Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Sonoma
Bathroom remodeling in Sonoma typically costs between $9,000 and $28,000 for a full renovation, with small bathrooms running $5,000 to $12,000 and walk-in shower installations landing between $4,500 and $12,000. Those are real numbers, written down before any demo starts, not ballpark guesses that shift once the tile comes up. If you live near the Plaza, in Boyes Hot Springs, or up in the hills off Arnold Drive, you already know that remodeling an older Sonoma home means dealing with things other contractors don’t mention until it’s too late: historic review, clay soils, fire-hardening requirements, and lead times on custom materials that run longer than the actual construction. Penhallow Remodeling has been navigating those realities on Sonoma bathrooms long enough to know the difference between a two-week delay and a two-month one. Call (936) 259-2607 and you’ll get a live person, a straight answer, and a written price before we order a single fixture.
Why Penhallow Remodeling Is Sonoma’s Preferred Bathroom Remodeling Company
Sonoma homeowners tend to interview contractors carefully, and for good reason. A lot of people here have been through a remodel that dragged on twice as long as promised, or watched a tile floor crack six months after the final check cleared. Trevor Nash built Penhallow Remodeling for exactly that homeowner. We operate under The Kingswell Way, which has meant the same thing since 2004: say the price before the work, show up in the window we gave, leave the place cleaner than we found it. Every Bathroom Remodeling project in Sonoma gets a written price before any work starts, a defined arrival window, and a 365-Day Done Right Promise in writing. If something fails inside that year, we come back and fix it at no charge. No service call, no re-inspection fee, no back-and-forth.
We also understand that a bathroom near the Plaza isn’t the same job as a bathroom in a mid-century ranch off Fifth Street West. The first may need historic preservation review before you can change a visible window. The second may be sitting on expansive clay that has quietly shifted the slab since the 1970s. Our background-checked, uniformed technicians have seen both. And when you call, a real person answers 24/7 – not an answering service, not a voicemail tree. Ask for Trevor. You’ll get him.
Small Bathroom Remodel in Sonoma
A Small Bathroom Remodel in Sonoma usually means working inside a footprint that was never generous to begin with – think the guest bath in a 1950s ranch on the flatlands, or the downstairs powder room in a Victorian near the Plaza. The job typically involves replacing the vanity, toilet, and flooring, updating fixtures, and sometimes reconfiguring the layout enough to steal a few inches of storage. In Sonoma, these projects run $5,000 to $12,000 depending on whether you’re keeping the existing rough-in locations or moving plumbing, which gets into slab work and soil considerations fast.
What Drives the Price Up or Down
The single biggest variable in a small Sonoma bathroom is whether supply and drain lines stay where they are. Moving a toilet even a few feet on a slab-on-grade home means cutting concrete, and in lower-lying parts of the valley the clay-heavy soil underneath expands and contracts with winter rain. We account for that before we quote, not after. The second variable is finish level: a stock vanity from a big-box store lands at the low end of the range, while a KraftMaid or Wellborn vanity with a Cambria quartz top pushes toward the higher end.
When It Makes Sense
You should consider a small bathroom remodel when the fixtures work but the room doesn’t – bad lighting, failing grout, a vanity that’s falling apart, or a floor that’s starting to crack along a hidden slab seam. Sonoma homeowners often do these before putting a house on the market, since a dated guest bath is one of the first things buyers flag. But plenty of our clients renovate for themselves first. The return is in daily use, not just resale.
Shower Remodel in Sonoma
A Shower Remodel in Sonoma frequently starts as a tub-to-shower conversion or a replacement of a failing prefab shower pan in a home built between the 1960s and the 1990s. The work spans from a straightforward pan and surround replacement to a full walk-in shower with frameless glass, custom tile, and a bench. Depending on scope, Sonoma shower remodels run $3,000 to $8,500 for a basic replacement and $4,500 to $12,000 for a complete walk-in installation with custom finishes.
Walk-In Showers and Frameless Glass
Walk-in showers dominate Sonoma’s higher-end remodels, and for good reason. They open up a small bathroom visually and work well with the Spanish Colonial and modern farmhouse aesthetics common across the valley. We install frameless glass shower enclosures sourced from trade suppliers, with hardware that holds up to the hard water coming off Sonoma’s municipal supply. If your home is on a well, we’ll account for additional mineral buildup when we spec the glass and finish.
Tub-to-Shower Conversions
Converting a tub to a shower is one of the most common requests we get from aging-in-place clients in Sonoma’s hillside homes, where a low-profile shower pan and a bench make a real difference. The conversion runs $3,500 to $10,000. The critical detail on a slab home is drainage: a standard tub drain is 1.5 inches, but a shower needs 2 inches, which often means opening the slab. We’ll tell you that before you sign, not after demo starts.
Trusted Brands We Service in Sonoma
Penhallow Remodeling installs cabinetry from KraftMaid and Wellborn, countertops from Cambria, Silestone, and Caesarstone, and fixtures from Kohler, Moen, and Delta. These aren’t generic off-brand products we swap in to hit a price point – they’re what we spec because they hold up, and because most carry manufacturer warranties that layer on top of our own 365-Day Done Right Promise. For Sonoma customers who want something more architectural, we also coordinate with the same design and prefab channels used by firms like Abodu, Cover, and Dvele when a project calls for it. We don’t stock every line item locally – nobody does – but we order early, track lead times weekly, and build the wait into the written schedule so you’re not finding out about a ten-week cabinet delay three days before install.
Common Bathroom Remodeling Problems We See in Sonoma Homes
- Slab movement and cracked tile over expansive clay: The valley floor’s clay-heavy soils move with winter rains, and homes built before modern soil engineering often show it in the bathroom first. Tiling directly over a moving slab without crack-isolation membrane is a recipe for cracked grout and a failed shower pan within a few seasons.
- Historic review delays near the Plaza: If your home falls under Sonoma’s historic preservation overlay, visible changes like window profile alterations, exterior vent placement, or even certain interior trim on an adobe or Victorian can require review before a permit issues. That review can add weeks, which is why we lock millwork and glass early rather than mid-job.
- Lead times, not labor, blowing the schedule: Custom cabinetry, architectural glass, and specialty stone tops frequently run eight to twelve weeks from order to delivery. Contractors who order after demo discovers a dimension shift end up with a gutted bathroom and no fixtures. We order to a finalized, written spec before we start.
- Inadequate ventilation in older Sonoma homes: Many 1950s and 1960s Sonoma bathrooms were built with a single small window and no exhaust fan, which means moisture sits in the room. That moisture is why we see subfloor rot and mold behind old tub surrounds. A proper vent installation – sometimes requiring a roof penetration with fire-rated flashing under Sonoma Valley Fire District standards – is part of how we scope the job.
Pricing for Bathroom Remodeling in Sonoma, CA
A full Bathroom Remodeling in Sonoma project runs $9,000 to $28,000. That range reflects real differences in scope: a mid-century guest bath refresh with a new vanity and fixtures sits at the low end, while a custom shower with architectural glass, a free-standing tub, and stone countertops drives toward the top. Here’s how the line items break down on the projects we do most often in Sonoma:
| Project | Typical Sonoma Range |
|---|---|
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
The main factors that move the number are foundation type (slab vs. raised), whether plumbing moves, historic review requirements, and finish selections. Every price we give is written, before work starts, and the number on day one is the number on the invoice. No change orders unless you ask for a change. Call (936) 259-2607 to schedule a free estimate and we’ll walk the bathroom with you and put it in writing.
We Also Serve Cities Near Sonoma
Penhallow Remodeling serves the wider Sonoma Valley and North Bay area. In addition to Sonoma itself, our crews regularly work in Boyes Hot Springs, Petaluma, Novato, and Cotati. If you’re in one of those communities and planning a bathroom remodel, the same written pricing, 365-Day Done Right Promise, and live-answer phone policy apply. Dispatch for all local crews is coordinated from our San Francisco Bay Area office, but the people who show up at your door are local, uniformed, and background-checked.
Serving Sonoma, CA - Our Local Coverage Area
We’re based in the Sonoma 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 Sonoma
Custom cabinetry typically runs eight to twelve weeks from order to delivery, and specialty stone tops can run four to eight weeks depending on the fabricator’s queue. The key is sequencing: we finalize the design and lock dimensions before ordering, so the lead time runs in parallel with demo and rough-in work rather than stalling the job. When lead times are not accounted for up front, they blow the schedule. We write the lead times into the schedule and the allowances into the price before any work starts. Call (936) 259-2607 for a written estimate that includes a realistic timeline.
Yes, most bathroom remodels in Sonoma require a permit, especially if you’re moving plumbing, altering the footprint, or touching electrical and ventilation. Hillside parcels often add Sonoma County grading review, biological resources clearance for oak woodland or riparian setbacks, and Sonoma Valley Fire District defensible-space sign-off before the building permit can issue. If your home is near the Plaza and under historic review, visible changes may need additional approval. We handle the permit package as part of the job. That’s what the written price covers.
Yes, and this is one of the areas where our Sonoma experience matters most. On a Spanish Colonial near the Plaza, we gutted a hall bath and found the original redwood subfloor furred unevenly off a clay-heavy slab that had moved with winter rains. We re-leveled the subfloor, kept the drain and supply rough-in where it was to avoid cutting into the adobe-era wall, and set a KraftMaid vanity with a Cambria top and a low-profile shower pan so the tile line stayed true. We coordinate with your designer or architect, match trim profiles and hardware finishes to the period, and order custom millwork early enough that historic review doesn’t delay the schedule. Call (936) 259-2607 to talk through your home’s specific situation.
Differently than on the flatlands, and you should ask any contractor about this before you sign. Sonoma’s hillside parcels carry mandatory pre-permit work: grading review, biological clearances, and Sonoma Valley Fire District defensible-space sign-off. Seasonal Diablo winds in late summer and fall push fire risk to extreme levels, so ember-resistant vent openings and fire-rated flashing details are standard on our hillside bathroom work. On the construction side, we plan for slab movement and drainage patterns unique to slope sites. We don’t treat these as add-ons. They’re part of the written price and the written schedule.
A full bathroom remodel in Sonoma runs $9,000 to $28,000, with small bathrooms at $5,000 to $12,000, walk-in shower installations at $4,500 to $12,000, and vanity installation at $800 to $3,000. Your actual number depends on foundation type, plumbing moves, historic review if applicable, and the finishes you choose. The important part: whatever we quote, it’s written down before work starts, and it holds. Call (936) 259-2607 to schedule a free estimate and get your own number in writing.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving Sonoma and the surrounding valley.







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