







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Cupertino
A full bathroom remodel in Cupertino typically costs between $9,000 and $28,000, and a smaller refresh runs $5,000 to $12,000. Those are real numbers we put in writing before the first tile is pulled. We’re Penhallow Remodeling San Jose, and our Bathroom Remodeling team works in Cupertino weekly, from Monta Vista to Seven Springs to the newer builds near Homestead Road. If you’re planning a remodeling project, call Trevor Nash at (669) 274-2362 for a free written estimate. A live person answers, every time.
Why Penhallow Remodeling San Jose Is Cupertino’s Preferred Bathroom Remodeling Company

Cupertino homeowners tend to ask sharper questions than most. They’ve usually done the research, read the permit requirements, and priced the Cambria slab before we ever walk through the door. That’s exactly the kind of client we work best with. We give a written price before any work starts, we show up inside the window we gave, and every project carries the 365-Day Done Right Promise in writing. If something fails inside that year, we come back and fix it at no charge.
Our technicians are background-checked and arrive in uniform, so the person at your front door is someone you can verify and trust. The Kingswell Way has been our operating standard since 2004, and it runs on three plain rules: say the price before the work, show up when we said, leave the place cleaner than we found it. We don’t ask for a deposit on a verbal ballpark. We hand you a fixed number, in writing, and then we honor it.
Styles & brands we work with







Bathroom Renovation in Cupertino
Bathroom Renovation in Cupertino usually means something beyond a surface refresh: we’re reconfiguring the footprint, replacing the waterproofing, upgrading the venting, and often coordinating with a designer or architect on finishes that simply are not stocked at the local big box. On a 1960s Monta Vista ranch, a full gut to the studs with custom cabinetry and a frameless glass shower enclosure lands between $9,000 and $28,000, depending on slab work, moving plumbing, and the material tier. The lead range for this page covers the entire scope, and we never deviate from the written number unless you add scope mid-project.
Custom Cabinetry and Millwork
We build vanities and built-ins from KraftMaid and Wellborn lines, and we can spec custom door profiles and paint-to-match finishes for a true architectural look. If you want a wall of storage where the old linen closet sat, that is a woodworking job as much as a plumbing job. We’ll bring samples and pricing to your kitchen table before we ever order a box.
Designer and Architect Coordination
Many Cupertino bathroom renovations start with a designer’s plan and a permit set. We take those drawings, flag anything that will not clear inspection with the city, and produce a written price that matches the actual scope. If the plan calls for a specialty shower valve that is on backorder, we tell you before you sign, not after the drywall is open.
Small Bathroom Remodel in Cupertino

A Small Bathroom Remodel in Cupertino typically runs $5,000 to $12,000. This covers a powder room or a compact hall bath where you’re keeping the existing footprint but replacing the vanity, fixtures, toilet, flooring, and possibly the shower surround. The key on a small bathroom in Cupertino is that the rough-in location matters more than the finish. If your existing cast-iron drain is off-center by a couple of inches and you want a centered shower pan, that triggers a concrete cut. We’ll catch that during the site inspection and price it into the written quote before you sign.
Vanity and Fixture Replacement
A hall bath vanity swap with new Kohler or Moen fixtures and a tile backsplash can refresh the room for $800 to $3,000 when the plumbing stubs stay put. We’ll inspect the existing shutoff valves during the estimate, because a 50-year-old valve that has never been exercised will often leak the moment you touch it. Replacing it during the job costs a small line item. Replacing it after it fails costs a wall repair.
Tub-to-Shower Conversion Without Moving the Drain
Many Cupertino homeowners want the tub gone but the drain to stay right where it is. That’s the smart play on a slab home: rip out the tub base, install a solid surface shower pan that fits the existing 1-1/2 inch drain location, and you avoid a concrete cut entirely. Budget $3,500 to $10,000 depending on wall waterproofing, glass, and tile.
Trusted Brands We Service in Cupertino
We work closely with the product lines Cupertino homeowners consistently ask for by name. For windows and glass that often frame a high-end bathroom addition or a bump-out, we install CGI, CWS, and ES Windows products. We stock common replacement parts for these brands in our Bay Area warehouse, so a broken shower window or a specialty sidelight does not add eight weeks to the calendar. When the materials behind the guarantee matter as much as the labor, naming the product line matters. We’ll never quote you a no-name window and call it premium.
See the difference
Before
After
Before
After
Before
AfterCommon Bathroom Remodeling Problems We See in Cupertino Homes
- Slab work surprises: Most pre-1980 Cupertino homes are slab-on-grade. The drain lines run through or under the concrete, and moving a toilet more than a few feet means cutting the slab and triggering a city supplemental permit. We tell you before the job, not after the tile is stacked in your garage.
- Protected oaks and setback reviews: If your bathroom addition pushes the exterior wall outward, Cupertino’s lot-specific setbacks and protected tree ordinances can stall the permit. A Seven Springs homeowner once planned a six-foot bump-out, and the oak canopy rule shrank it to four feet before the city stamped the plans.
- Long-lead architectural glass: A custom shower panel or frameless enclosure ordered from a specialty fabricator can lag 8 to 10 weeks. On a fixed-price contract, we’ll tell you when the glass is ordered so you know the finish date is set by the vendor, not by our labor schedule.
- Dry rot from slab moisture: In a 1968 Seven Springs hall bath we gutted, decades of moisture wicking from the slab had rotted the subfloor around the toilet flange. If we had tiled over it, the floor would have flexed and cracked the grout inside a year. We cut out the rot, sistered the joists, and the inspector signed the rough-in before we closed the wall.
Pricing for Bathroom Remodeling in Cupertino, CA
| Project | Cupertino Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
Our written quote covers the labor, the materials, the permit fees we handle, and the warranty. If you want Cambria quartz on the shower bench, the price reflects Cambria. If you want a Kohler thermostatic valve, the price reflects Kohler. If you want the design tweaked after the quote, we re-price that item before we order anything. Call (669) 274-2362 for a free written estimate and we’ll walk your job with a clipboard and a plan.
We Also Serve Cities Near Cupertino
Penhallow Remodeling San Jose works throughout Cupertino and the surrounding communities, including Mountain View, Santa Clara, Los Altos, and Los Gatos. If you’re planning a bathroom remodel in one of those cities, the same written price and 365-Day Done Right Promise applies. Our crews dispatch from the San Francisco Bay Area office and schedule Cupertino jobs as local work, not out-of-area calls.
Serving Cupertino, CA - Our Local Coverage Area
We’re based in the Cupertino 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 About Bathroom Remodeling in Cupertino
Why does a Cupertino bathroom remodel often take longer than the same job in San Jose?
Cupertino’s custom-tier market drives longer lead times, especially on architectural glass, specialty valves, and custom cabinetry. A shower panel from a specialty fabricator can lag 8 to 10 weeks, and those orders often do not start until after the city approves the permit. The labor itself moves fast. The vendor calendar sets the pace, and we’ll lay that out in the written schedule before we order the first item.
Will moving a toilet or shower drain six feet trigger slab work in my Cupertino home?
Yes, in most pre-1980 Cupertino homes with slab-on-grade foundations, moving a drain line more than a few feet means cutting the concrete slab, rerouting the line, and pulling a supplemental permit. That can add $2,000 to $4,000 and a week to the job. We’ll tell you during the site visit whether the new location is worth the cut, and the written price will include it. Call (669) 274-2362 to schedule a site visit with our crew chief.
How do Cupertino’s setback rules and protected oaks affect a bathroom addition that extends outward?
If your bathroom project pushes an exterior wall, Cupertino’s lot-specific setbacks and protected oak ordinances can limit the footprint. The city reviews tree canopy impact and neighbor setback lines before issuing the permit, and a design that does not comply will not get approved until it shrinks. We’ll check the setback and oak map during our first site visit and tell you what will clear before you pay for plans.
What does a fixed-price bathroom remodel cover in Cupertino, and what could trigger a change order?
A fixed-price remodel covers the full written scope: labor, materials, permit fees, and the warranty, all locked before we order. The only things that trigger a change order are additions you request after signing or hidden conditions the quote could not have anticipated, like discovering a slab crack under the old tub. Even then, we show you the revised line item in writing before we do the extra work.
Why do you inspect the subfloor before quoting a Cupertino slab home bathroom remodel?
Slab moisture wicking can rot the subfloor around the toilet flange and shower curb without showing on the surface. If we skip that inspection and tile over compromised wood, the grout cracks and the floor flexes within a year. We pull the toilet and probe the subfloor during the estimate, so the written price reflects the actual job, not the job you hope you have.
Call Trevor Nash and the Penhallow Remodeling San Jose team at (669) 274-2362 for a free written estimate on your Cupertino bathroom remodel. A real person answers the phone, and the price we give you is the price on the invoice.
Written by Trevor Nash, Owner at Penhallow Remodeling San Jose, serving Cupertino and the surrounding Bay Area. The Kingswell Way has been our standard since 2004: say the price before the work, show up in the window we gave, and stand behind every job in writing.











