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Toto Construction in Costa Mesa, CA | Ashbury Contractors
We install, service, and replace Toto toilets and washlet seats across Costa Mesa’s 92626, 92627, and 92628 ZIP codes. That includes full bathroom remodels where Toto fixtures are part of the scope, from the 1950s ranch baths near the rear alleys to new custom builds on torn-down lots. The thing that separates our Toto work in Costa Mesa from anywhere else is this: coastal marine air corrodes washlet electronics faster here than fifteen miles inland, and most service crews don’t plan for it. We do. Call (833) 467-4091 for a free estimate on any Toto install or repair.
Why Costa Mesa Residents Choose Us for Toto Service
We’ve handled Toto fixtures in enough Costa Mesa remodels to know exactly how the Drake, Ultramax II, and Washlet lines behave when they’re living a mile from the ocean. That’s the difference between swapping a part and fixing the condition that killed it. When a washlet board goes down in a 92627 ranch, the humidity that did it doesn’t leave with the old part. We deal with both.
Noel Quintero runs Ashbury Contractors, and he grew up watching shortcuts fail in the older ranch homes off Red Hill Avenue in Tustin. He spent two-plus decades working every phase of residential builds across Orange County before building this crew. His approach with Toto work is the same as with every trade we handle: specify the product before we quote the price, and build the install to survive the conditions that actually exist here.
We’re an independent contractor crew. Toto does not authorize, sponsor, or endorse us. That’s worth saying up front because it means our recommendations don’t come from a brand playbook. They come from pulling fixtures apart in Costa Mesa homes and seeing what the coastal air does to them year after year.
Styles & brands we work with







Common Toto Construction Problems We Solve in Costa Mesa
These are the failures we see repeating across Costa Mesa bathrooms. Each one ties back to a local condition, not just a bad part.
- Washlet power supply and control board corrosion. The S550e, C5, and K300 seats fail at the board most often in 92627 homes. Persistent marine-air humidity and the nightly dew cycle settle on the electronics inside the seat housing. Inland units don’t see this. We replace boards with OEM units and seal the install so moisture has a harder time getting back in.
- Fill and flush valves scaling and sticking. Drake and Ultramax tanks in Costa Mesa pick up a mineral-and-humidity combination that gums the valves faster than you’d expect. The 92626 tear-down homes with new plumbing still deal with the same air. If a tank hisses or runs, we swap the valve rather than telling you to live with it.
- Hairline cracks at the glazed trapway or rim on one-piece bowls. Tight zero-lot-line remodels force careful staging. A toto Ultramax II bowl gets bumped during rough-in, and a hairline crack shows up weeks later. We’ve seen enough of them to know when a crack is cosmetic and when it’s a leak waiting to spread through the subfloor.
- Wax ring and flange corrosion under the toilet. The older 92627 ranch baths sit on damp, poorly vented slabs. The wax ring fails and the flange rusts, and the toilet starts rocking. We pull the bowl, rebuild the flange, and set the toilet properly on a sealed base.
- Original 1950s rough-in measurements fighting modern Toto dimensions. A Soirée or Clayton one-piece doesn’t always land where the old wall-hung tank left off. We rework the rough-in during remodels so the new fixture sits right without gaps or adapters that look like an afterthought.
Toto Service in Costa Mesa: What Local Conditions Mean for Your Equipment
Costa Mesa sits on the coastal plain about a mile from the ocean. That means salt-laden marine air, mild temperatures, and a dew cycle that hits every exposed surface overnight. Most of the housing stock was built between the late 1940s and early 1960s as small single-story stucco ranches on tight lots, many with detached garages and rear alleys. Put those two facts together and you get a bathroom environment that inland Orange County doesn’t replicate. A Toto Washlet installed in a 92627 ranch bath will corrode faster than the same seat in a North Tustin hillside home because the air moves differently and the slab never fully dries. We specify sealed, ventilated installs and moisture barriers because swapping parts without changing the environment just guarantees a repeat failure. A previous contractor’s repair that ignores this is exactly the kind of job that lands on our list when it fails again.
Here’s one that stuck with us. On a 1950s ranch rebuild off the rear alley in 92627, our tech pulled a Toto Washlet off a seven-year-old Drake and found the control board and power supply corroded from the coastal dew cycling, with the fill valve scaled and sticking. We replaced the washlet board with an OEM unit, swapped the fill and flush valves, and re-detailed the vent and moisture barrier before setting the toilet back in the reworked bath. The seat has run clean since. That’s the Costa Mesa difference, and it’s also why we keep Toto parts on hand for faster local turnaround.
Toto Models & Products We Service in Costa Mesa
We work across the Toto lines that dominate Costa Mesa remodels: the Drake CST743 series two-piece toilets, the Ultramax II one-piece bowls, and the Washlet S550e, C5, and K300 electronic seats. The Soirée, Clayton, and Entrada lines show up in builder and remodel supply runs, and we handle those too.
For parts, our rule is simple. Genuine Toto OEM fill valves, flush valves, flappers, and washlet boards go on anything still within a realistic service life. We use quality aftermarket only for cosmetic or non-critical items where OEM is discontinued. If a washlet board or one-piece bowl is failing on a fixture past its practical life, we’ll tell you straight whether repair or replacement makes more sense. We’re not here to milk a dying fixture for repeat service calls.
We also handle full Toto installs as part of Toto sales & service work across every Costa Mesa neighborhood we cover.
See the difference
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AfterToto Service Pricing in Costa Mesa
The cost of Toto work depends on what’s being done: a fill valve swap is a quick repair, while setting a new one-piece bowl inside a full remodel is a different scope entirely. Here are the ranges we quote for the bathroom work that usually involves Toto fixtures:
| Service | Price Range |
|---|---|
| Full Bathroom Remodeling | $9,000 – $28,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
A free estimate from us includes a written line-item quote, so you know exactly what you’re paying for before any work starts. We don’t change the number once the job begins. Call (833) 467-4091 to schedule yours.
Serving Costa Mesa, CA — Our Local Coverage Area
We’re based in the Costa Mesa 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 Costa Mesa
Costa Mesa’s coastal air carries salt and stays damp, and the nightly dew cycle pushes moisture into the electronics housing of the washlet seat. The power supply and control board corrode over time, and inland units fifteen or twenty miles away don’t see the same conditions. We seal and ventilate installs to slow that process down. Call (833) 467-4091 for an exact diagnosis, estimates are free.
Yes. A running or hissing Drake usually needs a fill valve, a flush valve, or both, and replacing those with genuine Toto OEM parts is a standard repair. The toilet itself doesn’t need to be replaced unless the bowl or trapway is cracked. We’ll tell you which one you’re dealing with.
We do. Toto fixtures are part of the finish scope in most of our Costa Mesa bathroom remodels. That includes rough-in adjustments for one-piece bowls on older slabs, washlet electrical runs, and sealing the install for coastal conditions. The 92626 tear-downs often have brand-new plumbing, but the air is still the same salt-laden marine mix.
Most of the 1950s ranch bathrooms in Costa Mesa are small, and a one-piece bowl like the Ultramax II actually works well because its footprint is compact and the skirted sides are easy to keep clean. The catch is the rough-in: older homes sometimes need the flange moved or the drain reworked. We handle that during the install rather than leaving you with an adapter that looks temporary.
No. Ashbury Contractors is an independent General Contractor – Costa Mesa that installs and services Toto fixtures as part of our remodels and repair work. We’re not authorized, sponsored, or endorsed by Toto. What we have is years of hands-on time with the Drake, Ultramax II, and Washlet lines in Costa Mesa’s specific coastal conditions, which matters more when you’re diagnosing a failure than any dealer badge.
Service Areas Near Costa Mesa
Most of our Toto work stays within Costa Mesa’s 92626, 92627, and 92628 ZIP codes, but we regularly handle projects in Newport Beach Toto service, Tustin, Santa Ana, and Irvine as well. If you’re in a neighboring city, call us and we’ll confirm coverage.
For Toto service outside Costa Mesa, see our Toto service in Placentia page or the Toto service in San Joaquin Hills page. You can also check our full Costa Mesa service area breakdown to see every ZIP we cover.
Book Your Toto Service in Costa Mesa Today
If your Toto washlet is dead, your Drake won’t stop running, or you’re planning a full bathroom remodel in Costa Mesa, call us. We’ll send someone out, figure out what’s actually wrong, and quote the fix. Reach us at (833) 467-4091 today.
Written by Noel Quintero, Owner at Ashbury Contractors, serving Costa Mesa since he started building in Orange County.