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Toto Construction in Fullerton, CA | Square One Builders
We provide independent Toto service across Fullerton, from toilet replacement and washlet installation to full bathroom remodels built around Toto fixtures. What makes our Toto work different here is that we know the older housing stock: the 1920s bungalows, the postwar ranch tracts, the apartments near Cal State Fullerton. We’re not manufacturer-affiliated or authorized, but we’ve installed and serviced enough Toto equipment in Fullerton to know exactly what these fixtures do well and where they fail. Call (877) 688-9930 for a free estimate. Brent Calloway and our crew have been working on Orange County homes for the better part of three decades, and we treat a toilet replacement with the same care as a full addition.

Why Fullerton Residents Choose Us for Toto Service
Fullerton homes are old enough to have real plumbing history. When a Toto Ultramax II starts running or a Washlet seat stops heating, the fix is rarely just the fixture itself. It’s the supply line behind it, the panel feeding it, the clay sewer lateral under the floor. We’ve seen all of it. Brent Calloway grew up in the Midway City pocket just off Bolsa Avenue and learned construction through the Golden West College program in Huntington Beach, then spent years doing ground-level work throughout Orange County. That background means we don’t guess at what’s behind your wall – we’ve opened enough of them in Fullerton to know what’s likely there. We keep Toto OEM parts for fill valves, flush valves, and electronic boards on hand, plus quality aftermarket options when a budget matters. One contractor, every system: if your Toto install reveals a bad flange, a corroded angle stop, or an undersized panel, we don’t call someone else. We fix it.
Styles & brands we work with







Common Toto Construction Problems We Solve in Fullerton
- Running or weak-flushing Toto Drake and Ultramax toilets. Fullerton water is hard – harder than most of coastal Orange County. Mineral buildup eats fill valves and flush valves faster here. We see weak flushes and constant running in Toto Drake II and Ultramax II models throughout the 92832 and 92835 ZIP codes where original toilets have never been serviced.
- Leaks at the toilet base. Older Fullerton homes on cast-iron or clay sewer laterals develop flange breaks and wax ring failures more often than newer construction. The ground shifts, the clay settles, and the wax ring gives out. We see this constantly in the pre-1960 bungalows around College Park and the Chapman corridor.
- Failed electronic bidet seats. Washlet S550e and C200 seats, plus Neorest AH and RH integrated units, have electronic boards that fail from power surges and simple age. Mid-century apartments near Cal State Fullerton are especially prone – old wiring, old panels, and electronics that just can’t take it anymore.
- Corroded supply lines and angle stops. Galvanized plumbing is everywhere in Fullerton’s older tract homes. When we pull a Toto toilet for replacement, the supply line connection is often rusted to the point of near-failure. Catching that before it becomes a flood is part of the job.
- Wrong toilet for the bathroom footprint. Fullerton bathrooms in 1940s and 1950s homes are small. A Toto Drake II with a standard rough-in doesn’t always fit. We spec the right model – compact elongated or round front – so you don’t end up with a toilet that doors swing into or knees hit.
Toto Service in Fullerton: What Local Conditions Mean for Your Equipment
Here’s something that matters in Fullerton but doesn’t come up the same way in neighboring cities like Anaheim or Brea: the city’s historic preservation review can dictate what you’re allowed to do on visible front elevations. On older downtown and College Park blocks, window style, roof pitch, and setbacks are all on the table. That sounds like an exterior concern, but it changes interior Toto work. If you’re adding a washlet to a second-floor bathroom on a 1920s home, the electrical run has to happen without disturbing exterior walls the city cares about. Venting a new Toto Neorest might force a bathroom layout rethink because the vent stack can’t just poke through an eave the preservation office has opinions on. We’ve reconfigured bathroom layouts in Fullerton’s historic core more than once because a vent stack or electrical chase would have altered a roofline the city won’t let you touch. That’s not true one city over. It’s true here, and it shapes how a competent Toto install gets done in a Fullerton prewar home. Start from square one, build it right.
Toto Models & Products We Service in Fullerton
We service the full Toto residential line: Toto sales & service covers everything from basic Drake two-piece units to the high-end Neorest. That includes the Toto Ultramax II (MS604114CEFG), the Toto Drake II (CST454CEFG), Washlet seats in the S550e and C200 lines, and Neorest AH and RH integrated toilets. On critical components – fill valves, flush valves, electronic boards – we use Toto OEM parts. Compatibility and longevity aren’t worth gambling on. For less critical items like supply hoses and seat hardware, we offer quality aftermarket options that keep costs down without compromising the fixture. What’s stocked locally for Fullerton turnaround: Drake and Ultramax fill valves, flush valve assemblies, flappers, wax rings, reinforced rings, supply lines, and angle stops. If we need a specialty part, our supplier network gets it to Fullerton fast – usually within a day or two.
See the difference
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AfterToto Service Pricing in Fullerton
Here’s what Toto work costs in Fullerton, from a fixture replacement up to a full remodel:
| Service | Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives the cost: the age and condition of what’s behind the fixture, the electrical work a washlet or Neorest needs, and whether historic review slows anything down. A free estimate gives you a written line-item breakdown before any commitment. Call (877) 688-9930 for exact numbers on your Fullerton bathroom.
Serving Fullerton, CA — Our Local Coverage Area
We’re based in the Fullerton 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 Fullerton
Usually, yes, but not always without panel work. A Washlet S550e draws around 1,200 to 1,400 watts when the seat heater and warm water are running. That’s a dedicated 15-amp circuit. If your Fullerton home still has a 60-amp or even an undersized 100-amp panel, the circuit may not exist, and adding one can exceed the panel’s capacity. We assess the panel first. If it needs an upgrade, we do the panel work as part of the same job. Call (877) 688-9930 and we’ll check your electrical before you buy a washlet.
Hard water in Fullerton builds mineral scale inside the fill valve, which stops it from closing fully. The tank keeps refilling, water dribbles into the bowl, and you hear it. We fix this by cleaning or replacing the fill valve – we use Toto OEM parts for that, because aftermarket fill valves on Drake models don’t always seat right. Most running-toilet fixes happen in one visit. Call (877) 688-9930 for a free estimate on the repair.
Yes, but we tell you straight: if the Neorest is over ten years old and the electronic board has failed, replacement often costs more than a new high-efficiency Toto toilet with a separate washlet seat. We’ll give you the replacement number and the repair number, and let you decide. No pressure. For newer Neorests, board replacement with OEM electronics is straightforward and we stock the common ones.
On older Fullerton homes, the usual cause is a failed wax ring from a shifting clay or cast-iron sewer lateral under the slab. We see it constantly in College Park and the downtown residential streets. Water pools at the base, the floor around the toilet darkens, and you might smell sewer gas. We pull the toilet, replace the ring with a reinforced wax or synthetic ring, and check the flange for cracks. If the flange is broken we replace it. Call (877) 688-9930 for an exact repair quote – estimates are free.
Yes. Fullerton’s 1940s and 1950s bathrooms are tight, and a standard elongated Toto won’t always clear the door swing or the vanity. We measure your rough-in – most Fullerton homes are 12 inches, but some older ones are 10 or 14 – and we spec a compact elongated or round-front Drake II that actually fits. We’ll also factor in your water pressure and the age of your supply lines so the install goes clean. Call (877) 688-9930 and we’ll bring measuring tape and straight answers.
Service Areas Near Fullerton
Besides Fullerton, we handle Toto service in Fullerton service area communities and the surrounding North Orange County and Inland Empire cities. That includes Toto service in Orange, Toto service in Costa Mesa, plus Corona, La Verne, Montclair, Claremont, and Norco. If you’re not sure whether we reach you, call us – the worst that happens is we point you to someone solid.
Book Your Toto Service in Fullerton Today
If your Toto toilet is running, leaking, or you’re planning a bathroom remodel around Toto fixtures in Fullerton, call (877) 688-9930. We’ll schedule a free estimate, show up when we say we will, and give you a written quote with real numbers. Your remodel, fully managed – from the sewer flange up.
Written by Brent Calloway, Owner & General Contractor at Square One Builders, serving Fullerton and Orange County since 2005.