Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Mill Valley
A full bathroom remodel in Mill Valley typically runs between $9,000 and $28,000, depending on scope, and most projects take three to six weeks from demo to final walkthrough. We’re Barrett & Sons Construction, and we’ve been remodeling hillside bathrooms here long enough to know that every home in the 94941 and 94942 zip codes comes with its own set of surprises. If you live in Tamalpais Valley, Sycamore Park, or up on the slopes above Miller Avenue, you already know what those surprises look like. Call us at (877) 610-1318 and we’ll give you a straight answer on what yours will cost.
Why Barrett & Sons Construction Is Mill Valley’s Preferred Bathroom Remodeling Company
Our reputation in Mill Valley is built on something pretty simple: Tom Barrett shows up, his sons run the crews, and the price we quote is the price you pay. That matters in a town where half the homes sit on hillsides and the other half sit on raised post-and-pier foundations that make even a simple shower pan replacement a job worth doing carefully. Reviews from Mill Valley customers consistently point to the same thing, which is that we answer the phone, we show up when we say we will, and we don’t hand over a surprise invoice at the end.
We’re based out of our San Francisco Bay Area office, so getting a crew to Mill Valley doesn’t mean waiting for a company from Sacramento or the East Bay to fit us into a rotation. When you call (877) 610-1318, you get a live person, and when we schedule an estimate, Tom’s sons or a crew member who carries the Barrett name is the one who walks your job. We know the roads, we know the inspectors, and we know that a bathroom on a north-facing Mill Valley hillside has different moisture problems than one in downtown Corte Madera.
Every bathroom remodel we do in Mill Valley includes permits pulled and inspections signed, written change orders before any scope change touches the job, and a 90-Day Done Right Promise written on the contract. Tom publishes his name, his address, and his license number. Ask anyone on your street, or look it up yourself.
Our Bathroom Remodeling Services in Mill Valley
Here’s what we handle most often for Mill Valley homeowners. If your project fits one of these, you’re in good company. If it doesn’t, call us anyway and we’ll tell you honestly whether we’re the right crew for it.
Full Bathroom Remodeling
A full bathroom remodel in Mill Valley means something different depending on whether your house is a 1920s wood-frame cottage near the Depot or a mid-century home cantilevered over a canyon off Throckmorton. We handle everything from gutting the room to the studs, repairing water-damaged subfloor, moving plumbing where it makes sense, and rebuilding with materials that can handle the damp coastal air. In Mill Valley, full remodels on a primary bath run $12,000 to $28,000, and we’ll give you a written line-item quote before we touch a hammer.

Walk-In Showers & Shower Remodeling
Walk-in showers are the most requested upgrade we see in Mill Valley, especially for the older homes where a cramped tub-shower combo is eating up a third of the room. We tear out the old unit, address any rot or moisture damage behind the walls, and rebuild with a curbless pan, proper waterproofing, and fixtures you can actually reach. For Mill Valley bathrooms, we always check the ventilation situation, because a fog-shrouded hillside home without an adequate exhaust fan will turn a new shower into a mold farm within a year. A walk-in shower installation here runs $4,500 to $12,000.

Tub-to-Shower Conversion
If you’re aging in place in Mill Valley or just tired of stepping over a bathtub wall, a tub-to-shower conversion is one of the smartest moves you can make. It’s also one of the most popular projects for homeowners in Tamalpais-Homestead Valley and the neighborhoods along East Blithedale. We handle the demolition, haul-away, re-routing the drain, and waterproofing the entire alcove, not just the seams. A tub-to-shower conversion in Mill Valley typically runs $3,500 to $10,000, depending on whether we’re moving plumbing or keeping the existing drain location. Call (877) 610-1318 and we’ll give you a real number.

Vanities, Tile & Fixtures
You don’t always need a full gut to change the way your bathroom works. We replace vanities, install new tile, swap out fixtures, and upgrade lighting for Mill Valley homeowners who want a refresh without a six-week construction window. We stock and install premium-brand materials, including Cambria for countertops and well-known tile lines, so you know exactly what you’re getting. Vanity installation runs $800 to $3,000, and fixture replacement is often a same-day job.
For a complete look at what we offer, see our Bathroom Remodeling service hub. We also handle Roofing in Mill Valley and Windows & Doors in Mill Valley, which matters because a bathroom remodel in an older Mill Valley home often reveals problems that connect to both. If your bathroom has a leak, the rot may have already spread to the wall framing and the window above it. We’d rather catch that now than have you discover it next winter.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Mill Valley
You shouldn’t have to wonder whether the shower valve or the window in your new bathroom came off a clearance rack. We install brands you can look up, including Simonton and PGT windows when a bathroom window needs replacing, and we source faucets, shower systems, and tile from manufacturers that stand behind their product lines. Because Mill Valley is our local service area, we keep common replacement parts and materials accessible, which means a warranty issue doesn’t turn into a two-week wait for a part to ship from somewhere else. If we’re replacing a window in your shower surround or dealing with a moisture problem around existing glazing, we’ll talk you through the options honestly. Andersen and Marvin are the names you’ll hear us recommend most often for coastal, fog-heavy exposure, because we’ve seen what happens to cheaper frames in Mill Valley’s damp canyons.
Common Bathroom Remodeling Problems We See in Mill Valley Homes
- Chronic moisture and rot in crawl spaces and subfloors. The dense redwood and bay laurel canopy traps coastal fog off San Francisco Bay, and north-facing hillside homes stay damp for weeks at a time. We regularly open up a bathroom floor and find rotted joists and fungal damage that a moisture meter could have caught years earlier.
- Undersized exhaust fans and poor ventilation. In Mill Valley’s cool, foggy climate, a bathroom without a proper exhaust fan will grow mildew on the new grout within months. We always check the existing venting and recommend an upgrade if the fan can’t move enough air for the room’s square footage.
- Hillside access constraints that add cost to material delivery. Many Mill Valley homes sit at the end of roads too narrow or steep for a standard flatbed delivery truck to navigate safely. We routinely plan for smaller vehicles, off-site staging, and occasionally a crane pick to get a new bathtub or shower pan up the hill. Out-of-area crews underbid this and then absorb it, which usually means they cut corners somewhere else.
- Aging plumbing and galvanized supply lines. The early 1900s cottages near the Depot and in Tamalpais Valley often still have original galvanized pipes that have corroded from decades of wet coastal air. If we’re opening walls anyway, we’ll give you a straight answer on whether repiping now saves you from tearing into a new shower two years from now.
Pricing for Bathroom Remodeling in Mill Valley, CA
Here’s what you can expect to pay for bathroom work in Mill Valley. A small bathroom remodel runs $5,000 to $12,000. A full primary bathroom remodel runs $9,000 to $28,000. Walk-in shower installation runs $4,500 to $12,000, a tub-to-shower conversion runs $3,500 to $10,000, and vanity installation runs $800 to $3,000. What moves the number? The size of the room, whether you’re moving plumbing, what’s behind the walls once we demo, and what grade of tile and fixtures you choose.
| Service | Mill Valley Price Range |
|---|---|
| Small Bathroom Remodel | $5,000 - $12,000 |
| Full Bathroom Remodel | $9,000 - $28,000 |
| 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 |
We offer free estimates in Mill Valley, and we offer a free second opinion on any written estimate you already have. We also honor a no-trip-charge policy inside the county and a permanent 10% senior and veteran discount. Call (877) 610-1318 and we’ll give you a written, line-item quote you can actually compare.
We Also Serve Cities Near Mill Valley
In addition to Mill Valley proper, we serve homes in Mill Valley and the surrounding communities, including Tamalpais Valley, Tamalpais-Homestead Valley, Corte Madera, and Larkspur. If you’re anywhere along the 101 corridor between the Golden Gate Bridge and Greenbrae, we’re close enough to give you a straight answer in person. Call (877) 610-1318 and tell us where you are.
Serving Mill Valley, CA - Our Local Coverage Area
We’re based in the Mill Valley area and know this community well, and we also offer Fence Installation - Mill Valley. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Bathroom Remodeling in Mill Valley
We can typically visit your Mill Valley home for an estimate within a few days of your call, and we’ll give you a written line-item quote on the spot or within 24 hours. Call (877) 610-1318 to schedule a free estimate. We answer the phone live, 24 hours a day, seven days a week.
Yes, we work throughout Mill Valley, including Tamalpais Valley, Sycamore Park, Blithedale Canyon, the Depot area, and the hillside homes above Miller Avenue, plus the 94941 and 94942 zip codes. For homes with limited access or steep driveways, we plan logistics ahead of time so the delivery of tile, vanities, and shower pans doesn’t become your problem - and if you need our Driveway & Pavers in Mill Valley, we handle those projects too.
We don’t call ourselves emergency plumbers, but if you have a leaking shower pan, a cracked toilet, or water coming through the bathroom floor, call us at (877) 610-1318 and we’ll help you stop the damage and schedule the repair. For active water intrusion, shut off the water supply first and get a bucket under the leak. We’ll walk you through what we can do from there.
Mill Valley bathroom remodel pricing runs slightly above the Marin County average because of hillside access, older housing stock, and the moisture problems that come with the fog and tree canopy. A full bathroom remodel in Mill Valley runs $9,000 to $28,000, compared to slightly lower ranges in flatter, drier areas of the county. The money goes toward proper waterproofing, ventilation, and foundation and subfloor repair, not decorative upgrades. Call (877) 610-1318 for an exact quote, because free estimates are how we do business here.
Every bathroom remodel we complete in Mill Valley includes our written 90-Day Done Right Promise. If something isn’t done right, Tom Barrett comes back and makes it right, one call. Materials carry their manufacturer warranties, and we handle the workmanship side in writing. If a problem shows up after the job is closed out, call us and we’ll schedule a return visit.
Ready to Plan Your Mill Valley Bathroom Remodel?
We’re Barrett & Sons Construction, founded in 1998 and owner-operated by Tom Barrett. Our crews work throughout Mill Valley, and Tom’s sons run the jobs. Every scope, every allowance, and every price change comes to you in writing before work proceeds. The permit inspector works for you, not for us, and that’s exactly how we like it. Call (877) 610-1318 today to schedule your free estimate for bathroom remodeling in Mill Valley. We’ll give you a real number, a real timeline, and a straight answer.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Mill Valley and the surrounding Bay Area communities.







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