Full Bathroom Remodel
Full gut remodel in a 1926 Worcester two-family: cast-iron waste replaced with PVC, PEX supply, Schluter Kerdi shower, 12x24 porcelain floor. Lead-safe containment throughout.
Worcester Jul 2026
Full gut to final walkthrough
Full Bathroom Remodel in Massachusetts
Down-to-the-studs bathroom renovation across Massachusetts. New plumbing, new layout, Schluter-Certified waterproofing, firm quote, one dedicated crew.
Licensed Massachusetts NKBA Certified 4.9★ / 214+ Mon–Fri 7–6, Sat 8–2
Get Your Free Bathroom Estimate
On-site quote, firm number, no high-pressure sales. Response within 1 business day.
Licensed & Insured
MA Home & MA
NKBA Certified
Certified Bath Designer
4.9 / 5.0
214+ reviews
1180+ Bathrooms
Since 2013
A proper full remodel
Gut it properly. Build it once. Walk away clean.
A full bathroom remodel isn't a cosmetic refresh. It's a demolition, a new plumbing rough-in, new framing as needed, waterproofing, tile, fixtures, and trim — all sequenced so the finish work actually lasts. Done right on a Massachusetts hall bath, a full remodel takes 3–4 weeks and outlives its installers.
Most Massachusetts bathrooms we remodel were built in the 1950s–1990s. Cast iron drains, galvanized supply lines, cement-board-behind-tile with no real waterproofing. We strip all of that out, replace drain stacks with PVC, supply with PEX, waterproof with Schluter Kerdi or Kerdi-Board, and rebuild the room from the subfloor up.
We don't pack three projects and run between them. One Commonwealth Bath crew lives in your house from demo day to final walkthrough. Your project manager texts photo updates every evening. Firm number in the contract — no change-order theater.
See all of our Massachusetts bathroom renovation services — from full gut remodels to accessible baths, tub-to-shower conversions, and master suite builds across Massachusetts.
What's included
Every bathroom remodel project includes:
- On-site measurement and design consultation
- your city or town permit pulled and managed
- Full demo, debris haul-off, dust containment
- New PVC drain stack + PEX supply lines
- Schluter Kerdi or Kerdi-Board waterproofing
- Schluter Ditra underlayment on floor
- Subfloor/joist reinforcement as needed
- New venting, GFCI outlets, bath fan
Our Process
How the project actually runs.
No mystery. No surprise delays. Here's the exact sequence.
01
On-site walk
Daniel or a project manager walks your bathroom, measures, reviews layout options, talks scope and tile preferences.
02
Firm quote
Itemized, firm, 48-hour turnaround. Every line item, every material brand, every labor cost spelled out.
03
Build week
Permit pulled, demo day scheduled, one crew moves in. Daily photo updates. Floor protection every day.
04
Final walk
Inspection signed off, punch list completed, grout sealed, caulk cured. We don't leave until the last tile is perfect.
Materials We Trust
The brands and systems we spec.
We only install systems we can stand behind for twenty years. No brand bait-and-switch mid-job.
Schluter-Systems Kerdi / Kerdi-Board
Sheet-membrane waterproofing for walls and pan. We're Schluter-Certified installers. Industry-standard life-of-bathroom waterproof layer.
Schluter Ditra
Uncoupling membrane under every tile floor. Stops subfloor movement from cracking grout or tile.
Kohler, TOTO, Delta, Moen
Fixtures and valves with parts availability and solid warranty. No big-box mystery brands.
Porcelain tile: Daltile, Marazzi, Florida Tile
Large-format porcelain (12x24, 24x24, 24x48) plus mosaic accents. Samples on-site before the order.
PEX supply + PVC drain
Modern plumbing that won't scale or corrode like 60-year-old galvanized. Permit-friendly with MA code.
Quartz counters: Cambria, Caesarstone, MSI Q
Non-porous, no sealing, built for moisture. Undermount sinks installed with proper silicone gaskets.
Worth knowing first
Things most contractors won't tell you.
Your joist bay matters
Heavy tile floors (big-format porcelain, especially stone) need a subfloor stiffer than code. We check deflection on day one and sister joists before tile goes down if needed. Skipping this step is why tile floors crack two winters later.
Waterproofing is not caulk
Caulk and grout fail within a few years. The waterproof layer under the tile is what actually keeps water out of your framing. We spec Schluter sheet membrane on every shower. No paint-on 'waterproofing', no mesh-tape-at-corners shortcuts.
Permits are worth pulling
For plumbing or electrical work in your city or town, a permit protects you — inspected work means clean disclosure when you sell, and known-good hidden infrastructure. We handle the paperwork.
Layout changes = big-time cost lever
Moving the toilet 8 inches means cutting into the subfloor and rerouting a 3-inch drain. We'll always tell you whether a layout change is worth the cost. Sometimes it is. Often it isn't.
Live Job Log
Recent Bathroom Remodel Jobs in Massachusetts
Real bathroom remodel projects finished in Massachusetts over the last few months.
Tub to Shower Conversion
Tub-to-shower conversion in a Boston triple-decker: pulled cast-iron tub down three flights, rebuilt framing, Kerdi-Line linear drain, frameless glass.
Boston Jul 2026
Walk-In Shower Installation
Curbless walk-in shower in a Chelmsford ranch: zero-threshold pan, Kerdi-Board walls, bench seat, thermostatic valve, grab-bar blocking added.
Chelmsford Jul 2026
Master Bathroom Renovation
Master bath remodel in a Lexington colonial: relocated supply for a freestanding tub, double quartz vanity, heated Ditra floor, Wellesley-style wainscot.
Lexington Jul 2026
Full Bathroom Remodel
Hall bath gut in a Plymouth cape: rotted subfloor replaced, new rough-in, 24x48 large-format walls, building and plumbing permits pulled.
Plymouth Jun 2026
Accessible Bathroom Remodel
Accessible bath conversion in Andover: 36-inch doorway widened, curbless shower, fold-down bench, ADA grab bars, comfort-height toilet.
Andover Jun 2026
Shower Replacement
Shower replacement in a Springfield two-family: failed mud pan removed, Schluter Kerdi system, subway walls, mosaic floor, new mixing valve.
Springfield Jun 2026
Bathtub Replacement
Bathtub replacement in a Reading colonial: cast-iron out, new alcove soaking tub, tiled surround, Schluter-Jolly edge profiles.
Reading May 2026
What homeowners say
Reviews from bathroom remodel clients.
Our team gutted our 1970s hall bath and turned it into a spa. Zero-threshold shower, Schluter waterproofing, linear drain, perfect tile lines. They hit the schedule and stayed on budget.
Jennifer M.
Worcester, MA · Full Remodel
Small hall bath felt three times larger when they finished. Floating vanity, 12x24 large-format tile up the wall, frameless glass. Quoted three, they came in on the low end.
Daniel K.
Quincy, MA · Full Remodel
Hall bath remodel done while we were upstate. Came back to a finished room and a spotless house. Daniel texted daily updates with photos.
Marie B.
Shrewsbury, MA · Full Remodel
Questions
Most-asked about bathroom remodel.
Most Massachusetts hall baths take 3–4 weeks demo-to-walkthrough. Master baths with plumbing relocations or custom tile run 4–6 weeks. We dedicate one crew to your project.
Yes. Commonwealth Bath Co. pulls the permit, schedules inspections, and submits the drawings. Your only role is approving the scope.
Yes, unless it's your only bathroom. We install dust containment, protect floors, and keep utility shutoffs to predictable windows you can plan around.
Very common on 1950s–1970s Massachusetts baths. Our contract includes an allowance for hidden conditions. If we find framing rot or mold, we show you the photos, explain the fix, and document the added cost before doing the work.
Daniel is an NKBA Certified Bath Designer — design is included with every full remodel. We walk your bathroom, review inspiration images, and hand you a design package with layout, tile selections, and fixture spec within a week.
We don't use rotating subs. Our plumber and electrician are licensed in both Massachusetts and work with Commonwealth Bath on every job. Same faces in your house every day.
Worcester County bathroom remodel costs run slightly above the national average due to higher labor rates and permit fees. A hall bath full gut-and-rebuild — PVC drain, PEX supply, Schluter waterproofing, tile, vanity, toilet, fixture — typically costs a range we quote after the walk depending on tile grade. A master bath renovation with walk-in shower, double vanity, heated floor, and no major plumbing relocation runs a range we quote after the walk. If you're relocating the toilet or tub, add a range we quote after the walk for the subfloor work and drain reroute. We break every line item in writing before you sign.
Yes — if your project involves moving any plumbing (toilet, drain, supply lines), upgrading electrical (GFCI, new circuit for a heated floor or exhaust fan), or structural work (enlarging the bathroom, moving a wall). Worcester County and Middlesex County both require a Home Improvement Contractor license and a building permit for these scopes. Cosmetic work — replacing a vanity in place, swapping fixtures without moving pipes, installing new tile over existing backer — can often be done without a permit. We tell you exactly which category your project falls in at the estimate appointment. We pull all permits ourselves.
Porcelain tile is the top choice for Massachusetts bathrooms because it's completely non-porous and unaffected by the seasonal humidity swings we get from June through September. Large-format porcelain (12×24 or 24×24) is especially popular right now — fewer grout lines, easier to clean, and reads upscale. For floors we use a slip-rated porcelain or textured mosaic to meet code. Natural stone (marble, travertine) is beautiful but needs sealing every 1–3 years in a shower environment. We install it with proper penetrating sealer and give you a maintenance schedule if you go that route. The non-negotiable for any Massachusetts bathroom: a properly sized humidity-sensing exhaust fan. Timers shut off too early and leave moisture in the walls. We spec humidity sensors on every project.
Related services
Other bathroom projects we handle.
Ready when you are
Let's start your bathroom.
Free on-site estimate. Firm quote within 48 hours. No high pressure, ever.
1180+
Bathrooms Completed
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Licensed & Insured NKBA Certified On-Time Finish
Get Your Free Bathroom Estimate
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Middlesex County NY
Bathroom Remodel Middlesex County — Town by Town
A bathroom remodel in Middlesex County NY involves more than just picking tile. Each of The counties we work across most — has its own building department, permit process, and inspection schedule. Our crew navigates all of them, pulling permits under our Middlesex County Home Improvement Contractor license and managing every inspection through final sign-off.
Here is what homeowners in each town should know before starting a bathroom remodel in Middlesex County:
Middlesex County
1950s ranches and split-levels with a tight 5x8 hall bath. Most of the value is in fixing the layout, not enlarging the room.
Worcester County
Heavily pre-1940. Expect cast-iron waste and knob-and-tube in the bath circuit. We price both in up front.
Essex County
Victorians and mill-era two-families. Lead protocols are the norm here, and nothing is square.
Norfolk County
South Shore colonials and capes. Often paired with an aging-in-place brief for owners staying put.
Suffolk County
Boston triple-deckers and condos. Access is the constraint — stairwells, parking permits, board approvals.
Hampden & Berkshire
Old housing, long heating seasons. Heated floors pay back faster out here than east of Worcester.
Bathroom remodel permits in Middlesex County
Any bathroom remodel in Middlesex County NY that involves moving plumbing, adding electrical circuits (heated floors, new exhaust fan wiring), or structural changes requires a building permit from the applicable town building department. Cosmetic-only work — swapping a vanity in place, new tile over existing backer — typically does not. We assess permit requirements at your free on-site estimate and pull all permits ourselves. You never have to deal with the building department.
Guest / hall bath
Vanity, toilet, tile and fixtures in the same footprint. No plumbing relocation.
Full gut, same footprint
Down to studs. New supply and waste, Schluter waterproofing, full tile, permits.
Master bath
Walk-in shower, double vanity, heated floor, and layout changes where they earn their keep.
Looking for a complete overview of what it takes to do a bathroom remodel in Massachusetts — including town-by-town permit details, cost breakdowns by scope, and our full service area? Our homepage covers everything Massachusetts homeowners need to know before starting a renovation.