Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterToto Construction in Irvine, CA | Rowan Construction Group
We’re Rowan Construction Group, and we handle Toto plumbing fixture work across Irvine’s master-planned villages: tub-to-shower conversions, walk-in shower builds, bathroom remodels, and the roofing above the bathrooms that protects them. We also offer Driveway & Pavers - Irvine for homeowners looking to upgrade their exterior hardscaping alongside interior renovations. One thing makes our Toto work here different from anyone else’s: we plan around Irvine’s dual-approval system before the first fixture gets ordered. That means your Toto tub-to-shower conversion clears the City of Irvine permit and your village HOA architectural review, not one or the other. Call (470) 298-9650 for a written estimate.
We’re an independent Toto service provider. No manufacturer tie. We stock OEM Toto parts for the Neorest and Washlet+ lines because electronics don’t forgive shortcuts, and we keep quality aftermarket kits for the Drake II and Ultramax II models where they make honest sense. That independence means we pick the right part for the job, not the part a corporate program tells us to push.
Why Irvine Residents Choose Us for Toto Service
Grant Rowan founded this company in 2007. He trained at Los Angeles Trade-Technical College, where the coursework covered framing, concrete, and project estimating before he ever took a paying job. What that means for your Toto work is simple: we write down the scope, the price, and the parts list before anyone picks up a tool. Under Clause 1 of the Haven Standard, the written price comes first. Always.
Irvine homeowners call us for Toto work because we know what lives inside these walls. Portola Springs townhomes, Woodbridge tract houses from the 1980s, Great Park Neighborhoods condos built on the old El Toro base: each one throws different surprises at a plumbing job, and we’ve seen most of them. Our techs are background-checked and uniformed. A live person answers the phone 24/7. And every visit ends with a documented photo record of what we found and what we did, so you have evidence, not a verbal summary.
We also review competitor quotes line by line, free. Bring us another contractor’s written estimate for your Toto bathroom work, and we’ll walk you through it. No charge, no pressure. It’s one way we earn the job.
Common Toto Construction Problems We Solve in Irvine
- Toto Washlet+ S7 seat losing water temperature. In Irvine’s hard water (the city blends groundwater with imported supply, and calcium levels run higher in Orchard Hills and Portola Springs than homeowners expect), mineral scale builds on the instant water heater element inside the seat. The seat’s onboard sensor reads the scale as a fault and cycles the heater off to protect itself. You get lukewarm water and a blinking error. We descale the element and replace the OEM sensor when needed. Aftermarket heater elements for the S7 are out there; we won’t install them. Too many callbacks.
- Toto Neorest NX1 ghost-flushing at night. This is the one that spikes water bills quietly. The motion sensor board in the NX1 develops micro-fractures or loses calibration, and the toilet cycles flush after flush at 3 a.m. We replace the OEM sensor board, recalibrate sensitivity to the bathroom’s actual footprint, and reset the flush volume. Fixed before your next water bill lands.
- Toto Drake II slow internal leak at the flapper. The Drake II’s 3-inch flush valve doesn’t play nicely with a universal 3-inch flapper from a big-box store. It’ll seal for a week, then seep. You’ll hear the refill kick on randomly. We carry the Toto-spec aftermarket flapper that seats correctly against the Drake II’s chain geometry and tank dimple, and we install it with a tank-to-bowl gasket check while the water’s off.
- Tub-to-shower conversion in a slab-on-grade townhome. This is the big one in Portola Springs and parts of Northwood. The original Toto tub drain was embedded in the concrete slab with no access panel and no crawlspace. You can’t just pull the tub and drop in a shower pan. We cap the old drain, reroute the new P-trap through the nearest joist bay or wall cavity, and build the shower floor so it slopes correctly. If we have to open the ceiling below to reach the trap, we patch and texture it back before we leave.
- Roof leaks dripping onto a Toto Neorest in a WUI zone. Quail Hill and Shady Canyon sit inside California’s Wildland-Urban Interface fire code zone. That means Class A roofing assemblies and ember-resistant venting. When a roof leak starts above a bathroom with a $6,000 Neorest, the repair has to meet WUI material codes, not just patch the hole. We handle both: the roof replacement to WUI spec, and the fixture protection afterward.
BeforeAfterToto Service in Irvine: What Local Conditions Mean for Your Equipment
Here’s the problem nobody from Anaheim or Toto service in Santa Ana sees coming. In Irvine, a tub-to-shower conversion in a 1970s or 1980s Planned Community tract home often means the original Toto tub drain is capped and rerouted through a joist bay, because the slab-on-grade foundation left no crawlspace beneath the tub. Anaheim’s older pier-and-beam cottages give you access from below in an afternoon. Irvine’s slab gives you no access at all without cutting. That’s a specific condition tied to how the Irvine Company built these villages: dense attached units on concrete, plumbed fast and buried hard. When we convert a Toto tub in Woodbridge, the first question is always whether the drain line can run through the wall or whether we need to pull the ceiling below. We answer that question during the estimate walk-through, not after the slab is open. For homeowners considering a Toto tub-to-shower conversion in an older tract home, plan on that drain reroute. It’s the difference between a five-day job and a two-week one.
And in Northwood specifically, our crew did a tub-to-shower conversion where the homeowner’s Toto Neorest NX1 kept ghost-flushing at 3 a.m. We pulled the seat and found the motion sensor board had a hairline crack from an earlier power surge. We replaced the OEM board, reset the sensor sensitivity for the small half-bath footprint, and relaced the old tub with a Toto-compatible walk-in shower drain tied back through the same wall before the HOA’s 5 p.m. quiet hours. Both problems solved in one visit because we plan the plumbing and the fixture repair together.
Toto Models & Products We Service in Irvine
We work on the full Toto lineup you’re likely to have in an Irvine home. The Toto sales & service depth we carry covers the Neorest smart toilets (NX1 and NX2), the Washlet+ S7 bidet seats, the Drake II and Ultramax II gravity-flush toilets, and the less common Carlyle II and Legato wall-hung models. Our parts stance is consistent: for Neorest and Washlet+ electronics, it’s OEM or nothing. Aftermarket control boards and sensors cause service calls we never want to revisit. For basic Drake and Ultramax flappers, fill valves, and trip levers, we offer aftermarket kits that match Toto’s 3-inch flush geometry at a lower cost. But we’ll tell you straight: when a Toto ceramic bowl is cracked, repair is the wrong math. Replace it. We stock common OEM boards and sensors locally in our Orange County van inventory, which means most Irvine service calls happen same-week, not next-month.
Toto Service Pricing in Irvine
Here are the line-item ranges we quote in Irvine. These are written prices, not ballpark guesses, and they reflect the dual-permit reality and slab foundation work common in this city:
| Service | Price Range |
|---|---|
| Toto Tub-to-Shower Conversion (Drain Reroute + Shower Build) | $3,500 - $10,000 |
| Toto Neorest NX1 Sensor Board Replacement | $400 - $900 |
| Walk-In Shower Installation with Toto Fixtures | $4,500 - $12,000 |
| Roof Replacement to Protect Toto Bathroom Below | $8,000 - $20,000 |
What moves the number: whether the original tub drain is buried in slab (common in Portola Springs and Northwood), whether your home falls inside the WUI fire code zone (Quail Hill, Shady Canyon, Orchard Hills), and whether HOA architectural review adds a material restriction on tile, glass, or drain finish. Your free written estimate includes the exact break-out: parts, labor, permit filing, HOA submission support, and the photo record. Call (470) 298-9650 and we’ll put it in writing.
Serving Irvine, CA - Our Local Coverage Area
We’re based in the Irvine 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 Irvine
The generic 3-inch flapper will leak, slowly, after about a week. The Drake II’s flush valve is engineered around a specific chain length and tank dimple geometry, and a universal flapper seats imperfectly. We install Toto-spec aftermarket flappers that match the 3-inch spec, so the seal holds. Call (470) 298-9650 and we’ll quote the part and labor before we touch the tank.
Yes, in most Irvine villages it does. The HOA’s architectural review process, baked into your CC&Rs via Irvine Company design guidelines, typically requires written approval before you alter any plumbing fixture visible from the exterior or involving wall cavity work. In attached units, drainage changes often need neighbor notification. We prepare the scope and materials list for ARC submission; you file, we build once approval clears. The city’s final inspection won’t sign off without HOA approval, so we don’t skip it.
Orchard Hills sits near the wildland edge, and the groundwater blending there produces hard water with a higher calcium load than coastal Irvine. The S7’s instant water heater element scales over time, and the seat’s temperature regulation circuit chatters between heating and standby to protect itself. That’s the fluctuation. We descale the element with the seat pulled, replace the OEM thermistor if it’s drifted, and the temperature steadies. For an exact diagnosis at your address, call (470) 298-9650, and we’ll schedule a service visit with a written estimate first.
Yes. The City of Irvine requires a plumbing permit when a toilet is removed and reinstalled, because the flange and waste connection get disturbed. In a slab-on-grade home, the inspector verifies the flange seal and the water shutoff. We pull that permit, schedule the inspection, and pass it before we close the wall. Your written estimate includes the permit fee. No surprise add-on.
We see two, and they’re both plumbing-in-slab problems. The first is a Toto Neorest in a second-floor Great Park condo with a misaligned wax ring that leaked into the ceiling cavity below, ruining drywall and a portion of the neighbor’s crown molding. The fixture was fine; the installation wasn’t. The second is a tub-to-shower conversion where the original Toto tub drain was embedded in the slab with no access panel. The fix requires capping, rerouting, and ceiling work below, which pushes the job into the $8,000 to $10,000 range. This is why the written quote matters: we price the drain reroute before the slab is open, not after. Call (470) 298-9650 and we’ll walk your Great Park floorplan with you.
Service Areas Near Irvine
We serve Irvine and the surrounding Orange County cities. Our Irvine service area extends to Tustin, Newport Beach, Lake Forest, and Costa Mesa. If you’re looking for Toto service in Hialeah or Toto service in Garland, those pages cover our work in those markets. For Irvine, the call is local, and the crew knows the HOA map.
Book Your Toto Service in Irvine Today
Measure twice, say it once, show your work. That’s how we’ve run this company since 2007. If you’re pricing Toto fixture work in Irvine, get the number in writing. Call (470) 298-9650, and we’ll schedule your walk-through. The estimate is free, the scope is written, and the price is on the page before we pick up a tool.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Irvine since 2007.