Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Sunnyvale
Bathroom remodeling in Sunnyvale typically runs $9,000 – $28,000 for a full gut-and-rebuild, with small bathroom remodels landing between $5,000 and $12,000. Most of the ranches we work in were built between 1950 and 1970, and their bathrooms carry the same tired layout: a cramped tub-shower combo, a vanity that’s seen better decades, and floors that settled with the foundation. We work those jobs every week, from the Birdland streets to the pockets around Washington Park. Call (936) 259-2607 to schedule a free estimate, and we’ll give you a written price before anything gets pulled.
One thing Sunnyvale homeowners run into that folks in Mountain View or Cupertino rarely deal with: Superfund plume zones. This city sits on some of the most concentrated EPA Superfund sites per square mile in the country, a leftover from decades of semiconductor solvent use. When we open a bathroom subfloor for a walk-in shower on a 1958 ranch off E Fremont Ave in Birdland, we’re not surprised if soil screening flags something. We handle it, coordinate with DTSC, and install a vapor intrusion barrier under the slab before rough-in. That’s local knowledge you don’t get from a phone-photo quote.
Why Penhallow Remodeling Is Sunnyvale’s Preferred Bathroom Remodeling Company
Sunnyvale homeowners have been burned before. A verbal estimate that balloons after demo day. A contractor who doesn’t answer for two weeks. A shower pan that leaks six months later and nobody returns the call. We built Penhallow Remodeling around a different standard, and we put it in writing on every Sunnyvale job we start.
Trevor Nash leads our team, and the rule Trevor enforces is simple: say the price before the work. Show up in the window we gave. Leave the place cleaner than we found it. That’s The Kingswell Way, the operating standard we’ve held since 2004. Every Bathroom Remodeling project gets a written number before the first cabinet is pulled, and the 365-Day Done Right Promise means if something fails inside that year, we come back and fix it at no charge. Not a pro-rated credit. Not a re-inspection fee. We make it right.
When you call, a live person answers, 24/7. Not a voicemail maze. The technicians who arrive at your Sunnyvale door are background-checked and in uniform, so you know exactly who’s walking in. And the materials behind the guarantee are recognized trade brands: KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, Kohler and Moen fixtures. You’re not buying a promise from a stranger. You’re buying a written agreement with a local crew that has done this exact job on Sunnyvale ranches before.
Small Bathroom Remodel in Sunnyvale
A Small Bathroom Remodel in Sunnyvale usually means a 5×8 or 5×9 hall bath or a compact master bath in a 1950s-1960s ranch, and it typically runs $5,000 – $12,000. The scope usually keeps the existing footprint, but replaces the vanity, toilet, flooring, lighting, and either a tub-shower combo or a shower. Some homeowners go further and convert the tub to a walk-in shower, which lands in the $3,500 – $10,000 range on this size of space. The big cost drivers in Sunnyvale specifically are foundation condition and whether the subfloor sits over a vapor intrusion zone. We check both before we quote.
The footprint stays, the feel changes
Most Sunnyvale small bathrooms don’t have room to move walls. What they do have is bad storage, a shower valve from the Reagan administration, and tile that’s tired enough to hurt resale. We work the existing footprint hard: a KraftMaid vanity with soft-close drawers, a Kohler valve, better lighting, and a clean glass shower door changes how the room reads. No square footage added, no permits for moving walls, but the bathroom stops being the room you apologize for.
Why the price can move
If the subfloor shows rot or the cripple wall underneath fails current CBC seismic standards, the scope grows. We don’t hide that in a change order. We pull the toilet and inspect before quoting, so the written price covers what the job actually is. In Sunnyvale, that inspection matters more than most places.
Shower Remodel in Sunnyvale
A Shower Remodel in Sunnyvale, whether it’s a walk-in shower conversion or a full shower replacement, typically runs $3,000 – $12,000 depending on size, waterproofing method, glass, and what’s hiding under the old pan. The most common request we get on Bathroom Remodeling in Sunnyvale jobs is ripping out a tired tub-shower combo and putting in a zero-threshold walk-in. That’s a genuine quality-of-life upgrade for homeowners staying in these ranches for decades.
Tub-to-shower conversions
Converting a tub to a shower in a Sunnyvale ranch usually comes in between $3,500 and $10,000. You gain floor space visually, you eliminate the tub wall that makes the room feel closed, and you get a shower pan done right with proper waterproofing. We don’t skip the shower-pan prep. A shower pan that fails inspection sign-off in Sunnyvale means tearing out tile to pass. We’d rather spend the extra hours getting it right before the tile goes up.
Walk-in showers and glass enclosures
A walk-in shower installation runs $4,500 – $12,000, and frameless glass enclosures push the upper end. In a small ranches bathroom, we size the glass so the door swing doesn’t fight the vanity. Every enclosure gets a solid curb or a true zero-threshold entry with proper slope, so water stays where water belongs.
Trusted Brands We Service in Sunnyvale
We install materials we’d put in our own homes, and in Sunnyvale that means brands engineered to handle a seismic zone and a home that shifts. We regularly spec KraftMaid and Wellborn cabinetry, Cambria quartz, Kohler and Moen fixtures, and when a slab or subfloor patch needs a durable repair material, we use Sakrete products, which our crews know well and keep stocked locally. We carry common parts for Sunnyvale jobs in our Bay Area inventory, which means a vanity swap or a valve replacement doesn’t wait on a slow freight delivery. If a fixture fails inside the guarantee, the replacement part comes from our stock, not a six-week backorder.
Common Bathroom Remodeling Problems We See in Sunnyvale Homes
- Raised and cripple-wall foundations that fail current CBC seismic standards. Open a subfloor for a shower pan on a 1958 ranch, and you may find the cripple wall needs hold-downs and a shear-wall segment before the rough-in passes. A contractor who quoted off a phone photo won’t see that coming, and it turns into a change order after demo.
- Chlorinated solvent plume zones under the slab. Sunnyvale has one of the highest concentrations of EPA Superfund sites per square mile in the U.S. If a soil sample flags during excavation, work pauses for screening and DTSC coordination. We’ve done that dance before and we schedule for it, so the job doesn’t stall mid-rough-in.
- Waterproofing that got skipped or under-scoped. A shower that fails inspection sign-off in Sunnyvale means tearing out tile to pass. We scope full shower-pan prep and waterproofing up front, in writing, because redoing tile costs more than doing the waterproofing right the first time.
- Settled floors and out-of-level subfloors. Sixty years of minor foundation movement shows up as a floor that slopes a half-inch across the bathroom. We level before we set tile, and we tell you what that costs in the written quote, not after the demo.
Pricing for Bathroom Remodeling in Sunnyvale, CA
Here’s what we actually quote on Sunnyvale jobs, not a vague “prices vary”:
| Bathroom Remodeling Service | Typical Sunnyvale Price Range |
|---|---|
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Full Bathroom Remodel | $9,000 – $28,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What pushes a Sunnyvale bathroom remodel toward the upper end: a vapor intrusion barrier under the slab, shear-wall or hold-down retrofits on a raised foundation, custom glass, and moving plumbing. What keeps it low: keeping the footprint, using a standard vanity line, and a tub-to-shower conversion instead of a full gut. Every quote is line-item and written, so you see exactly what each piece costs. Call (936) 259-2607 for a free estimate with no obligation and no surprises on demo day.
We Also Serve Cities Near Sunnyvale
Our crews take on bathroom remodels in Mountain View, Santa Clara, Cupertino, and Los Altos too, where we see a lot of the same 1950s ranch stock less frequently tied to Superfund plume zones. If you’re just over the Sunnyvale line, call us and we’ll tell you straight whether your job is in our service area.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
Because Sunnyvale has one of the highest concentrations of EPA Superfund sites per square mile in the country. If excavation hits a chlorinated solvent plume zone, the job needs soil screening, DTSC coordination, and a vapor intrusion barrier before rough-in, none of which a Mountain View bathroom typically requires. Add a raised or cripple-wall foundation that fails current CBC seismic standards, and the scope grows. Call (936) 259-2607 and we’ll explain exactly which line items apply to your address.
Yes, for any work that changes plumbing, electrical, or structural elements, which covers nearly every bathroom remodel that goes beyond swapping a vanity and a toilet. We pull the permits, coordinate inspections, and close them out. The written quote includes permit fees, so the number you see on day one is the number on the invoice.
A written line-item price, the permit plan, the waterproofing method, the fixture list, and the schedule. We also spell out what happens if soil screening flags a plume zone or the foundation needs shear-wall retrofits, because in Sunnyvale those are real possibilities, not hypotheticals. Every Penhallow job starts with that written number and the 365-Day Done Right Promise in writing. Call (936) 259-2607 for a free estimate.
Yes, in most 5×8 or 5×9 bathrooms a walk-in shower fits by removing the tub and using a narrow-profile glass panel instead of a swinging door. We’ve done this on dozens of Sunnyvale ranches, including a 1958 home off E Fremont Ave in Birdland where we converted a tub to a zero-threshold shower, added a vapor barrier under the slab, and finished with a KraftMaid vanity and Kohler valve. Call (936) 259-2607 for a free estimate.
If you’re planning an ADU, yes. Sunnyvale’s Building Division runs a pre-approved ADU standard plan program that can cut permit turnaround to weeks instead of months. We design the main bathroom remodel around the same timeline so one inspection cycle covers both scopes, and the written price stays accurate across the whole job. Call (936) 259-2607 and we’ll walk you through what that looks like on your lot.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving Sunnyvale and the surrounding Bay Area.







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