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Toto Bathroom Remodeling: The San Francisco Owner’s Guide
Toto bathroom remodeling in San Francisco typically runs $10,620 – $33,040 for a full remodel, depending on the size of the room, the Toto fixtures you’re keeping or replacing, and what’s behind the walls once we open them up. Most Toto-specific work we do is partial: a failing fill valve in a Toto Washlet, a cracked tank on a Drake, or a shower valve that won’t hold temperature in an older Toto setup. The phone call usually starts the same way: “The toilet keeps running” or “The shower drips and I’ve already replaced the handle once.”
We handle the Toto part of the remodel and the room around it. That includes swapping a Toto toilet for a newer model, rebuilding the flange under a Toto that’s been rocking for years, or gutting a 1930s bathroom in the Inner Sunset and setting a Toto Nexus into a waterproofed Schluter shower system. Before any work starts, you get a written price. Every line. Every time.
Key takeaways:
- We install, match, and replace Toto products but we’re an independent contractor, not affiliated with Toto.
- Written pricing before work begins, always. That’s the Cedarwell Care Promise and it’s non-negotiable.
- Crews wear shoe covers, lay drop cloths, and quiet the tools during nap hours where possible.
- 365-Day Done Right Promise: if it’s not right, we return and make it right.
Which Toto Models This Applies To
We’ve worked on most Toto lines homeowners in San Francisco actually have installed: the Drake and Drake II, the Ultramax II, the Nexus, the Eco Soiree, the Promenade, and the Washlet series (C100, C200, C5, S550e, and the newer C2). We also see the older G-Max and Power Gravity systems in buildings that haven’t been touched since the late 1990s, particularly in the Richmond and Noe Valley.
The first thing we check is the tank lid and the inside of the tank wall. Toto stamps the model number there; the Washlet units have a data plate on the underside of the seat or behind the control panel. The gotcha worth knowing: Toto changed the rough-in and supply line sizes across generations. A Drake from 2008 does not always match the fill valve from a Drake manufactured after 2015, and the Washlet C100 and C200 have different remote and wiring harnesses than the C5 and S550e. If you order a one-size-fits-all fill valve online, you’ll find out at install that the overflow height is wrong and the tank refills past the mark. We match parts by model number, not by “it looked the same on the website.”
On aftermarket: for fill valves, flappers, and supply lines, a quality aftermarket part from a supplier like Korky (who actually makes Toto’s OEM fill valves) is a reasonable route. For Washlet control boards, spray wands, and heated seat elements, we recommend Toto OEM parts. The aftermarket options there are thin and the failure rates in San Francisco’s hard water aren’t worth the saved $30. We also stock parts support for KraftMaid, Cambria, and Silestone when the remodel includes cabinetry or counters.
Styles & brands we work with
Signs Your Toto Bathroom Remodeling Is Failing
- The toilet runs for 15 seconds after every flush, then stops. This is the fill valve losing its seal, common in Drake and Ultramax models after five to seven years in San Francisco’s mineral-heavy water. The valve still sets the water level, but the washer at the base has worn and the tank is slowly overfilling.
- The Washlet seat won’t heat, or heats intermittently. The heating element in the seat unit or the control board in the C100/C200 series is usually the culprit. In the Sunset District’s damp bathroom air, the wiring connectors corrode faster than the element fails.
- Water drips from the bowl refill tube into the overflow pipe long after the tank fills. The fill valve isn’t shutting off completely. It’s a small leak, but in a city with tiered water rates, a quarter-gallon a minute adds up fast.
- The toilet rocks slightly when you sit, and the wax ring has been replaced twice. The closet flange is cracked or settled. We see this constantly in pre-war San Francisco homes where the subfloor has shifted. No wax ring fixes a broken flange.
- The G-Max flush sounds weak, and a second flush is becoming standard. The flapper chain or the flush valve seal has stretched. On older Toto models, the flush valve is a Toto-specific diameter, so a generic flapper from the hardware store will not seat correctly.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
Here’s what the project typically costs in San Francisco, installed:
| Toto Project Type | Typical Price Range (Installed) | What’s Included |
|---|---|---|
| Toto toilet replacement (labor + parts) | $945 – $2,950 | Removal, flange inspection, new supply, new wax or rubber seal, installation, clean-up |
| Toto Washlet seat replacement or electrical repair | $590 – $2,360 | Diagnostic, OEM part if needed, install, remote pairing |
| Full bathroom remodel with Toto fixtures | $10,620 – $33,040 | Written scope, demo, plumbing, waterproofing, tile, Toto fixture setting, materials, clean-up |
| Small bathroom remodel with Toto fixtures | $5,900 – $14,160 | Compact-room scope, same written price and crew standards |
Labor is the biggest variable, and in San Francisco it’s driven by access and what’s behind the wall. A third-floor walk-up in a Marina District flat costs more in labor hours than a garage-level bath in the Excelsior. The written price before we start includes the parts, the labor, the hauling, and the protection we put down. If a flange is rotted and needs replacement, that’s a conversation with a photo and a number before we proceed, not a surprise line item at the end.
The 365-Day Done Right Promise covers the completed project. If something isn’t right within a year, we make it right. No forms. No runaround.
DIY or Call Us?
You can check three things safely without touching a wrench: the model number inside the tank, whether the water level sits at the marked line, and whether the supply valve at the wall is fully open. If the issue is a fill valve or a flapper, and you’re comfortable turning off the water and lifting the tank lid, a careful homeowner can replace those in an afternoon. We’re not going to pretend otherwise.
Where DIY goes sideways: Washlet electrical components, anything involving the wax ring or flange, and any situation where water has stained the ceiling below. A leaking toilet that’s been “fixed” with three wax rings is hiding a bigger problem. And if the floor around the toilet is spongy or the tile is cracked at the base, that’s a subfloor conversation, not a $9 flapper. Call us at (831) 480-4497 and we’ll tell you over the phone whether it’s worth a service visit. If it is, we’ll bring the part on the truck.
FAQs
A Toto toilet in San Francisco lasts 20 to 30 years with occasional fill valve and flapper replacement every five to seven years, though hard water in neighborhoods like the Mission and Bernal Heights shortens the life of internal components more than the porcelain. The porcelain itself will outlast every bathroom remodel around it.
Yes, a fill valve can often be repaired with a replacement washer or cap assembly if it’s a Korky-style valve, but when the valve body is worn or the float is sticking, replacement is faster and ends up cheaper in San Francisco labor rates. We’ll show you the damaged part before we install a new one. Call (831) 480-4497 and we’ll help you figure out which route makes sense.
A straightforward Toto toilet swap takes about two to three hours including flange inspection, supply replacement, water on, and a clean floor. If the flange is cracked or the subfloor is compromised, it’s usually a second visit or an extra four to six hours, and you’ll have a written number for that before we start cutting.
We stock common Toto fill valves, flappers, supply lines, and wax-free seals on our trucks, and we can source OEM Washlet parts and model-specific flush valves from local San Francisco plumbing suppliers the same day in most cases. If we don’t have the part, we’ll tell you before scheduling, not after the toilet is in the hallway. Call (831) 480-4497 for an exact quote, estimates are always free.
Written by Graham Stein, Owner, Elmstead Remodeling San Francisco at Elmstead Remodeling San Francisco, serving San Francisco and nearby areas.
