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 Las Lomas, CA | San Mateo Construction
We provide independent Toto fixture service across Las Lomas, from full bathroom remodels to washlet repairs and toilet rebuilds on rural well-fed plumbing. What sets our Pajaro Toto service apart: we know Pajaro Valley well water. It’s hard, mineral-heavy, and hard on flush valves, rim jets, and electronic bidet seats in ways city water a few miles south simply isn’t. If you’re dealing with a weak-flushing Drake or a Washlet that keeps tripping, call (855) 901-7266 and we’ll diagnose it honestly.
We’re a licensed general contractor, not a Toto dealer or manufacturer affiliate. That means we recommend repairs or replacements based on what’s actually failing, not on what we’re incentivized to sell. Our crew has installed and serviced Toto fixtures in Las Lomas bathrooms for years, and we read the spec sheets, tolerances, and Monterey County permit drawings with the same attention.
Why Las Lomas Residents Choose Us for Toto Service
Most plumbing companies in the Pajaro Valley can swap a toilet. Fewer can trace a Washlet control-board failure back to a surge-prone well-pump circuit, replace a scaled fill valve on a 12-year-old Drake, and reset an off-level closet flange on a farmworker-era floor, all in one visit. That’s the kind of work Las Lomas homes actually need.
Noel Carrington, our owner at San Mateo Construction, grew up in San Mateo County and has spent nearly three decades in residential construction, from rough framing to finish plumbing and full bath remodels. He’s particular about tolerances, and he’s passed that on to everyone who works under our license. We stock genuine Toto OEM fill valves, flush towers, and washlet control boards for faster turnaround in Las Lomas, and we’re not shy about telling you when a repair makes more sense than a replacement.
One contractor, every system. We can install your Toto toilet, build the walk-in shower next to it, tile the floor, and handle the Monterey County permit paperwork, all under one contract. No patchwork of separate trades.
For broader context on how we serve the area, visit our Las Lomas service area page.
Styles & brands we work with







Common Toto Construction Problems We Solve in Las Lomas
- Washlet seat failures from power drops and well-pump surges. The C5 and C200 electronic bidet seats have control boards and heaters that don’t tolerate voltage spikes well. On rural Las Lomas electrical service, where well pumps kick on and off all day, these boards burn out faster than they would on stable municipal power. We diagnose the board, check the circuit, and often add surge protection at the outlet.
- Weak flush and running tanks on Drake and Ultramax II toilets. Hard, mineral-heavy well water eats fill valves and flush towers. The result is a toilet that runs intermittently or flushes weakly and needs a second flush. On a 15-year-old Drake, the fix is almost always a valve kit, not a new toilet.
- Scale-clogged rim jets and EcoPower aerators. Untreated well water deposits calcium and magnesium on Toto’s narrow rim jets and touchless faucet aerators. Over time, the flush pattern gets uneven and the faucet flow drops. Descaling helps temporarily; sometimes the right answer is a valve choice matched to the water chemistry.
- Wax ring and flange leaks on older farmworker-housing floors. Las Lomas homes built for agricultural workers often have settled subfloors. When the closet flange sits off-level, the wax ring compresses unevenly, and eventually it leaks at the base. We reset flanges, shim to level, and use proper ring types for the offset.
- Septic-safe flush volume mismatches. Toto’s low-flow toilets are good for septic systems, but only when the flush volume matches the home’s actual septic load and drain field condition. We check that, because a toilet that flushes too little for an aging system creates more problems than it solves.
Toto Service in Las Lomas: What Local Conditions Mean for Your Equipment
Las Lomas is a small, unincorporated Pajaro Valley community just north of Toto repair in Watsonville territory, and most of the housing stock traces back to agricultural use: modest ranch-style homes, older farmworker housing, and scattered structures on large lots. Nearly everything here runs on private wells and septic systems, and every construction job sits under Monterey County building review rather than city permitting. That changes how Toto fixtures behave.
Because the water is untreated and mineral-heavy, Toto washlets and low-flow toilets in Las Lomas live a harder life than the same models in Toto repair in Corralitos or Watsonville a few miles south, where municipal water chemistry is controlled. Descaling, valve selection, and water-treatment decisions matter more here. When we’re on a job off Las Lomas Drive, we’re not just installing a toilet; we’re accounting for the well’s mineral profile, the septic system’s load capacity, and whether the floor under the fixture is even close to level. It’s a rural, ag-adjacent reality, and it shapes every Toto service call we run in the 95076 ZIP.
A good example came from a rehab of an older ranch house off Las Lomas Drive. Our tech traced a Toto Washlet C5 that kept tripping to a failing control board on a surge-prone well-pump circuit. We replaced the board, swapped the Drake’s scaled fill valve, reset an off-level closet flange, added a surge protector at the outlet, and matched the flush volume to the home’s septic load. The bathroom has run clean through the wet season since.
Toto Models & Products We Service in Las Lomas
We work on the full Toto lineup you’re likely to find in Las Lomas homes: the Drake (CST744 and CST776 two-piece gravity toilets), the Ultramax II one-piece, Washlet C5 and C200 electronic bidet seats, and EcoPower and Connelly touchless faucets. The Drake is by far the most common, and most repairs are valve-level fixes rather than full replacements.
On parts, we use genuine Toto OEM fill valves, flush towers, and washlet control boards. The tolerances are tight, and aftermarket clones fail early in hard well water. We stock the common OEM parts for fast Las Lomas turnaround. If a bowl is cracked or a washlet board is dead past warranty, we’ll tell you honestly that replacement makes more sense than repair. For the broader picture of what we carry and service, see our Toto sales & service overview.
See the difference
Before
After
Before
After
Before
AfterToto Service Pricing in Las Lomas
Toto fixture work in Las Lomas spans a wide range because it depends on what the job involves: a simple fill-valve replacement costs far less than a full bathroom remodel built around a new Toto fixture. Here are the price ranges we work within for Toto-adjacent bathroom projects:
| Service | Typical Range |
|---|---|
| Full Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives cost: the condition of the existing floor and flange, whether water treatment or descaling is needed, and the scope of surrounding work. Every estimate is free and line-itemed, so you know exactly what you’re paying for. Call (855) 901-7266 to schedule yours.
Serving Las Lomas, CA — Our Local Coverage Area
We’re based in the Las Lomas 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 Las Lomas
No, and we’re clear about that. San Mateo Construction is an independent contractor with years of hands-on Toto installation and repair experience in Las Lomas. We’re not manufacturer-affiliated, which means our repair recommendations are driven by what’s actually failing on your fixture, not by dealer quotas or warranty incentives. We use genuine Toto OEM parts because they fit correctly and last longer in hard well water.
We use genuine Toto OEM fill valves, flush towers, and washlet control boards. In our experience, aftermarket clones fail early in Pajaro Valley well water because the tolerances are looser and the materials don’t hold up to the mineral load. OEM parts cost a little more upfront but save repeat service calls.
Most common repairs, like a fill valve or flush tower replacement on a Drake, take under two hours on site. Washlet control-board failures take a bit longer because we trace the circuit and check for surge issues before replacing the part. Full bathroom remodels with Toto fixtures run on a project schedule, not a service-call schedule. We’ll give you a clear timeline before any work starts.
The Toto Drake two-piece (CST744) is our usual recommendation for small Las Lomas bathrooms because its footprint fits tight clearances and the two-piece design is easier to maneuver through narrow doorways in older homes. The Ultramax II is a great one-piece option if you want a sleeker look and have the space. We’ll measure the rough-in and available clearance before recommending anything. Call (855) 901-7266 for a free estimate and exact fit guidance.
Simple valve-level repairs on a Drake typically fall in the lower hundreds. Larger bathroom projects involving Toto fixtures range from $5,000 for a small remodel up to $28,000 for a full bathroom rebuild. Every job gets a free, line-itemed estimate so you know the exact scope and cost before we start. Call (855) 901-7266 to schedule yours.
Service Areas Near Las Lomas
We serve Las Lomas and the surrounding Pajaro Valley, including Watsonville, Aromas, Elkhorn, and Pajaro. If your property sits in the unincorporated areas under Monterey County review, we’re already familiar with the permitting path. For nearby Toto service, see Toto service in Aromas and Toto service in Elkhorn.
Book Your Toto Service in Las Lomas Today
Tell me what you actually need, and we’ll figure out the right way to build it. From a single Drake valve kit to a full bathroom remodel, we’ll show up, diagnose honestly, and quote fairly. Call (855) 901-7266 to schedule your free estimate in Las Lomas.
Written by Noel Carrington, Owner at San Mateo Construction, serving Las Lomas, Amesti Toto service area, and the broader Pajaro Valley.