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Toto Construction in Brea, CA | Square One Builders
We provide independent Toto service across Brea, from the 92821 tracts around downtown to the canyon-edge homes in 92823. What makes our Toto work different here is simple: we know Brea’s water, Brea’s soil, and Brea’s oil-field history well enough to know which Toto failures happen where, and why. If your Drake is phantom-running or your Washlet board died, call (877) 688-9930 and we’ll diagnose it straight.

Why Brea Residents Choose Us for Toto Service
We’ve rebuilt and serviced TOTO toilets and washlet systems across Brea on enough bathrooms to know the difference between a $400 flapper-and-seal refresh and a board replacement that costs several times that. Brent Calloway, our owner, grew up in the Midway City pocket off Bolsa and spent three decades learning the ground-level reality of Orange County homes. That means when we open a Brea bathroom wall, we’re not surprised by what’s behind it. We use genuine TOTO OEM fill valves, flappers, gaskets, and washlet boards wherever the model calls for them, and we stock the common parts so a routine Drake or Ultramax repair doesn’t sit waiting on a freight truck. We’re a full-scope general contractor, not a plumbing-only shop, so when a Toto repair turns into a bigger bathroom decision, the same crew can handle the shower, the vanity, and the tile.
Styles & brands we work with







Common Toto Construction Problems We Solve in Brea
- Washlet control boards and seat sensors failing early. Brea’s inland heat, dry air, and Santa Ana wind dust intrusion punish electronics. Canyon-edge homes in 92823 get wind-driven dust into bathroom fans and vents, and that dust settles on Washlet boards. We replace boards with OEM TOTO parts and advise on placement changes that keep the next board alive longer.
- Hard-mineral scale and fill-valve wear in Drake and Ultramax tanks. Brea’s water leaves deposits that cause phantom running, weak flush, and flapper degradation. We see this constantly in the 1950s-70s ranch tracts around downtown and Randolph Hills. A $600 flapper-and-seal refresh on a Drake is often all it needs; a scaled-up fill valve gets replaced, not scraped.
- One-piece Ultramax II and Aquia gasket and closet-bolt seal leaks. The flat 92821 core sits on slab foundations with older supply lines that shift over decades. That movement stresses the seal between bowl and flange. We reset closet flanges, replace the gasket, and re-bolt so the leak doesn’t return in six months.
- UV and heat degradation of washlet plastic housings and supply hoses. Bathrooms facing the Puente Hills get long afternoon sun exposure. Plastic housings turn brittle, hoses crack, and the seat starts looking tired years before the mechanicals fail. We replace supply hoses and housings during any larger bathroom remodel so the finish matches the function.
- Toto toilet relocations on older slab lots. Moving a drain across a 1950s slab in Brea means concrete cutting and a new flange at minimum. We see homeowners surprised by what that involves. Our team handles the full scope: demolition, slab work, drain relocation, flange, and finish.
Toto Service in Brea: What Local Conditions Mean for Your Equipment
La Floresta and Blackstone sit on remediated oil fields. That single fact changes how Toto work plays out there compared to any other part of Brea, and it’s something a contractor from Fullerton or La Habra may never have hit. A bathroom remodel that relocates a TOTO toilet or washlet on former oil land can trip methane-mitigation and oil-well-abandonment review, which means deeper utility setbacks and more engineering review than a normal infill job in the older 92821 core ever sees. In La Floresta we opened a master bath to refit a TOTO Ultramax II and found the supply stub set unusually deep behind the wall, a leftover of the field’s utility setbacks, while the washlet board had died from dust and heat. We reset the closet flange, swapped in an OEM fill valve and gasket, and installed a replacement Washlet board, leaving the homeowner with a clean flush and a working bidet seat. The same week, a Randolph Hills ranch home in 92821 needed only a $600 flapper-and-seal refresh on a Drake that had been phantom-running for months. Two Brea bathrooms, two completely different jobs, one city.
Toto Models & Products We Service in Brea
We work on the TOTO lines Brea homeowners actually have: the Drake two-piece and Drake II, the Ultramax II one-piece, the Aquia dual-flush, and the Washlet and Washlet+ electronic bidet seats in both S and C series. For parts, we use genuine TOTO OEM fill valves, flappers, gaskets, and washlet boards wherever the model calls for them. We turn to quality aftermarket only for discontinued or cosmetic pieces, and we tell you when that’s the case. Our goal is Brea turnaround, so we keep common Drake and Ultramax components on hand and order the rest same-week. If a washlet board or one-piece bowl is beyond economical repair, we say so plainly instead of patching it twice. We’re an independent Toto service provider, not manufacturer-affiliated or authorized, and our experience comes from local installs, not a training card.
See the difference
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AfterToto Service Pricing in Brea
What you’ll pay for Toto-related work in Brea depends on scope. A running Drake may cost a few hundred dollars; a full bathroom remodel with a relocated Toto starts in the low five figures. Here’s what we typically see:
| Service | Typical Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
Every free estimate includes a written line-item quote, so you see exactly what’s Toto parts, what’s labor, and what’s slab or drywall work. No change orders invented mid-project. Call (877) 688-9930 to schedule yours.
Serving Brea, CA — Our Local Coverage Area
We’re based in the Brea 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 Brea
Most Washlet failures in Brea are board or sensor issues caused by heat, dust, and mineral exposure, and they can be repaired with OEM parts. If the board is fried and the seat is ten years old with a brittle housing, replacement becomes the smarter spend. Call (877) 688-9930 and we’ll tell you which one you’re looking at.
In Brea, a Drake that keeps running almost always has a scaled or worn fill valve or a flapper that no longer seals. Our hard water leaves deposits that cause phantom running and weak flush. We replace the fill valve or flapper with OEM TOTO parts, and the running stops. Call (877) 688-9930 for a free estimate on the fix.
Yes, in a specific way: those neighborhoods sit on remediated oil fields, and relocating a toilet or washlet there can trigger methane-mitigation and oil-well-abandonment review, with deeper utility setbacks than a normal infill job. We’ve handled this. Call (877) 688-9930 and we’ll scope what your specific lot requires.
Sun-exposed bathrooms facing the Puente Hills put UV and heat stress on washlet plastic housings and supply hoses, and Santa Ana dust intrusion accelerates board failures. Yes, the 92823 microclimate shortens washlet life. We address this by using OEM boards and advising on placement or ventilation changes during your remodel.
No. Square One Builders is an independent general contractor, not authorized, sponsored, or endorsed by TOTO. What we have is field experience across Brea, OEM parts sourcing, and the full-scope remodeling capability to handle whatever the bathroom needs beyond the toilet. That independence means honest repair-versus-replace advice.
Service Areas Near Brea
We serve Brea and the surrounding communities, including Corona, La Verne, Montclair, Claremont, and Norco. For Toto work in the hills south of Brea, see Toto service in San Joaquin Hills. For Toto service in northern Orange County, see Toto service in Yorba Linda. Our broader Brea service area covers the full 92821, 92822, and 92823 ZIP codes. If you’re comparing Toto options across the brand, visit our Toto sales & service page.
Book Your Toto Service in Brea Today
Start from square one, build it right. Call Square One Builders at (877) 688-9930 for a free estimate on Toto service, bathroom remodeling, or any full-scope project in Brea. Brent and the crew will give you a straight answer.
Written by Brent Calloway, Owner at Square One Builders, serving Brea since 1994.