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Toto Construction in Torrance, CA | Mason Remodeling Co Torrance
We provide independent Toto fixture installation and repair across Torrance, from Old Torrance ranch homes to newer builds near Del Amo Fashion Center, as your local Torrance General Contractor. The thing that sets our Toto work apart here comes down to one local reality: most Torrance bathrooms we enter sit on slab-on-grade foundations with original cast-iron plumbing from the 1950s-70s, and a Toto toilet or tub valve doesn’t just drop in when the flange underneath has been rusting for sixty years. So we fix what’s below the fixture before we set the fixture. If you’re dealing with a leaking Toto Drake, a Clayton tub valve that won’t hold temperature, or you’re ready to convert a tub to a walk-in shower, call (424) 337-6939 for a free estimate. We cover every Torrance neighborhood, and we’ll tell you the truth about what’s behind the wall before we touch anything.
Why Torrance Residents Choose Us for Toto Service

We’ve worked inside enough Torrance bathrooms to know what actually fails in them. The original galvanized supply lines in tract homes built between 1950 and 1970 send sediment straight into fill valves. The slab floors settle, cracking toilet flanges that were set in cast iron. Salt air from the coast accelerates corrosion on metal trim. These aren’t hypotheticals to us; they’re the standard conditions we see on Torrance job sites every week.
Isaac Pruett, the owner of Mason Remodeling Co Torrance, grew up in Los Angeles watching relatives rebuild aging homes, studied construction technology at Los Angeles Trade-Technical College, and has spent nearly two decades working through every phase of residential remodeling, from rough framing to finish carpentry. He reads a job site quickly and gives homeowners a straight answer. You should know what’s happening in your home before anyone starts work, and that’s the standard we work to.
We’re independent Toto service providers, not a manufacturer-authorized shop. That independence matters: we recommend fixes based on what the home actually needs, not a corporate playbook. When a part should be genuine Toto, we use genuine Toto. When a mid-grade aftermarket cartridge makes more sense for a 1973 Clayton valve, we tell you that straight and hand you a written price before any work begins.
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Common Toto Construction Problems We Solve in Torrance
Here’s what we walk into most often in Torrance homes:
- Noisy or running Drake and Ultramax fill valves. The original galvanized supply lines in Torrance tract homes shed sediment constantly. That grit works its way into the fill valve seat, and the toilet runs intermittently or makes a hissing noise at 3 a.m. We flush the line, replace the valve with a genuine Toto unit, and the noise stops.
- Clayton tub and shower valves that drip or won’t hold temperature. Many Torrance homes had original multi-turn stops swapped for modern cartridges years ago, and the match isn’t always right. We rebuild Clayton rough-in valves the correct way, or we tell you honestly when replacement beats rebuilding.
- Seized Nexus pop-up assemblies and aerators. South Bay water is hard, especially in older Torrance apartment buildings with centralized hot water. Mineral scale locks up Nexus aerators and pop-up rods until the faucet barely functions. We soak, clean, and rebuild where possible, and replace when the corrosion has gone too far.
- Cracked toilet flanges on slab-on-grade bathrooms. This is the big one in Torrance. Original cast-iron closet bends settle and crack under 1950s-60s slab homes. The flange breaks, the Toto rocks, and sewage seeps under the tile. We replace the closet bend and flange, then set the Toto back on a solid footing.
- Tank-to-bowl gasket leaks on mid-century floors. A seeping gasket on a Toto Drake can quietly ruin an original oak floor for months before anyone notices. We catch these early, replace the gasket with a genuine Toto part, and preserve the flooring underneath.
Toto Service in Torrance: What Local Conditions Mean for Your Equipment

Torrance is one of the few South Bay cities with a large stock of 1950s-60s slab-on-grade ranch homes where original cast-iron waste lines run directly under the concrete slab. That single construction detail changes how Toto toilet work goes here, and it’s not a factor in nearby cities like Redondo Beach or Manhattan Beach, where most homes sit on raised foundations with accessible crawlspaces. When the cast-iron closet bend under a Torrance slab corrodes, the Toto toilet can’t seat properly no matter how carefully you set it. The flange cracks, the bowl rocks, and the wax ring fails. So before we install any Toto in a Torrance slab home, we check the bend, and we replace it with a PVC compression fitting and a stainless flange when it’s rusted through. It’s extra work the home should have gotten sixty years ago, but it’s the only way to make the Toto hold. We do this work regularly in Old Torrance, along Sartori Avenue, and throughout the mid-century tracts near Wilson Park.
Last month our crew worked on a 1962 ranch on Sartori Avenue in Old Torrance. The homeowner had a Toto Drake with a cracked tank-to-bowl gasket that had been seeping onto the original oak floor. We pulled the toilet, found the cast-iron closet bend was rusted through at the flange, so we replaced the bend with a PVC compression fitting, set a new stainless flange, and reinstalled the Drake with a genuine Toto gasket and fill valve. No more leak, and no change to the period bathroom layout.
Toto Models & Products We Service in Torrance
We work on the Toto fixtures we see most often in Torrance bathrooms: Drake series toilets, Ultramax series toilets, Clayton series tubs and lavatories, and Nexus series faucets and shower trims. For warranty-covered failures or problems in the flush tower or electronic controls, we install genuine Toto parts, because the tolerances matter. For older Clayton and Nexus trim, we often recommend mid-grade aftermarket cartridges and aerators that match the original flow and finish but cost less than OEM, and we’ll tell you straight when a worn tub valve is better off replaced than rebuilt.
Our Toto construction and Toto sales & service work covers everything from single-fixture repair to full bathroom remodels, including tub-to-shower conversions, walk-in shower installations, and bathroom vanity installations. We keep common Toto parts on our trucks so most Torrance service calls get done in one visit.
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AfterToto Service Pricing in Torrance

Here are the price ranges we quote for Toto-related work in Torrance. These include labor, standard materials, and the written line-item price we provide before any work starts:
| Service | Price Range |
|---|---|
| Tub-to-Shower Conversion with Toto fixtures | $3,500 – $10,000 |
| Walk-In Shower Installation with Toto valve | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
| Tile & Flooring | $800 – $2,500 |
What swings the number most is what’s hidden: the condition of old cast-iron waste lines, whether the slab has settled, and how much original tile you want preserved. Our free estimate includes a written line-item price, so you see exactly what you’re paying for before we open a wall. Call (424) 337-6939 to schedule yours. If your Toto repair is an isolated fix rather than a remodel, we’ll quote that separately at the same visit.
Serving Torrance, CA - Our Local Coverage Area
We’re based in the Torrance 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 Torrance
No, a rocking Toto toilet is not normal, and in Torrance slab-on-grade homes it usually means the cast-iron closet flange underneath has cracked or settled. We repair or replace the flange and reseat the toilet so it sits solid. Call (424) 337-6939 and we’ll check it during a free estimate.
Yes, in most mid-century Torrance bathrooms the tub footprint works as-is for Bathroom Remodeling in Torrance like a walk-in shower. We remove the tub, install a Toto shower valve and drain, waterproof the walls, and tile. Walls stay put. Call (424) 337-6939 for a free estimate, and we’ll tell you exactly what fits in your existing footprint.
That 10-second run is typically sediment holding the fill valve open, common in Torrance condos with older galvanized supply lines feeding the building. We clean or replace the fill valve with a genuine Toto part and the toilet stops running. For an exact fix, call (424) 337-6939 and we’ll have a technician out to diagnose it.
Not necessarily. Loose Nexus handles often mean worn cartridges or corroded trim, not a failed rough-in valve. We rebuild where the valve body is sound, and we’ll tell you straight if replacement is the smarter money. Call (424) 337-6939 for a free estimate, and we’ll inspect the valve before quoting.
Yes, tub-to-shower conversions in Torrance require a building permit because they change the plumbing rough-in and waterproofing assembly. A straightforward toilet replacement does not. We pull permits on every Torrance job that needs one and handle the inspections. Call (424) 337-6939 to talk through your project.
Service Areas Near Torrance
We work throughout the Torrance service area, including Old Torrance, the Del Amo corridor, and the neighborhoods near Wilson Park. Our crews also serve Toto service in Westchester, Toto service in Redondo Beach, plus Manhattan Beach, Wilmington, and Inglewood. If you’re a few blocks outside Torrance city limits, call us; we’ll likely be able to help.
Book Your Toto Service in Torrance Today
If your Toto fixture is leaking, running, rocking, or you’re planning a tub-to-shower conversion in Torrance, call (424) 337-6939. A live person answers around the clock, and we’ll set up a free estimate with a written line-item price. We’ll tell you exactly who’s coming to your door, by name, before we arrive.
Written by Isaac Pruett, Owner at Mason Remodeling Co Torrance, serving Torrance since 2004.











