets the same flat-price, written-scope discipline, with local permit knowledge built in.
Book Your Toto Service in Los Gatos Today
Call (669) 271-8644 to schedule your free estimate. A live person answers 24/7. We’ll deliver a written price before any work starts, sequence around Los Gatos design review if your project requires it, and leave you with a documented photo record of everything we found and fixed.
Written by Grant Rowan, Owner at Rowan Construction Group San Jose, serving Los Gatos since 2007.







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