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 Fountain Valley, CA | Moreno Valley Builders
We provide independent Toto service and installation across Fountain Valley’s 92708 and 92728 ZIP codes, from full bathroom remodels built around Toto fixtures to General Contractor in Fountain Valley services like targeted repairs on aging Drakes and Ultramax IIs. What makes our Toto work different here is simple: we know exactly how Fountain Valley’s hard water and 1960s-era plumbing interact with these toilets, because we’ve torn out and rebuilt enough of them in Mile Square tract homes to see every failure mode in person. Moreno Valley Builders is an independent Toto service provider, not manufacturer-affiliated or authorized, but we’re the crew homeowners call when a Toto has been leaking through a failed wax seal into a 55-year-old subfloor. Call us at (877) 752-3154 for a free estimate.
Why Fountain Valley Residents Choose Us for Toto Service
Most plumbers can swap a toilet. Fewer can tell you, before pulling it, whether the tank-to-bowl gasket on your original Toto Drake is the source of that slow, persistent drip at the base, or whether the flange underneath has rusted out and the floor joists are quietly turning to sponge. Our crew has worked on Toto fixtures in Fountain Valley long enough to spot the difference in the first ten minutes of a service call.
We use OEM Toto parts for critical components like fill valves, flappers, wax seals, and tank-to-bowl gaskets. Aftermarket parts can work in some situations, but a Toto fill valve tolerances are tight, and a generic substitute often means a toilet that runs every third flush or hisses at odd hours. When we replace a wax seal, we inspect the flange and subfloor while the toilet is off. That’s not an upsell. In Fountain Valley’s original tract homes, the flange is often the real problem.
Noel Trevino, our owner and general contractor, grew up in the Sunnymead Ranch area of Moreno Valley and has spent nearly three decades building and renovating homes across Southern California, including Huntington Beach Toto service work. He picked up the fundamentals at Riverside City College, where hands-on coursework in framing and mechanical systems gave him a foundation he still leans on when diagnosing a bathroom that’s been slowly failing for years. His youngest son now joins the crew on weekends, which Noel says is either proof the trade still means something or proof the kid just likes running a nail gun. If the details aren’t right on paper, they won’t be right in the wall.
Styles & brands we work with







Common Toto Construction Problems We Solve in Fountain Valley
We see the same handful of issues across Fountain Valley’s 1960s and 1970s bathrooms, and each one has a local angle that changes how we fix it.
- Running toilets from degraded fill valves and flappers: Fountain Valley’s water supply is hard enough to leave mineral deposits on valves and gaskets, and when combined with 20 to 30 years of service, it’s a recipe for a toilet that never stops hissing. We replace with OEM Toto parts and set the valve to the correct water level for your model, because a generic part usually means the problem returns within a year.
- Wax seal failure at the flange: The original tract homes here were built on slab foundations, and over decades the minor slab shifts and original cast-iron or copper flanges corrode just enough to let the seal fail. By the time you notice water staining around the base, the subfloor or flooring below has often started to soften. We address the flange first, then set the new seal.
- Washlet electronic failures from moisture and power surges: Tight 1960s-era bathrooms often lack the ventilation a modern Toto Washlet needs, and when warm shower steam meets electronic control boards, corrosion follows. Add in an occasional Santa Ana wind season power fluctuation in an older electrical panel, and you’ll get a Washlet that powers on but won’t heat or won’t respond to the remote. We diagnose these carefully rather than just replacing boards.
- Tank-to-bowl gasket deterioration in original Drakes: The original Toto Drake was a workhorse, but after 15+ years the gasket between the tank and bowl hardens and shrinks, causing slow leaks that run down the back of the toilet and destabilize the tank. It’s a simple fix with the right OEM gasket, but it gets missed constantly because the leak is often hidden behind the bowl.
- Original 1960s supply lines and shutoff valves failing during replacement: In Fountain Valley’s older tracts, the moment we touch a toilet shutoff valve, it’s a coin flip whether it closes cleanly or crumbles. We come prepared to replace the shutoff and supply line as part of any Toto toilet swap, because stopping work to run to a supply house costs you a half-day.
Toto Service in Fountain Valley: What Local Conditions Mean for Your Equipment
Here’s the thing that makes Fountain Valley different from a city ten minutes away. The Mile Square tract is fully built out. Every home dates to the 1960s or early 1970s, which means the copper supply lines and cast-iron drain runs under a Toto toilet are at exactly the same age as the toilet itself, and often in worse shape. When we pull a failing Toto Drake in a 1968 ranch near Mile Square Park, we regularly find original copper supply lines so thin-walled and corroded from decades of Fountain Valley water that they can’t be reused, and the cast-iron closet flange beneath the wax seal has rusted down to a jagged edge. That means a job that looks like a simple toilet replacement frequently turns into re-piping the supply line, replacing the flange, and repairing the subfloor before the new Toto ever gets set. Homeowners in neighboring cities with newer construction almost never face this combination. It’s the single biggest reason Toto repair costs vary in Fountain Valley, and why our free estimates include a look at the line and flange before we quote a number.
Toto Models & Products We Service in Fountain Valley
We work on the full range of Toto residential fixtures, with hands-on experience across the original Toto Drake, the Drake II, the Toto EcoUltramax, the Toto Ultramax II, and the Washlet line in its various configurations. For critical replacement parts, we stock OEM Toto fill valves, flappers, tank-to-bowl gaskets, and wax seals on our service vehicles so a Fountain Valley call doesn’t get delayed by a trip to a parts counter in another city. When OEM availability is limited, we source quality aftermarket parts only when the original specification has been discontinued, and we’ll tell you upfront which is which. If a Toto has multiple simultaneous failures, and the repair cost approaches half the price of a new high-efficiency model, we’ll say so plainly. We’d rather install a new Ultramax II with a clean flange and fresh supply line than band-aid a toilet that’s already given the home 20 years.
See the difference
Before
After
Before
After
Before
AfterToto Service Pricing in Fountain Valley
What you’ll pay depends on the scope, and we quote every job with a written line-item estimate before any work begins. Here are the ranges we typically see for Toto-related work in Fountain Valley:
| Service | Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Vanity Installation | $800 – $3,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
The cost of a Toto toilet replacement during a remodel varies based on the model you choose, the condition of the flange and supply line, and whether any subfloor repair is required. A free estimate from us includes checking all of that before we give you a number. Call (877) 752-3154 and we’ll schedule a time to take a look.
Serving Fountain Valley, CA — Our Local Coverage Area
We’re based in the Fountain Valley area and know this community well, with Toto repair in Westminster also in our service area. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Fountain Valley
If a new flapper didn’t stop it, the problem is usually the fill valve. In Fountain Valley’s hard water, mineral deposits inside the Toto fill valve prevent it from sealing fully, so water keeps trickling into the overflow tube even when the tank is full. We replace the fill valve with an OEM Toto unit and adjust the float to the correct height for your Drake model. If it’s still running after that, there may be a hairline crack in the overflow tube itself, which we’ll catch during the service call. Call (877) 752-3154 for an exact diagnosis.
Yes, in most cases. The Washlet seat and control assembly can be removed and reinstalled on a new Toto bowl, provided the bowl is a compatible model and the electrical outlet is being relocated or upgraded as part of the remodel. Fountain Valley’s older bathrooms often need a dedicated GFCI outlet added for the Washlet, which we include in the remodel scope. If your Washlet has already been damaged by moisture or power surges, this is the right time to replace it rather than reinstall a failing unit.
You’ll notice one or more of these signs: a persistent sewage odor around the base, water staining or discoloration on the flooring where the bowl meets the floor, a toilet that rocks slightly when you sit on it, or moisture wicking up the baseboard near the toilet. On a slab foundation like most Fountain Valley tract homes, water from a failed seal can travel under vinyl or tile for months before it becomes visible. If you see any of these signs, call (877) 752-3154, and we’ll pull the toilet, inspect the flange and subfloor, and give you an honest assessment of the damage.
Yes, and this is one of the reasons Toto handles this city well. Most Toto models, including the Drake II and Ultramax II, use a dual-flush or tower-flush mechanism that flushes effectively at 1.28 gallons per flush, even with lower supply pressure. Older original Drakes from the 2000s can be more finicky about pressure, especially if the supply line is partially blocked by mineral buildup. We check supply pressure and line condition during installation, because a clean line matters as much as the flush mechanism itself.
A straightforward Toto toilet replacement, where the flange and supply line are in good shape, typically runs in the lower portion of our bathroom remodel range, which starts around $9,000 for a full remodel. If we’re only swapping the toilet itself, without other remodel work, the cost is far less. The variables in Fountain Valley are the age of the flange, the condition of the supply line, and whether the subfloor around the toilet needs repair. Call (877) 752-3154 and we’ll provide a free, line-item estimate based on your specific bathroom.
Service Areas Near Fountain Valley
Beyond Fountain Valley, our Toto service area reaches Toto service in Costa Mesa to the east and Toto service in Stanton to the north. We also work in the surrounding Orange County communities, and our Fountain Valley service area coverage extends to both 92708 and 92728. For a broader look at our Toto expertise, see our Toto sales & service page.
Book Your Toto Service in Fountain Valley Today
In a 1968 Mile Square ranch home, we removed an original Toto Drake that had been leaking from a failed wax seal, leaving soft spots in the plywood subfloor. After sistering the joists and setting a new flange, we installed a Toto Ultramax II with a new OEM wax seal and replaced the shutoff valve. The homeowner avoided a full floor replacement. That’s the kind of outcome we aim for on every Fountain Valley Toto job and our Toto service in Midway City. Call (877) 752-3154 to schedule your free estimate.
Written by Noel Trevino, Owner at Moreno Valley Builders, serving Fountain Valley and the surrounding Orange County communities.