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Toto Construction in El Cajon, CA | Penhallow Remodeling San Diego
We provide independent Toto service across El Cajon, from Drake toilet rebuilds to full Bathroom Remodeling - El Cajon built around Toto fixtures. The thing that separates our Toto work here: we know exactly what hard water and 1950s-era plumbing do to these products, and we price the fix in writing before touching a bolt. You won’t get factory protocols or an authorized-dealer markup. You’ll get a straight answer, a written number, and a crew that shows up when we said we would. Call (619) 604-9624 and tell us what’s failing, and we’ll tell you what it costs to make it right.
We’re Penhallow Remodeling San Diego, and our Toto work lives under the same Toto sales & service promise as every job we run: written price before work starts, a real arrival window, and a 365-Day Done Right Promise in writing. Most Toto calls we take in El Cajon come from homeowners tired of chasing leaks or ghost-flushing through two or three previous “fixes.” Nobody should need a third trip for a toilet that still runs at 2 a.m.
Why El Cajon Residents Choose Us for Toto Service

Trevor Nash has spent the better part of two decades running remodeling crews across San Diego, and a good share of that work has been in El Cajon bathrooms where original galvanized supply lines meet brand-new Toto fixtures. He learned early that a Toto toilet on a rusted 1960s flange is not a toilet problem. It’s a plumbing archaeology problem with a porcelain finish. So we treat it that way.
We stock OEM Toto fill valves, flappers, and mounting hardware, and we keep aftermarket upgrades from Korky and Fluidmaster on the truck for hard-water failures where a larger debris screen beats the factory part. When we tell you a rebuild gives you back factory flush performance, we’re saying that because we’ve done it in El Cajon homes on Woodside, Fletcher Hills, and along Chase Avenue. When we tell you a bowl is done, we’re saying that because the rim jets are mineral-plugged beyond descaling and no honest contractor should pretend otherwise.
Every tech who walks into your home is background-checked and in uniform. You’ll know who you let in. And you’ll have our written guarantee on the repair before we start, not after we leave.
Styles & brands we work with







Common Toto Construction Problems We Solve in El Cajon
- Ghost-flushing Drake toilets from hard-water scale. El Cajon’s water leaves mineral deposits inside the G-Max fill valve after three to five years, especially in homes without softeners. The valve drips, the tank refills at odd hours, and the toilet sounds haunted. A rebuild with an OEM or upgraded aftermarket valve ends it.
- Weak Ultramax II bowl rinse from clogged Tornado Flush rims. Those rim jets are small and El Cajon’s calcium loves them. When scale plugs the jets, the bowl doesn’t rinse clean and you’re flushing twice. Sometimes descaling works. Sometimes the rim is gone and replacement is the only honest call.
- Washlet C100 thermal fuse failures during summer voltage drops. When your AC compressor kicks on in July, the voltage sags. That pops the C100’s warm-water tank thermal fuse, and suddenly the seat heater and remote are dead. We diagnose it quickly and replace the fuse or the seat, whichever the failure calls for.
- Skirted Nexus bowls leaking under the skirt on out-of-level slabs. Older El Cajon slabs settle, and a Nexus hides its flange bolts behind a skirt. If the wax ring height isn’t matched to the floor, seepage starts and you don’t see it until baseboards swell. We fix the flange, set the bowl level, and seal it correctly.
- New Toto fixtures on original cast-iron closet bends. Those 1950s and 60s bends corrode from the inside out. A new Drake on an old cast-iron flange rocks, leaks, or both. We replace the flange with a stainless repair ring and shim the bowl so it sits dead level on the finished floor.
Toto Service in El Cajon: What Local Conditions Mean for Your Equipment

Here’s a fact about El Cajon that doesn’t apply the same way in La Mesa or San Diego proper: the original 1950s and 60s tract homes on streets like Taft and Madison were built with 1/2-inch galvanized supply lines and cast-iron closet bends. That combo has been rusting for sixty years. So when someone installs a modern Toto Drake on an original flange in one of these bathrooms, the bowl frequently rocks or weeps at the base, not because the toilet is defective but because the flange under it is gone. We replace the corroded flange, shim the bowl to true level, and the toilet suddenly works like the engineering Toto actually shipped. This is the fix we make on almost every older El Cajon bathroom tear-out, and it’s the reason our crews carry stainless repair rings and reinforced wax in the truck as standard kit, not as a “while we’re here” upcharge. If you live in a pre-1980 home in El Cajon, assume the flange is part of the job until we prove otherwise.
One recent example: our tech pulled a cracked Toto Ultramax II in a 1962 stucco rancher on Lemon Avenue. The homeowner had a slow leak at the base he only noticed when the bathroom floor started discoloring. The original cast-iron flange had rusted through and the bowl’s horn was sitting off-center on the wax ring. We chipped out what was left of the old flange, set a stainless repair ring on the slab, and reinstalled the Ultramax with a double-thick reinforced wax. Two summers later, that floor is dry.
Toto Models & Products We Service in El Cajon
We work on the full Toto lineup you’re likely to have in an El Cajon home: the two-piece Drake with G-Max flush, the one-piece Ultramax II with Tornado Flush, the Washlet C100 and C200 series bidet seats, and the skirted one-piece Nexus. That covers most toilets built in the last twenty years, plus the washlets people bought during the bidet boom.
Our parts approach is simple. If an OEM Toto fill valve or flapper gets your fixture back to factory performance, we install it. If your failure is hard-water scale, we often recommend a Korky or Fluidmaster aftermarket valve with a larger debris screen, because El Cajon water will clog a small-screen OEM valve again in three years. You get the part that fits your water, not the part that fits a factory service bulletin. We stock common components locally so most El Cajon calls don’t wait on a warehouse shipment.
Don’t mistake independence for inexperience. We see Toto products inside El Cajon remodels every week: pulling Drakes and Ultramaxes for floor repairs, resetting Washlets on new circuits, waterproofing around Toto showers in full bathroom tear-outs. El Cajon service area coverage is where most of that work happens for us.
See the difference
Before
After
Before
After
Before
AfterToto Service Pricing in El Cajon
| Toto Service | Typical Price Range |
|---|---|
| Toto Drake toilet replacement (including flange repair) | $800 – $2,500 |
| Toto Washlet C100 replacement seat and valve | $900 – $3,000 |
| Full bathroom remodel with Toto fixtures | $9,000 – $28,000 |
| Tub-to-shower conversion with Toto shower valve | $3,500 – $10,000 |
What moves the number? On a Drake replacement, it’s flange condition. A rotted cast-iron flange adds chipping, a stainless repair ring, and possibly a new supply line. On a Washlet, it’s whether the seat heater alone is dead or the whole control board needs replacement. On a full remodel with an El Cajon General Contractor, it’s the cabinet line, countertop material, and whether we’re moving plumbing. Every estimate we write in El Cajon includes the same thing: a written price before demolition starts, no verbal ballparks. Call (619) 604-9624 for a free estimate and we’ll tell you what your job costs.
Serving El Cajon, CA - Our Local Coverage Area
We’re based in the El Cajon 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 El Cajon
Why does my Toto Drake ghost-flush or keep running in my El Cajon home? Almost always, hard-water scale has built up inside the G-Max fill valve, causing slow tank refill and intermittent flushing. We rebuild the valve with an OEM or upgraded aftermarket part, and the ghost-flushing stops. Call (619) 604-9624 and we’ll give you a written price for the rebuild before we schedule it.
Can you reset a Toto Washlet C100 that won’t heat the seat or water after a hot summer? Yes. In El Cajon, summer voltage drops when air conditioners kick on can pop the C100’s thermal fuse. If the fuse is the failure, we replace it. If the control board is fried, we quote a seat replacement. First sentence aside, call us at (619) 604-9624 and describe what the seat does when you press the remote; we’ll tell you which failure you’re looking at.
I’m replacing my 1960s El Cajon bathroom floor; will my existing Toto Nexus skirted toilet fit the new finished floor height? Maybe not without help. A Nexus hides its mounting bolts behind the skirt, so the wax ring has to match the new floor height exactly or you’ll get hidden seepage under the base. We set the flange height to the new floor before it goes in, then reset the bowl. It’s a detail we handle on nearly every older El Cajon bathroom remodel.
The rim jets on my Toto Ultramax II are clogged with white scale. Is that a repair or replace? It depends on how far the scale has gotten. If descaling opens the jets and the bowl rinses clean, we repair. If the rim is mineral-plugged beyond recovery or the bowl’s glaze is damaged, replacement is more honest. We’ll show you what we’re seeing, not just tell you. Call (619) 604-9624 for a straight answer and a written quote either way.
Do I need a dedicated circuit for a Toto Washlet in an older El Cajon home with original aluminum wiring? Yes, and this is one place we won’t take shortcuts. A Washlet’s heater draws real amperage, and original aluminum wiring in 1960s El Cajon homes wasn’t built for that load. We run a dedicated circuit or upgrade the branch wiring as part of the install. Call (619) 604-9624 and we’ll tell you what your panel and wiring can handle before you buy the seat.
Service Areas Near El Cajon
We serve El Cajon and the surrounding communities: Toto service in San Diego, Toto service in Chula Vista, La Mesa, Santee, and Del Mar. If you’re close enough to know El Cajon’s summers, you’re close enough for our truck to reach you.
Book Your Toto Service in El Cajon Today
Call (619) 604-9624 and tell us what your Toto is doing, or not doing. We’ll schedule a time, show up in the window we gave you, and hand you a written price before touching a single bolt. That’s the whole arrangement.
Written by Trevor Nash, Owner at Penhallow Remodeling San Diego, serving El Cajon since 2004.












