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CWS Bathroom Remodeling: The San Jose Owner’s Guide
CWS bathroom remodeling in San Jose typically runs $10,620 – $33,040 installed, depending on the size of the room, the condition of the plumbing, and whether you’re refreshing finishes or moving walls. We stock common CWS-compatible replacement components on our service trucks, and we can usually match failed parts to your existing setup the same day we come out. Most San Jose homeowners discover a failing CWS bathroom system the way you just did: a shower valve that’s suddenly stiff or dripping, a vanity door that won’t stay aligned, or grout that’s cracking along the pan and letting water into places it shouldn’t be.
Which CWS Models This Applies To
CWS bathroom systems come in a few common series lines, and the part that fits one doesn’t always fit another. The most frequent compatibility issue we see in San Jose homes is the shower valve cartridge: CWS has used both a 35mm ceramic disc cartridge and an older 46mm pressure-balance cartridge across different series years, and they are not interchangeable. You can usually identify which one you have by pulling the trim plate and looking at the cartridge face, or by finding the model number stamped on the escutcheon or the valve body behind it.
For cabinetry and vanity components, CWS used two hinge patterns depending on the door style: a 35mm cup hinge on shaker and flat-panel doors, and a 26mm cup on older raised-panel doors. Measure the cup bore before buying a replacement. We install both, and we’re not affiliated with CWS, so when an OEM part is backordered or discontinued we’ll tell you straight and match a quality aftermarket equivalent that carries the same fit and warranty.
Styles & brands we work with
Signs Your CWS Bathroom Remodeling Is Failing
- The shower valve drips or won’t hold temperature. The cartridge’s internal seals fail over time, especially in San Jose’s hard water, which deposits mineral scale that scores the ceramic discs. You’ll notice a slow drip that gets worse, or temperature swings when someone flushes a toilet.
- Grout or caulk at the pan is cracking or darkening. This means the waterproof layer underneath is being stressed. In older CWS installations, we often find the original installer skimped on the cement board substrate (the moisture-resistant layer behind your tile), and the grout cracks as the substrate flexes.
- A vanity door or drawer won’t stay closed or sits crooked. The hinge cup has loosened or the door frame absorbed moisture from bathroom humidity. This is usually a hinge replacement and a quick adjustment, not a cabinet teardown.
- Water stains on the ceiling below the bathroom. The shower pan’s drain seal has failed, or a supply line connection behind the vanity has been weeping. This is the one that turns a $1,000 fix into a $15,000 fix if you wait, because the floor joists and subfloor start to rot.
- The toilet rocks or the floor around it feels soft. A wax ring that’s given out lets water wick into the subfloor every time the toilet is flushed. Over months, the plywood underneath turns spongy. If the toilet moves when you lean on it, don’t ignore it.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
A CWS bathroom remodeling project in San Jose lands between $10,620 and $33,040 as a full replacement of the key components: shower valve and trim, vanity and top, toilet, lighting, and tile work. A small bathroom remodel runs $5,900 – $14,160, and a walk-in shower installation alone is $5,310 – $14,160. The range moves based on three things: how many plumbing fixtures move, what tile and countertop material you pick, and whether the waterproofing underneath needs to be rebuilt.
We give you a written price before any work starts. That number includes parts, labor, permits where required by Santa Clara County, and the 365-Day Done Right Promise: if it fails inside a year, we come back and fix it at no charge. If a repair fails, the second visit is also free, no service call, no re-inspection fee.
Key Takeaways:
- CWS shower cartridges are not universal; 35mm and 46mm versions do not swap.
- Full CWS bathroom remodel in San Jose: $10,620 – $33,040.
- Written price before work starts. Always.
- 365-Day Done Right Promise on every job, in writing.
DIY or Call Us?
There are a few things a homeowner can safely do: check if a vanity door is loose at the hinge screws, replace a showerhead, or clear a slow drain with a hand snake. Where DIY goes wrong is anything that touches the shower valve body or the waterproofing. Cutting into a wall to reach a CWS cartridge without knowing the exact depth and fit means you can crack the valve body or nick a supply line inside the wall, and now you’re replacing drywall and plumbing instead of a $25 cartridge. The tension and sealing requirements behind a shower pan are not a weekend project, either.
If you can see the failure but can’t fix it safely, call (669) 274-2362 and we’ll get you on the schedule. Give me the real problem and I’ll give you the real number.
FAQs
A properly installed CWS bathroom system should last 15 – 20 years with normal use in San Jose, though shower cartridges and wax rings typically need replacement every 5 – 8 years because of our water hardness and daily use cycles. Call (669) 274-2362 for an exact assessment of your bathroom’s condition.
Yes, in many cases. A dripping shower valve usually needs only a new cartridge, not a full valve replacement, and a loose vanity door is almost always a hinge swap. We’ll tell you if a repair will hold or if you’re throwing money at a component that’s already past its service life. Call (669) 274-2362 and we’ll walk you through what we’re seeing.
A full bathroom remodel in San Jose typically takes 2 – 4 weeks from demo to final inspection, depending on permit timing and whether the waterproofing substrate needs to be rebuilt. A single part replacement like a shower cartridge or vanity hinge is a same-day job in most cases.
We stock common CWS-compatible cartridges, hinges, trim kits, and drain assemblies on our trucks, and we source OEM CWS parts when the fit requires it. You won’t be asked to order parts yourself and wait. Call (669) 274-2362 for a free estimate on your specific replacement.
If your CWS bathroom is showing its age, start with a phone call. We’ll come out, look at what’s failing, and hand you a written number for the fix or the full remodel, whatever the situation calls for. Serving San Jose, Willow Glen, Campbell, and the surrounding South Bay. Call (669) 274-2362 today for your free estimate.
Written by Trevor Nash, Owner, Penhallow Remodeling San Jose at Penhallow Remodeling San Jose, serving San Jose and nearby areas.
