







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Martinez
A full bathroom remodel in Martinez typically runs $9,000 – $28,000, with smaller projects like a shower replacement landing between $3,000 and $8,500. The job usually takes two to four weeks depending on whether you’re replacing a tub, moving plumbing, or gutting to the studs. We know Martinez homes well: the 1920s bungalows near downtown, the 1950s ranches off Center Avenue, the newer builds up toward Hidden Lakes. Call (803) 680-2547 to talk through your scope and get a written line-item price before any work starts. That’s how we’ve run every Martinez project since 2004.
Why Mason Remodeling Is Martinez’s Preferred Bathroom Remodeling Company

When you hire us, you know exactly who is walking through your door. Every crew member is background-checked, identity-verified, and uniformed. You get their name and photo before the visit, and they’ll show a photo ID badge when they arrive. We call that process the Threshold Standard, and it matters whether you’re a parent home with young kids or an older adult in a house you’ve lived in for decades.
What sets us apart in Martinez is the written price. Before a single tool is unpacked, you’ll have a complete scope of work with allowances for materials, a calendar for each phase, and a final figure. No verbal estimate that grows on the final bill. No surprise change orders. Our Bathroom Remodeling team treats the price as a commitment, not a guess.
We also stand behind the work. Our 365-Day Done Right Promise means if something isn’t right within a year of completion, we make it right at no cost to you. That’s been our standard since 2004, as part of the Threshold Group family of home-service companies. Isaac Pruett, who leads Mason Remodeling, holds every Martinez project to that bar.
Styles & brands we work with







Shower Remodel in Martinez
A shower remodel in Martinez usually means one of three things: replacing a failing pan, updating a tired surround, or gutting an alcove and rebuilding it with modern waterproofing. In Martinez’s older homes, we often find original mud-set pans that have been leaking into the subfloor for years. Homeowners don’t see the damage until we pull the tile, which is why getting a written scope before demolition matters.
Shower replacement in Martinez runs $3,000 – $8,500 depending on size and finish level. A full walk-in shower installation with a new pan, valve, surround, and frameless glass runs $4,500 – $12,000.
We’ve done this work in homes off Alhambra Avenue, near Hidden Valley Elementary, and throughout the neighborhoods along Highway 4. Each project gets the same treatment: a written price first. No exceptions.
Walk-In Showers and Frameless Glass
Walk-in showers are the most common request we hear from Martinez homeowners looking to age in place or just lose the tub. A curbless entry means no step over the threshold, which matters if mobility is a concern. Frameless glass enclosures add cost but open up a small bathroom visually, and in Martinez’s older bathrooms where square footage is tight, that visual space is worth it.
Shower Valve and Waterproofing
We use Kohler and Moen valves as standard, and we install Schluter waterproofing membrane behind the tile. That’s the orange fabric that seals the entire shower before tile goes up. It’s not the cheapest way to build, but it’s the way that doesn’t fail in five years. Tile over green board is the old shortcut, and we won’t do it.
Tub to Shower Conversion in Martinez

A tub to shower conversion in Martinez typically costs $3,500 – $10,000 and takes one to two weeks. It’s the right call when a tub isn’t being used, or when stepping over the tub wall has become a safety issue. We replace the tub with a shower pan, rebuild the surround, move the valve to shower height, and often widen the opening.
In Martinez homes built before 1960, the subfloor under the tub is frequently compromised. Decades of slow leaks from worn-out tub surrounds rot the plywood. We’ll check the framing and subfloor before we set the new pan, and if repair is needed, you’ll see it as a line item before we proceed. No surprises discovered at final invoice.
Cast-Iron Pan and Moen Valve
We recently completed a tub-to-shower conversion on a 1940s bungalow off Alhambra Avenue near downtown Martinez. The homeowner wanted a Kohler cast-iron base and a Moen valve. Once we opened the walls, the original galvanized supply lines were corroded and the subfloor had soft spots. We added a change order to bring the rough-in up to code before setting the new pan, and the inspection passed on the first try.
Permit and Rough-In Reality
Here’s what most Martinez homeowners don’t expect: the plumbing rough-in inspection happens before the tile goes up, and in older homes, that’s where problems surface. Galvanized pipes that have constricted to half their original diameter don’t pass current code. The fix is repiping the branch line, which is a day of work and a line item on the estimate. When we write the initial scope, we’ll flag this as a likely cost. You’ll know what the worst case costs before we start.
Trusted Brands We Service in Martinez
We build with specification-grade materials because cheap fixtures fail faster. For cabinetry, we source KraftMaid and Wellborn. For surfaces, Cambria, Silestone, and Caesarstone. Fixtures come from Kohler, Moen, Toto, and Grohe. We don’t install builder-grade hardware, and we don’t push showroom brands that underperform. Since our San Francisco Bay Area office coordinates dispatch and our crews serve Martinez locally, we can get most ordered components in a few days. You’ll see every brand and model in writing on your estimate.
See the difference
Before
After
Before
After
Before
AfterCommon Bathroom Remodeling Problems We See in Martinez Homes
- Skipping the permit on a “cosmetic” swap. Homeowners think swapping a tub for a shower is surface work, so they skip permitting. Then the rough-in inspection reveals galvanized supply lines that fail code, and the finished shower has to be torn out to fix it. We pull permits on every Martinez project. Inspection sign-off is part of the job, not an add-on.
- Rotted subfloor around the tub. Homes in Martinez built in the 1930s through 1950s have had plumbing leaks for decades. The plywood under the tub is often soft by the time we get there. We include a subfloor inspection allowance in our written quote, and if we find rot, you’ll see the repair cost before we cut anything.
- Undersized framing behind the walls. Original 1920s framing doesn’t always align with modern plumbing rough-in dimensions. A shower valve needs backing, a grab bar needs solid blocking. In older Martinez homes, we routinely add blocking and sistered studs to get a clean inspection.
- Budget sprawl from mid-project upgrades. A homeowner starts with a KraftMaid vanity, then decides mid-job they want Wellborn cabinets. Without a written allowance process, that’s a budget blowout. Our written scope includes material allowances and a change order process, so you approve any upgrade before it ships.
Pricing for Bathroom Remodeling in Martinez, CA
Here’s the honest local picture. You can’t get a serious, permitted, waterproofed bathroom remodel in Martinez for $4,000. That price buys you a surface swap that will fail. A real remodel starts around $9,000 and goes up from there.
| Service | Martinez 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 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
Cost drivers in Martinez: remodel size, whether you move plumbing, finish level of tile and fixtures, and subfloor or framing repair in older homes. We give you a written line-item quote with allowances, so you’ll know exactly what moves the number before we start. Call (803) 680-2547 for a free estimate.
We Also Serve Cities Near Martinez
Our crews cover Martinez and the surrounding communities. We’re regularly in Pleasant Hill, Benicia, Lafayette, and Concord for bathroom remodels, shower conversions, and full-home work. If you’re nearby, the same written price and 365-Day Done Right Promise apply. Call us and we’ll confirm availability for your project.
Serving Martinez, CA - Our Local Coverage Area
We’re based in the Martinez 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 Martinez
Yes, if you’re moving plumbing, changing the shower valve, replacing the pan, or altering the framing. Martinez’s building department requires a plumbing rough-in inspection before walls are closed, and we handle that process for you. A permit protects you when you sell the home, and it means the work was inspected by the city. Call (803) 680-2547 and we’ll confirm what your specific project requires.
A full bathroom remodel in Martinez runs $9,000 – $28,000, with small bathrooms at $5,000 – $12,000 and tub-to-shower conversions at $3,500 – $10,000. The range accounts for home age, square footage, finish level, and whether we’re repairing subfloor or replacing galvanized supply lines. For an exact quote, call (803) 680-2547. Estimates are free and written, not verbal.
Corroded galvanized plumbing and rotted subfloor around the tub, especially in homes built before 1960. You won’t see it until we open the walls. That’s why our written quote includes a rough-in and subfloor allowance, so you’ll know what the worst case costs before we start cutting. Call (803) 680-2547 to schedule a walkthrough.
Small bathroom remodels take one to two weeks. Full gut remodels with tile, glass, and custom cabinetry take two to four weeks. Older Martinez homes with surprise subfloor or rough-in repairs can run longer, and we’ll put the calendar in your written scope. Call (803) 680-2547 for a realistic timeline for your project.
Yes. Every Mason Remodeling project gets a written price with a line-item scope and material allowances before any work begins. That’s standard for every job in Martinez, not an upgrade. You approve any changes in writing before they’re made. Call (803) 680-2547 to get started.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Martinez since 2004.










