Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Toto Construction in Sunnyvale, CA | Toolbox Contractors
We provide independent Toto service and installation across Sunnyvale, from home remodeling that keeps your existing Drake running to complete Washlet retrofits in Eichler-style ranches. The difference here isn’t just Toto familiarity. It’s knowing that a toilet swap in Sunnyvale often triggers flange repair on aging slab floors and a permit review that outpaces most nearby cities. If your Toto is acting up or you’re planning a remodel that involves one, call Norm Castellano and the team at (855) 382-3257. We’re the crew that pulls your Toto, fixes what’s underneath it, and sets it back correctly.
Why Sunnyvale Residents Choose Us for Toto Service
Most plumbers can reset a toilet. Fewer know that a weak-flushing Toto Drake in a 1950s Sunnyvale rancher is usually not the Drake’s fault. It’s the cast-iron closet flange rusted in the slab or the rim jets scaled shut after decades of hard water. We’ve been pulling Toto Drakes, Ultramaxes, and Washlets out of Sunnyvale bathrooms long enough to tell the difference fast. Norm Castellano grew up around half-finished houses in Muscoy, learned the fundamentals at San Bernardino Valley College, and spent close to two decades doing framing, roofing, and full kitchen gut-and-rebuilds before running Toolbox Contractors. That generalist background means we handle the rough-in, the electrical for a new Washlet, and the tile and vanity, not just the toilet — the kind of full-scope work you’d expect from a general contractor in Sunnyvale. One contractor, every phase. We’re an independent Toto service crew. We’re not authorized, sponsored, or warranty-endorsed by Toto. What we bring is real familiarity with their line and the Sunnyvale-specific conditions that surround it.
Styles & brands we work with







Common Toto Construction Problems We Solve in Sunnyvale
- Rim jets scaling shut on original Drakes and Ultramaxes. In Sunnyvale’s older ranch homes, the two-piece Toto Drake and one-piece Ultramax II installed decades ago are hitting their service life at the same time. Rim jets calcify, fill valves whistle, and the flush gets noticeably weaker. It looks like the fixture is failing when the real issue is mineral buildup the 1.28 gpf profile can’t push through.
- Wax-ring seep at the base from failing slab flanges. The 1950s-60s stock in Sunnyvale sits on slabs, and many original closet flanges are cast iron. Seasonal soil movement shifts them, the flange rusts or drops out of level, and a seep appears at the toilet base. That’s a flange problem, not a Toto defect. We re-flange before resetting the bowl.
- Washlet and Neorest electronics failing from the wrong circuit. A Toto Washlet seat or Neorest integrated unit tapped off an existing bath GFCI or lacking a dedicated circuit will trip repeatedly or cook the control board. In older Sunnyvale homes with early aluminum wiring or undersized original panels, this has to be corrected before install, or the electronics fail again.
- Tank condensation and seal breakdown on Eichler-era flat-roof homes. Sunnyvale’s Eichler-influenced tracts vent baths through shallow roof assemblies. Moisture and condensate reach the fixture area, accelerating tank condensation, hose stiffening, and seal breakdown on Toto one-piece units. The fixture takes the blame, but the ventilation is the root cause.
- Rough-in no longer matching the remodeled room layout. When a Sunnyvale ranch bath gets reconfigured, the old 12-inch rough-in often doesn’t fit the new vanity or shower footprint. We tell you whether the existing Toto can be repaired and reused or whether the porcelain is past saving and a new bowl with a different rough-in makes more sense.
Toto Service in Sunnyvale: What Local Conditions Mean for Your Equipment
Sunnyvale’s plan review and inspection process is famously painstaking, and the city enforces strict green-building and stormwater rules on remodels. A bath remodel that swaps a Toto toilet for a high-efficiency model, or adds a Washlet seat, is often checked against current water-efficiency and electrical requirements the original 1950s-60s bathroom never had to meet. That means a simple fixture change can become a documented water-savings calculation or a dedicated-circuit correction before the inspector signs off. On an Eichler-influenced ranch in the 94087 tracts, our crew uncovered a rusted cast-iron closet flange sitting slightly out of level in the shallow slab. The homeowner wanted to keep the existing Toto Ultramax II. We cut and reset the flange, re-leveled the subfloor patch, and reset the one-piece with a fresh wax seal and a dedicated GFCI circuit for the new Washlet seat. The city inspector approved the rough-in before the tile went down. The toilet that had been blamed for a chronic seep was actually fine once the flange under it was corrected. That’s the Sunnyvale reality: the fixture is rarely the whole story.
Beyond fixtures, the same full-scope approach applies to the work that surrounds every Toto swap. If the remodel opens up walls and we find underpowered wiring to the bath, that correction gets handled in the same contract, placed in the same schedule, and backed by the same team. If the vanity and shower are coming out anyway, those are handled too. From the cabinets to the roof, inside and out, this isn’t a subcontractor handoff. It’s one accountable crew, which matters when Sunnyvale’s inspectors start asking questions and the answers need to be consistent. See what we cover across Toto sales & service or the full Sunnyvale service area.
Toto Models & Products We Service in Sunnyvale
We work on the Toto line you’re most likely to find in Sunnyvale homes: the two-piece Drake at 1.28 gpf, the one-piece Ultramax II, Washlet seats in the C100 and S350e class, and the integrated Neorest smart toilet. For repairs, genuine Toto fill valves, flappers, gaskets, and Washlet components are our default. We avoid aftermarket fill valves on a 1.28 gpf Toto because they change the flush performance and tend to be why a toilet is running again inside a year. For older Drakes and Ultramaxes, we repair when the porcelain, trapway, and flange are sound, and recommend replacement when the bowl is scaled past cleaning or the rough-in no longer works for the room. We stock the common Toto parts for fast turnaround in Sunnyvale’s 94089, 94085, 94086, and 94087 ZIP codes, plus we also service Toto in Cupertino.
See the difference
Before
After
Before
After
Before
AfterToto Service Pricing in Sunnyvale
Here’s what Toto work and the bathroom scopes around it typically run in Sunnyvale. These are the numbers we quote, and the free estimate confirms the exact figure before any work starts.
| 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 |
| Shower Replacement | $3,000 – $8,500 |
Cost moves on whether we’re repairing your existing Toto or replacing it, whether flange repair is needed, and whether the electrical has to be brought up to code for a Washlet. The estimate walks through all of that line by line. Call (855) 382-3257 to schedule yours. Tell me what you’ve got and I’ll tell you what it actually needs.
Serving Sunnyvale, CA — Our Local Coverage Area
We’re based in the Sunnyvale area and know this community well, and we also work on Toto in Santa Clara. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Sunnyvale
Usually yes. If the porcelain is sound, the trapway is clear, and the rough-in works with the new layout, we reset your existing Toto after addressing whatever’s underneath it. Flange repair, level checks, a fresh wax seal. Call (855) 382-3257 and we’ll tell you if yours is worth keeping.
It can. Sunnyvale’s plan review is strict, and a new dedicated circuit for a Washlet or Neorest is electrical work that often triggers permit review, especially in older homes with aluminum wiring or undersized panels. We handle the permit scope when we scope the job. Call (855) 382-3257 for a free estimate on the full correction.
If the water level is correct and the fill valve isn’t running, the usual culprits in Sunnyvale are scaled rim jets or a flange that’s shifted in the slab. We inspect both before recommending any replacement. Many weak-flushing Drakes are fine once the jets are descaled and the flange is reset. Call (855) 382-3257 and we’ll diagnose it against what we see in this city’s housing stock.
Yes. A 1.28 gpf Drake or a Washlet-equipped Ultramax II meets current water-efficiency thresholds Sunnyvale enforces on remodel permits. We document the fixture flow rate and any electrical correction so the inspection doesn’t stall. Free estimates at (855) 382-3257.
Often yes, but the venting should be checked. Eichler-era baths vent through shallow roof assemblies, and condensate issues can affect seal life on one-piece units. We assess the vent run before we recommend a fixture. Call (855) 382-3257 and we’ll take a look.
Service Areas Near Sunnyvale
We cover Sunnyvale’s 94089, 94085, 94086, and 94087 ZIP codes. For work across the broader valley, see Toto service in Loyola and Toto service in Mountain View. We also run Toto jobs in San Bernardino, Colton, Muscoy, Loma Linda, Rialto, and Highland.
Book Your Toto Service in Sunnyvale Today
Call (855) 382-3257 to schedule your free estimate. We’ll look at the fixture, the flange, the circuit, and the room around it, then give you a written line-item quote for exactly what the job needs. No runaround, no subcontractor shuffle. One contractor, every phase.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Sunnyvale and the surrounding valley.