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 Pomona, CA
We provide independent Toto service across Pomona, from simple fill-valve replacements in 1960s tract homes off the 10 to full bath remodels with WASHLET+ builds near Lincoln Park, and we also handle Toto service in Claremont. We are not authorized, sponsored, or partnered with Toto. What makes our Toto work here different is that we see how Pomona’s hard inland water and pre-1950 housing stock actually break these fixtures, so we fix the cause, not just the symptom. Call (877) 373-9230 for a free estimate.

Why Pomona Residents Choose Us for Toto Service
Toto fixtures show up in Pomona bathrooms across every era of housing here, from original 1980s Toto suites in stucco tract homes in 91766 to current Drake II and Ultramax II installations in remodeled Craftsman bungalows near the Arts Colony. We work on Toto sales & service issues weekly and know which model lines are worth repairing and which have hit the end of their useful life. Noel Cardenas, our owner, learned construction through the vocational trades program at Santiago Canyon College and has spent years working every phase of residential builds across Southern California. When a Pomona homeowner calls about a Toto fixture, we send someone who understands the plumbing, the floor framing beneath it, and the house it’s installed in. We stock OEM Toto parts for faster turnaround across Pomona service area zip codes 91766, 91767, 91769, and 91797. Estimates are free and line-itemed, so you know exactly what a repair costs before we touch a wrench.
Styles & brands we work with
- Kitchen remodeling
- Bathroom remodeling
- Home additions & ADU
- Roofing
- Windows & doors
- Driveway & pavers
- Fence
Common Toto Construction Problems We Solve in Pomona
Here are the Toto failures we see most often in Pomona homes, tied to the conditions that actually cause them here:
- Phantom running on Ultramax and Drake toilets. Pomona’s hard inland water leaves scale on fill valves and flapper seals. The valve sticks open, the toilet runs for ten seconds every few minutes, and your water bill ticks up month after month. A new OEM fill valve and flapper usually fixes it for good.
- Washlet bidet seats that stop spraying or heating. In 95 – 105°F summer heat, minerals cake the nozzle and the inlet solenoid burns out trying to push water through. Many are misdiagnosed as a dead unit when only the solenoid or wand assembly is actually bad.
- Tank-to-bowl gasket leaks that rot the subfloor. Slow leaks behind older tub-to-shower conversions in 1950s-era bungalows sit against aging wood framing. By the time you see water stains on the ceiling below, the damage is already structural.
- Cracked china around the closet flange. Pomona’s pre-1950 homes often sit on original 1920s concrete stem walls with no rebar and unbolted cripple walls. Floors flex. Toilets rock. The porcelain at the mounting footprint eventually cracks.
- Supply-line leaks at the shutoff valve. Decades-old angle stops in Pomona’s older homes don’t always close fully once disturbed. We replace the line and the stop together so the repair doesn’t become a second repair two weeks later.
Toto Service in Pomona: What Local Conditions Mean for Your Project
Pomona’s construction market is split between the historic Craftsman and Spanish Colonial bungalows in the Lincoln Park and Wilton Heights neighborhoods, many with original knob-and-tube wiring and unpermitted additions, and the massive postwar tract-home swaths off the 10 and 60 freeways. That split matters for Toto work specifically because of what’s under the toilet. In Lincoln Park, it’s common to find foundation stem walls of original 1920s concrete with no rebar and cripple walls that have never been bolted. Pulling a Toto toilet and opening the floor to fix a cracked flange or a rotted subfloor can trigger a mandatory seismic retrofit under current California code. The homeowner called about a toilet. They find out the wall needs bolting to the foundation before we tile. Out-of-town contractors get surprised by that scope jump. We don’t. We flag it before we open the floor, so the retrofit cost is on the table from the start, not buried in a change order halfway through the job.
Toto Models & Products We Service in Pomona
We work on the Toto lines most common in Pomona baths: the Ultramax II one-piece high-efficiency toilet, the Drake and Drake II two-piece (CST743 and CST454 series), the Soirée and Carlyle one-piece suites often found in higher-end remodels near the Pomona Arts Colony, and the full Washlet / WASHLET+ line including S350e and C5 electronic bidet seats. Our parts approach is simple: Toto’s proprietary geometry means generic aftermarket fill valves and flush valves often fit poorly and fail within a year. We use OEM Toto parts on every repair, including Washlet solenoids and wand assemblies. For an older Drake or Ultramax, a $40 – $80 OEM fill valve kit and gasket set is a real repair, not a stopgap. When a Washlet board or integrated pump fails and the unit is out of warranty, we quote the OEM module and a full replacement side by side. We don’t up-sell a new toilet when a valve kit fixes it.
See the difference
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AfterToto Service Pricing in Pomona
The cost of Toto service in Pomona depends on scope. A fill-valve and flapper replacement runs toward the low end. A full bath remodel with a new Toto fixture, walk-in shower, and new flooring claims the high end. Here are the ranges we quote most often:
| Service | Pomona 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 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
Your free estimate includes a written line-item quote, so if we find an unbolted cripple wall or a floor flex issue beneath the toilet, you’ll see the seismic retrofit or framing scope listed separately before you sign. We also provide Los Serranos Toto service with the same transparent quoting. Call (877) 373-9230 to schedule yours.

Serving Pomona, CA - Our Local Coverage Area
We serve Pomona and nearby communities. Also see Toto in La Verne. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Pomona
The fill valve is the likely culprit. Pomona’s hard water leaves mineral scale on the valve’s internal seal, so it never fully closes and the toilet cycles constantly. We replace the OEM fill valve and flapper together, which usually solves the running for years, not weeks. Call (877) 373-9230 and we’ll confirm the diagnosis on-site.
Most Washlet failures are repairable. Mineral-caked nozzles, a burned inlet solenoid, and a failed wand motor are common in Pomona’s hard water, and the OEM replacement part often costs far less than a new seat. We only recommend replacement when the main board fails or the unit is out of warranty and the module cost approaches 60% of a new Washlet. We price both and you decide.
Rocking usually means floor flex beneath the toilet, not a loose bolt. In pre-1950 Pomona bungalows with unbolted cripple walls and original stem walls, the subfloor moves, the wax ring loses its seal, and the porcelain cracks. We replace the flange, sister the framing if needed, and flag the seismic retrofit scope before you tile over the problem.
It depends on the layout and the conditions we find when the old tub comes out. In our tub-to-shower conversions and walk-in shower installations, we assess the toilet’s supply line, flange, and gasket while the subfloor is exposed. If it’s an older Toto with a worn gasket, fixing it then costs less than doing it separately later. Call (877) 373-9230 for a free in-home estimate.
We use OEM Toto fill valves, flush valves, and Washlet solenoids and wands. It matters here because generic aftermarket parts often have slightly different geometry that fails faster under Pomona’s hard water. For the extra cost, you get the part actually engineered for the fixture. We don’t install a $12 flapper on a Toto and call it a repair.
Service Areas Near Pomona
We serve Pomona and reach nearby cities including Corona and Coto De Caza. If you’re in South Orange County, see our Toto service in Ladera Ranch page. For Riverside County homeowners, we cover Toto service in El Cerrito Corona as well.
Book Your Toto Service in Pomona Today
Whether it’s a running Ultramax II off the 10, a full tub-to-shower conversion near Lincoln Park, or Toto repair in Montclair, we’ll quote it straight and fix it right. Call (877) 373-9230 to schedule your free estimate in Pomona.
Written by Noel Cardenas, Owner at Garden Grove Contractors, serving Pomona and surrounding Southern California cities. The material you pick today is the problem you solve, or the one you live with, ten years from now.