Commonwealth Bath Co.
Master Bathroom Renovation in Massachusetts

The one you enjoy every morning

Master Bathroom Renovation in Massachusetts

Full master bathroom renovations across Massachusetts. Freestanding tubs, double vanities, heated porcelain floors, frameless-glass showers, tile to ceiling.

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.

No spam. No high pressure. We call once, answer your questions, schedule the on-site if you want.

Licensed & Insured

MA Home & MA

NKBA Certified

Certified Bath Designer

4.9 / 5.0

214+ reviews

1180+ Bathrooms

Since 2013

Master bath specialists

A master bath that looks custom and runs right.

A master bathroom is a twenty-year room. It should feel like a hotel you don't want to leave and run without a plumbing mystery for decades. That's a design question, a plumbing question, and a waterproofing question — we handle all three.

Daniel is an NKBA Certified Bath Designer, and master bathrooms are her specialty. She'll design a layout that flows — toilet, tub, shower, vanity in a sequence that works — and spec materials you actually want to live with.

Behind the tile we install modern plumbing (PEX supply, PVC drain), Schluter waterproofing on every wet surface, Ditra uncoupling membrane under the floor, and joist reinforcement where deflection calls for it. The luxurious finish lasts because the boring stuff underneath is right.

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.

Master Bathroom Renovation in Massachusetts

What's included

Every master bath project includes:

  • Design package with 3D layout
  • Full permit handling
  • Plumbing relocation for freestanding tub
  • Double vanity with quartz counter
  • Heated porcelain floor (optional)
  • Frameless walk-in shower with Kerdi waterproofing
  • Freestanding soaking tub + freestanding filler
  • Smart lighting, dimmers, LED mirror
  • Bath fan with humidity sensor
  • Floor-to-ceiling large-format or mosaic tile
  • Custom niche, bench, or built-in shelving
  • Final punch, sealing, walkthrough

Our Process

How the project actually runs.

No mystery. No surprise delays. Here's the exact sequence.

01

Design

Daniel walks the bathroom, measures, talks lifestyle and wish-list. Delivers a 3D layout with fixture and material spec within a week.

02

Selection

Tile samples, fixture showroom visits (if desired), quartz samples. We help edit choices to avoid 50-option paralysis.

03

Build

Permit, demo, plumbing rough, framing, waterproof, tile, cabinets, glass, fixtures, paint, trim. Typically 4–6 weeks.

04

Final

Inspection, punch list, final sealing, final walkthrough. One crew from day one. Daily photo updates the whole way.

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.

Premium bathroom materials

Schluter Kerdi + Kerdi-Board

Shower and tub-deck waterproofing. Industry standard.

Schluter Ditra-Heat

Uncoupling membrane + integrated electric floor heating. Comfortable floors without the cost of a full hydronic system.

Freestanding tubs: Kohler Memoirs, TOTO Neorest, Victoria + Albert

Cast iron, acrylic, or volcanic limestone. We level and secure every tub properly — no wobble.

Floor tile: porcelain or marble

Large-format porcelain (24x48) or natural stone. Natural stone gets sealed and sealed again.

Quartz vanity: Cambria, Silestone, Caesarstone, MSI Q

Non-porous, heat and stain resistant, lifetime look.

Fixtures: Kohler, TOTO, Brizo, Waterworks

All-metal construction, parts-for-life brands. No plastic valve bodies.

Worth knowing first

Things most contractors won't tell you.

Freestanding tubs need serious floor

A filled cast-iron freestanding tub with a person in it is 800+ pounds in one spot. We verify joist capacity before ordering. Sometimes the joist bay needs a sister. Sometimes a blocked bay. We check first.

Double vanities = plumbing work

Most Massachusetts master baths were built with a single vanity. Going to a double means teeing off the existing supply and adding a drain branch — we permit it and run it properly. Not a two-hour job.

Heated floors are cheaper to install now than later

Ditra-Heat goes under the tile. Adding it after tile is already down is a full floor tear-out. If you're remodeling, we always price both options and let you decide with full information.

Tile to the ceiling looks expensive because it costs more

Adding tile from standard 48" to full ceiling roughly doubles the tile labor on the walls. Worth it on master baths. Feels custom; not an upcharge we recommend on every bath.

Live Job Log

Recent Master Bath Jobs in Massachusetts

Real master bath projects finished in Massachusetts over the last few months.

Full Bathroom Remodel

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
Tub to Shower Conversion

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

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 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

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 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

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

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 master bath clients.

Master bath renovation with double vanity, freestanding tub and a frameless glass shower. Their tile specialist laid herringbone floor perfectly. Crew cleaned up every single day.

Priya S.

Lexington, MA · Master Bath

Beautiful craftsmanship. They redid the master bath including plumbing rough-in relocation for the freestanding tub. No corners cut on the waterproofing.

Rachel T.

Wellesley, MA · Master Bath

Master bathroom remodel in Chelmsford: freestanding soaking tub, separate shower, double vanity, heated porcelain floor. Our design is gorgeous.

Evan L.

Chelmsford, MA · Master Bath

Questions

Most-asked about master bath.

4–6 weeks for a standard master with plumbing relocation. 6–8 weeks if we're reconfiguring walls, adding square footage, or doing custom stone tile.

Sometimes, by taking closet space or reworking adjacent walls. We handle the architectural drawings for permit and engineering sign-off where structural.

Both. Daniel is an NKBA Certified Bath Designer and we include design with every master project. We also happily execute a design from your interior designer or architect.

Yes on both. Steam adds 10–15 days to the schedule and requires full-ceiling waterproofing. Sauna adds a prefab room or custom build-out; we sub the Cedar carpenter for the room but handle the electrical and connection.

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

4.9

214 Google Reviews

1 day

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Licensed & Insured NKBA Certified On-Time Finish

Get Your Free Bathroom Estimate

On-site quote, firm number, no high-pressure sales. Response within 1 business day.

No spam. No high pressure. We call once, answer your questions, schedule the on-site if you want.