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Toto Construction in La Verne, CA | Gold Star Contractors
Gold Star Contractors provides independent Toto service across La Verne, from Old Town bungalows to foothill-adjacent ranch homes that back up toward the San Gabriels. We handle everything from re-setting a Drake during a bathroom remodel to diagnosing a Washlet seat that quit after a hot, dry summer. The one thing that makes our Toto work different in La Verne is simple: we know this housing stock, and we know how skirted-trapway Toto models behave when the closet flange sits below a raised tile floor in a 1960s ranch. Call (833) 382-8544 for a straight answer on repair versus replacement.

Why La Verne Residents Choose Us for Toto Service
We’ve rebuilt and re-set enough Toto in Pomona and the wider Pomona Valley to know the brand’s quirks cold. The tower-style fill valves, the skirted trapway wax seals, the electronic bidet seat failures that show up after a dry La Verne summer. Owner Noel Carranza spent years running multi-trade jobs across Orange County before building Gold Star Contractors, and he brings that same no-drama approach to every Toto service call in La Verne. One call, done right – that’s the only way we know how to run a job.
We’re an independent contractor and not authorized, sponsored, or endorsed by Toto. That matters because our advice on repair versus replace is based on what we actually find in your bathroom, not a dealer script. When a Toto bowl and china are still good, we say so. When a Washlet control board is beyond economical repair, we tell you that too. For La Verne homeowners, it means honest answers from Toto sales & service specialists who work for you, not the manufacturer.
Styles & brands we work with







Common Toto Construction Problems We Solve in La Verne
- Hard-water scaling on G-Max fill and flush internals. La Verne’s water leaves mineral crust on the flush tower and fill valve, and our hot, dry summers mean standing water in tanks evaporates and concentrates that scaling. We strip and rebuild the internals with OEM Toto parts, or replace the tower when the pitting is too far gone.
- Wax-ring and flange failures on skirted-trapway models during remodels. When a bathroom gets new tile in La Verne, the finished floor height rises. The old closet flange ends up below the tile, the wax seal blows out after the first flush, and the leak is hidden until the subfloor softens. We re-set flanges to the correct height before installing a new OEM wax ring.
- Washlet and Neorest electronic seat failures after summer heat. Uninsulated bathrooms in 1950s – 70s ranch homes bake all summer. We see clogged water inlet screens from hard water, cracked supply hoses from heat cycling, and dead seat sensors or control boards. We diagnose exactly which part failed before recommending a repair.
- Tank-to-bowl gasket and bolt corrosion on Ultramax one-pieces. Older Ultramax installations in La Verne sometimes develop slow weeping leaks at the tank-to-bowl connection. In a 1960s ranch bathroom, that leak can rot the subfloor before anyone notices. We catch it during remodels and replace the gasket and bolts with OEM parts.
- Fill valve failures tied to mineral crust in La Verne’s water supply. If your Toto keeps running or the tank refills slowly, the fill valve is almost always the culprit. La Verne’s hard water pits the internal seals over time. We replace with OEM Toto fill valves that hold up better than generic aftermarket parts.
Toto Service in La Verne: What Local Conditions Mean for Your Equipment
La Verne’s north-side homes backing toward the San Gabriel foothills often sit on raised foundations and slab-on-grade mixes from the 1950s – 70s, so when we pull a Toto to remodel a bath, the closet flange height and floor buildup rarely match a flat tract-home install. We have to reset flanges to keep the skirted trapway sealing. That mix of older wood-frame structure and hillside-adjacent lots is not something the flatland Inland Empire tract cities deal with. On a 1960s ranch off Bonita Avenue near Old Town La Verne, we pulled the owner’s Toto Ultramax II for a full bath remodel and found the original closet flange sitting nearly an inch below the new tile height, which had been masking a weeping wax seal and soft subfloor. We rebuilt the flange to the correct height, set a new OEM wax ring and Toto tank-to-bowl gasket, and re-set the one-piece – no new toilet needed, and the leak stopped. We also replaced a failing Washlet seat supply line and inlet screen that had clogged from La Verne’s hard water. That’s the kind of work La Verne service area homeowners call us for: the problem hiding under the surface, not just the symptom you can see.
Toto Models & Products We Service in La Verne
We work on the full range of Toto products you’ll find in La Verne homes, including the Drake two-piece gravity line (CST743/CST744), the Ultramax II one-piece (MS604114CEFG), Nestore and Washlet electronic bidet seats (S350e/S550e/SW series), and the EcoPromenade and Vespin II high-efficiency models. On anything we touch, we use OEM Toto fill valves, flush towers, wax seals, and supply lines. We offer quality aftermarket only where the owner asks and the part doesn’t affect the flush or seal. On a Toto, the bowl and china rarely fail, so a worn fill valve or wax ring is a repair every time. We only recommend replacement when the trapway or flange is cracked or the Washlet electronics are beyond economical repair.
See the difference
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AfterToto Service Pricing in La Verne
Most Toto work in La Verne falls into one of these three ranges:
| Service | Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
A simple wax ring and flange re-set on a Toto Drake costs far less than a full remodel, of course. What drives cost in La Verne is what we find once the toilet’s off: flange height, subfloor condition, and whether the shutoff valve needs replacement. A free estimate includes that inspection. Call (833) 382-8544 and we’ll walk through what your specific job involves.

Serving La Verne, CA — Our Local Coverage Area
We’re based in the La Verne area and also handle Toto repair in Claremont, so we 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 La Verne
Yes. We re-set Toto Drake and Ultramax models regularly during La Verne bathroom remodels, including flange-height corrections when new tile raises the finished floor. We use OEM wax rings and tank-to-bowl gaskets on every re-set. Call (833) 382-8544 to schedule a free estimate for your remodel.
Usually yes, if the failure is a clogged inlet screen or a cracked supply line. If the control board or seat sensor is dead, repair typically costs more than a new seat. We diagnose the exact failure and give you a repair-versus-replace number before doing any work. Call (833) 382-8544 to book a diagnostic visit.
La Verne’s hard water pits the internal seals on the fill valve over time, and our hot summers accelerate mineral crust formation in the tank. We install OEM Toto fill valves, which hold up better than generic aftermarket parts under these conditions. Call (833) 382-8544 for a replacement with OEM parts.
We do. Tub-to-shower conversions on north-side La Verne homes often mean moving or re-fitting the toilet flange, and Toto service in Montclair and nearby areas shows us skirted trapway models need the flange at the right height to seal correctly. We handle the entire job, including the Toto re-set, the shower install, and the finished tile. Call (833) 382-8544 for a project quote.
No. We’re an independent contractor and not authorized, sponsored, or endorsed by Toto. We use OEM Toto parts on every repair, but warranty claims go through Toto or an authorized dealer. What we offer is honest, experienced Toto service with no dealer script.
Service Areas Near La Verne
We also provide Toto service in the surrounding communities, including San Dimas, Claremont, Pomona, Glendora, and Upland. For work farther out, see Toto service in Santa Ana or Toto service in Rialto.
Book Your Toto Service in La Verne Today
If your Toto needs re-setting, rebuilding, or replacing in La Verne, call Gold Star Contractors at (833) 382-8544. We’ll give you a straight answer and a free estimate. Same-day service is available when the job allows.
Written by Noel Carranza, Owner at Gold Star Contractors, serving La Verne, Toto in Upland, and the Pomona Valley.