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Toto Construction in Upland, CA | Daly City Construction
We provide independent Toto repair, installation, and bathroom construction across Upland and nearby communities, including Rancho Cucamonga Toto service, covering every ZIP from 91784 up in the foothills down through the 91786 flats. The one thing that separates our Toto work here is that we know the slab under your house. Upland’s expansive adobe clay shifts during Santa Ana dry-outs, and that movement is behind a surprising number of toilet leaks that get blamed on the fixture. Call (866) 505-5254 for a free estimate from a contractor who sees the whole picture, not just the porcelain.

Why Upland Residents Choose Us for Toto Service
We’ve worked on Toto Drakes, Ultramax IIs, and Washlet seats in enough of Upland’s 1950s and 1960s ranch homes to know where these systems fail here specifically. The original cast-iron and galvanized plumbing in those older tracts interacts with Toto’s engineering in ways you don’t see in newer construction. When we come out for a quote, we check the floor flange, the slab condition, and the water pressure before we ever hand you a price. Noel Cabrera, our owner, grew up around postwar tract homes and spent years on residential jobs across San Mateo and San Francisco counties before building Daly City Construction. He’s the kind of contractor who wants to see the flange, not just the toilet. That’s why our Toto sales & service work starts with a proper diagnosis. We use genuine Toto OEM parts because the hard, mineral-heavy inland water in Upland eats through cheap aftermarket fill valves and flappers within a season. You shouldn’t have to pay for the same repair twice.
Styles & brands we work with







Common Toto Construction Problems We Solve in Upland
Here’s what we actually find in Upland homes, week after week:
- Base leaks on slab-on-grade homes. The adobe clay under the 91786 flats expands in winter and shrinks hard during fall Santa Ana wind events. That slab movement cracks closet flanges and crushes wax rings, especially under rigid one-piece units like the Ultramax II. The toilet hasn’t failed. The floor moved.
- Phantom running in Toto Drakes. Upland’s inland water carries more minerals than coastal supply. Toto’s G-Max flush tower and fill valve seals collect that scale, the valve doesn’t seat fully, and the toilet runs intermittently. You hear it at night. Your water bill confirms it.
- Washlet seat electronics seizing up. The heated seat, warm-water wand, and pump motors in S550e and C5 units pull in mineral-laden water and, after a few hot, dry Upland summers, the scale wins. Seats start throwing error codes or the pump stops circulating.
- Hairline tank cracks on older EcoPower units. The swing between dry summer heat and cold winter mornings stresses the glaze on older Toto tanks. We see fine cracks that weep slowly, and homeowners often miss them until water stains show up on the ceiling below or the floor.
- Wax rings failing right after a remodel. When we open up a Upland bathroom and the slab has shifted even a quarter inch, the original wax ring is done. A new one without addressing the flange height means another leak in six months. We don’t skip that step.
Toto Service in Upland: What Local Conditions Mean for Your Equipment
Here’s the part that matters most if you own a Toto fixture in Upland, and it’s something you’ll only hear from someone who works on homes here. Most of the ranch tracts in the 91786 flats sit on original slab-on-grade foundations poured directly over expansive adobe clay. When the Santa Ana winds blow hot and dry for a week in October, that clay desiccates and shrinks. The slab doesn’t just settle. It shifts unevenly, sometimes by fractions of an inch that you’d never see with your eyes. A rigid Toto one-piece toilet like the Ultramax II can’t flex with that movement. The wax ring compresses, breaks its seal, and you get water seeping out at the base. It looks like the toilet failed. It didn’t. The ground underneath your house did. We see this pattern every fall in the neighborhoods around Foothill Boulevard and the 91786 flats. That’s why we always want to look at the flange and slab before we quote you a replacement. You may not need a new toilet. You may need a new flange, a better seal, and an honest answer about whether the slab should be re-leveled. That’s the difference between a parts-swapper and a contractor who understands Upland’s geology.
Toto Models & Products We Service in Upland
We cover the full Toto lineup you’re likely to find in Upland homes. That includes the Drake CST744 two-piece series, the Ultramax II one-piece, the Washlet S550e and C5 bidet seats, and older EcoPower and EcoPromenade units still running in original bathrooms from the 1960s and 1970s. For repairs, we use genuine Toto OEM fill valves, flappers, wax rings, and Washlet pumps. Not aftermarket. Not “will fit.” Aftermarket Toto-compatible parts routinely fail within a year in Upland’s water, and we’re not going to install something we know won’t last. For older EcoPower units with cracked tanks or dead Washlet boards, we’ll give you a straight repair-vs-replace number. If the cost of a new tank and board approaches the price of a new Drake, we’ll tell you that. We’re not in the business of selling you a repair that doesn’t make sense. Most common Toto parts are stocked locally or arrive within a day or two, which keeps Upland service calls moving fast.
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AfterToto Service Pricing in Upland
Toto repair and installation pricing depends on what’s actually going on under the fixture. A base leak might be a $15 wax ring or a cracked flange that needs a hour of slab repair. A Walk-In Shower Installation, Tub-to-Shower Conversion, or full Bathroom Remodel is a different scope entirely. Here’s what our Upland bathroom construction work runs:
| Service | Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
Every quote starts with a free in-home estimate. We’ll inspect the fixture, the flange, and the slab, then give you a written line-item number. No vague ballparks, no add-ons after you’ve signed. Call (866) 505-5254 to schedule yours.
Serving Upland, CA — Our Local Coverage Area
We’re based in the Upland area and know this community well, and we also offer Toto service in Claremont. Use the map below to see our full service coverage — if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Upland
The floor is usually the culprit. In Upland’s slab-on-grade ranch homes, the expansive adobe clay under the foundation shrinks during prolonged Santa Ana dry-outs, and the slab shifts slightly. A rigid Toto one-piece like the Ultramax II can’t flex, so the wax ring breaks and water seeps out at the base. We’d pull the toilet, inspect the flange, and tell you whether it’s a $15 seal or a cracked flange that needs repair. Call (866) 505-5254 for a free inspection.
Yes, we can install a Washlet on most existing Toto toilets. Upland’s mineral-heavy water will shorten the life of the internal pump and wand, because scale builds up in the unit’s water path. We use genuine Toto OEM parts and can add a water filtration setup for the Washlet if your water hardness warrants it. Call (866) 505-5254 to talk through what makes sense for your home.
In Upland’s inland water, mineral scale films the G-Max fill valve and flush tower seals, so the valve doesn’t seat completely and the toilet runs intermittently. We replace the worn components with genuine Toto OEM parts and adjust the system. Aftermarket flappers won’t hold up here. Call (866) 505-5254 and we’ll get it done.
Not always. The answer depends on your existing bathroom footprint, the location of the flange, and whether the slab has moved. In many Upland ranch homes, we can convert the tub to a walk-in shower and keep the toilet and vanity exactly where they are. We’ll map the plumbing during the free estimate and show you exactly what has to change. Call (866) 505-5254 to schedule yours.
Replace it. A hairline crack in the tank glaze usually means the porcelain has already begun to separate, and once it leaks through, the only fix is a new tank. On an EcoPower unit that’s already 15 or 20 years old, the cost of a replacement tank plus better water efficiency on a new Drake usually makes replacement the smarter call. We’ll give you both numbers before you decide. Call (866) 505-5254 for a straight answer.
Service Areas Near Upland
Our team serves the full Upland service area including ZIP codes 91784, 91785, and 91786. For Toto service in surrounding communities, see our Toto service in Fullerton and Toto service in Stanton pages. We also cover the broader Inland Empire and eastern San Gabriel Valley. If your ZIP borders Upland, call and ask – we’ll let you know if we can get to you this week.
Book Your Toto Service in Upland Today
Last fall a homeowner in the 91786 flats called about water pooling around a Toto Ultramax II after a stretch of Santa Ana winds, and we’ve handled similar calls for Toto repair in Montclair. Our tech pulled the toilet, found the wax ring crushed and the closet flange cracked where the slab had shifted, and reset a new flange and seal. We also swapped the worn G-Max fill valve for a genuine Toto OEM part and the leak was gone without replacing the toilet. That’s how we work. Tell us what the house needs, not what you think it needs, and we’ll figure out the right fix. Call (866) 505-5254 to schedule your free estimate today.
Written by Noel Cabrera, Owner at Daly City Construction, serving Upland, San Antonio Heights Toto service, and surrounding communities.