Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Sunnyvale
A full bathroom remodel in Sunnyvale typically costs $9,000 to $28,000, with small bathrooms starting near $5,000 and walk-in shower installations running $4,500 to $12,000. Permits are required for most work beyond a cosmetic refresh, and the mid-century housing stock here means original cast-iron drains and undersized vents often need correction once walls are open. Call (803) 680-2547 for a written price before any work starts.
We know Sunnyvale because we work here week in and week out. Our crews drive the same roads you do: El Camino Real past the old Town Center, Mathilda Avenue over the 101, Wolfe Road down toward Homestead High. When you call, a live person answers and schedules your free estimate. You’ll get a written line-item price before a single tool is unpacked.
Why Mason Remodeling Is Sunnyvale’s Preferred Bathroom Remodeling Company
Homeowners in Sunnyvale tend to ask the same three questions before they sign anything: who exactly is coming to my house, what’s this going to cost in writing, and what happens if something isn’t right afterward. Those are fair questions, and we answer all three the same way every time.
Every crew member is background-checked and identity-verified under The Threshold Standard. Before your project starts, you get the technician’s name and photo. At your door, they arrive in a clean marked uniform and show a photo ID badge. No guessing who’s walking into your bathroom.
Every project gets a written price before work begins. Not a verbal ballpark that grows later. Not an estimate with a dozen open allowances. A written scope and a written price, with allowances itemized so you can see exactly where your money goes. Our Bathroom Remodeling team has handled hundreds of mid-century Sunnyvale bathrooms, and the written price is the reason our customers tell us the project ended up costing what they were told it would cost.
After completion, every job carries the 365-Day Done Right Promise from Mason Remodeling. If the work is not right within a year of completion, we make it right at no cost to you. That’s written in your contract, not spoken in a sales pitch.
Styles & brands we work with
Bathroom Remodeling Contractor in Sunnyvale
A Bathroom Remodeling Contractor in Sunnyvale handles the full scope of a bathroom project: demolition, rough plumbing and electrical, waterproofing, tile, fixtures, glass, and finish trim, all coordinated under one permit and one responsible party. Most Sunnyvale homeowners call us when their original bathroom no longer functions the way their household does, whether that’s a tub they can’t safely step over, a vanity falling apart, or tile and grout that’s failed after decades. A full remodel here runs $9,000 to $28,000 depending on size, fixtures, and what’s behind the walls.
Full Bathroom Remodeling
This means taking the room to the studs and rebuilding it: new shower valve, new drain and venting as needed, new waterproofing, new tile, new vanity, new lighting, new exhaust. In Sunnyvale’s 1950s and 1960s homes, we routinely find galvanized supply lines and cast-iron drains that have served 60-plus years and are ready for replacement. We handle that in the same scope, not as a surprise add-on.
Small Bathroom Remodels
A half bath or compact hall bath in a Lakewood Village rancher or a Cherry Chase split-level usually runs $5,000 to $12,000. The scope is tighter: fixture replacement, new vanity, new flooring, fresh paint, maybe a new toilet and sink. But even small remodels in Sunnyvale can trigger permit requirements if you’re moving a drain or adding a circuit, and we scope that correctly from day one.
Walk In Shower in Sunnyvale
A Walk In Shower installation in Sunnyvale runs $4,500 to $12,000 and is one of the most common requests we get from homeowners aging in place or simply done with climbing over a tub rail. The work involves removing the existing tub or shower base, correcting the drain location if needed, installing a waterproof shower pan, and finishing with tile or a solid-surface surround and glass enclosure. For many Sunnyvale ranch homes built slab-on-grade, the drain relocation is straightforward, but it’s still a plumbing permit item, not a handyman job.
Walk-In Shower Installation
We set a new shower pan, water-proof the walls, install your valve and trim, and tile to your selections from Kohler, Moen, or Toto fixtures. The pan gets sloped correctly, the drain gets sized to current code, and the glass gets measured only after tile is set so the fit is exact. No gaps, no shortcuts, no callbacks.
Frameless Glass Shower Enclosures
After the shower is built, we measure and install the glass. Frameless enclosures are the standard in Sunnyvale remodels now: clean lines, no metal frame to corrode, easier to keep clean. Glass is templated after tile is complete, so lead time is built into the schedule, not a surprise at the end.
Tub-to-Shower Conversion
A tub-to-shower conversion runs $3,500 to $10,000 and is the fastest way to get a walk-in shower without relocating any walls. We pull the tub, adjust the drain, build a new shower pan, and finish with tile or a solid surround. In Sunnyvale’s post-and-beam homes, this conversion usually avoids structural work, which keeps cost and timeline sensible.
Trusted Brands We Service in Sunnyvale
We work with specification-grade material partners including Kohler and Moen for fixtures, Cambria and Silestone for solid surfaces, and KraftMaid and Wellborn for cabinetry. Because we coordinate material selections directly with suppliers, Sunnyvale customers don’t run around to three different showrooms and then hope the pieces arrive together. If you’re working around a specific vanity size or a shower valve location, we help you choose a fixture that fits the rough-in, not one that forces a re-pipe. We also respect what’s already in your home: if you’ve got a Dvele or Abodu accessory unit or a Cover-built addition, we’ll match the existing trim and hardware style so the new bathroom doesn’t look bolted on.
See the difference
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After
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After
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AfterCommon Bathroom Remodeling Problems We See in Sunnyvale Homes
- Original cast-iron drains and undersized venting. Because much of Sunnyvale’s housing dates to the 1950s and 1960s, the original 1.5-inch cast-iron vents and aging copper drains often fail when walls are opened. Current California Plumbing Code requires proper vent sizing, which means a re-pipe, not a patch.
- Permit scoping errors. A homeowner or contractor pulls a permit as a cosmetic “replace like-for-like,” but then the scope includes moving a drain or adding a shower valve. Sunnyvale’s adopted codes trigger electrical and plumbing permits for that work, and an incorrect permit means a re-submittal and delay.
- Change-order creep from vague bids. A low bid that omits allowances for tile, fixtures, and glass looks great until selections land and the change order arrives. The original scope never defined what was included, so the final price balloons.
- Skipped rough-in inspections. When a contractor closes walls before the rough-in inspection, any future leak or drain issue behind the wet wall becomes a full demo instead of a targeted repair. We never close a wall until the inspector has signed off.
Pricing for Bathroom Remodeling in Sunnyvale, CA
Here’s what you can expect in Sunnyvale’s current market. These ranges reflect our written estimates for mid-century homes, not national averages.
| Project | Typical Sunnyvale Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What moves the price? Square footage matters less than what’s behind the walls. If your drain needs re-piping or your vent needs upsizing, that’s labor and material. If you’re moving fixtures rather than replacing in place, that’s plumbing work and permit scope. If you choose a solid-surface surround instead of tile, that changes material cost. You’ll see every one of those line items in your written estimate. Call (803) 680-2547 for a free estimate and a written price before work starts.
We Also Serve Cities Near Sunnyvale
Mason Remodeling serves Bathroom Remodeling in Sunnyvale and the surrounding communities, including Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re just over the Sunnyvale line, call us; we schedule projects across the South Bay every week and will give you the same written price and the same crew verification.
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
Yes, for most work beyond a direct fixture or finish replacement. Relocating a drain, adding a shower valve, moving a vanity circuit, or changing a wall triggers electrical and plumbing permits under Sunnyvale’s adopted codes. We pull permits as part of the project, and our written price includes the permit fees. A cosmetic replace-like-for-like, like swapping a vanity in the same footprint without touching plumbing or electrical, usually doesn’t need one. Call (803) 680-2547 and we’ll tell you honestly which applies to your project.
The most common surprise is original cast-iron drains and 1.5-inch venting that no longer meet California Plumbing Code. In the Lakewood Village neighborhood, our crew opened the walls of a 1960s hall bath and found the original 1.5-inch cast-iron vent and a copper drain line pitted at the trap. We re-piped the drain and vent to modern code and set a new subfloor before roughing in a Kohler shower valve, then passed inspection sign-off on the first visit. Other common finds include galvanized supply lines, dry-rotted subfloor around old tubs, and wiring that predates GFCI requirements. We handle these as part of the project scope, not as add-ons.
A full bathroom remodel in Sunnyvale runs $9,000 to $28,000. A small bathroom runs $5,000 to $12,000. A walk-in shower installation runs $4,500 to $12,000. Those are written ranges from our estimates for local homes, not national averages. What changes the number is what’s behind the walls, whether you’re moving fixtures, and what materials you select. Call (803) 680-2547 for an exact written quote. Estimates are free.
A change order is a written document that changes the scope or price after the contract is signed. You should never get a change order for work that was already in the original scope; that means the original scope was vague. Legitimate change orders happen when you choose to add something after work begins, like moving a wall or upgrading a fixture mid-project. Our original written price includes itemized allowances for tile, fixtures, and glass, so change orders on our Sunnyvale jobs are rare and always in writing before the work proceeds.
A full bathroom remodel in Sunnyvale typically takes three to six weeks depending on scope and inspections. A small bathroom or tub-to-shower conversion can be done in two to three weeks. Our draw schedule is tied to milestones, not dates: an initial deposit, a draw at rough-in inspection, and a final draw at completion. If you have questions about a specific timeline for your Sunnyvale home, call (803) 680-2547 and we’ll talk through it honestly.
Ready to price your Sunnyvale bathroom remodel? Call (803) 680-2547 today for a free estimate and a written price before any work starts. Every crew member is background-checked and identity-verified under The Threshold Standard, and every completed project carries the 365-Day Done Right Promise.
Written by Isaac Pruett, Owner at Mason Remodeling.
