Bathroom remodeling contractors in Cambridge, MA

Cambridge prices at the top of the Massachusetts market. Labor runs at or above Boston rates, lots are tight, and a large share of the housing sits inside historic or neighborhood-conservation districts that add review time to exterior work.

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Bathroom remodel cost in Cambridge

Based on a 60 sq ft bathroom remodel scope, adjusted by the Massachusetts regional cost index and a Cambridge metro multiplier of 1.14×. A 10% contingency reserve is included. These are budgeting estimates, not quotes.

Source: Our Haus cost engine — per-square-foot bands from public industry data (Cost vs. Value, NAHB, RSMeans-derived regional indices), adjusted for Massachusetts and the Cambridge metro.
Cambridge bathroom remodel	Low	Likely	High
Basic finishEntry-level materials, no layout change	$17k	$25k	$34k
Mid-range finishThe most common scope	$34k	$47k	$64k
High-end finishCustom materials and detail	$64k	$84k	$118k

Source: Our Haus cost engine — per-square-foot bands from public industry data (Cost vs. Value, NAHB, RSMeans-derived regional indices), adjusted for Massachusetts and the Cambridge metro.

Estimated range — based on BLS OEWS national average wages and BLS PPI material indexes applied to Our Haus baseline unit costs, as of June 2026. Estimates are shown as a range and help set expectations. They are not a quote, a verified price, or an appraisal of what a contractor will charge.

Where the money goes (mid-range finish)

Line item
Line item	Low	Likely	High
Tile & shower/tub	$6.9k	$9.4k	$13k
Vanity & countertop	$3.8k	$5.1k	$7.0k
Plumbing fixtures	$4.4k	$6.0k	$8.2k
Flooring	$2.2k	$3.0k	$4.1k
Electrical & lighting	$1.9k	$2.6k	$3.5k
Drywall, paint, trim	$2.2k	$3.0k	$4.1k
Labor (general)	$8.8k	$12k	$16k
Permits & design	$1.3k	$1.7k	$2.3k

What drives the price in Cambridge

Triple-deckers and two-families dominate most of the city, with Victorian singles in West Cambridge and mid-rise conversions near the squares. Expect plaster walls, old steam and hydronic heat, undersized electrical panels, and — in pre-1978 housing — lead-safe work practices on any renovation.

Tile scope and size: Labor scales with the number of cuts, not just the area. Large-format tile, herringbone layouts, niches, and curbless entries all raise the labor line well above a simple 12x24 floor.
Moving plumbing: Keeping the toilet, sink, and shower in place keeps the job in the low band. Moving the toilet is the single most expensive fixture move because of the waste line.
Tub-to-shower conversion: Common in older New England homes, and it usually means reframing the floor, resetting the drain, and full waterproofing rather than a swap.
Ventilation: Many older bathrooms have no fan or vent into an attic. Adding a properly sized fan ducted to the exterior is inexpensive and prevents the mold problem that causes the next remodel.
Hidden water damage: In pre-1950 homes, a failed shower pan has often been leaking quietly for years. Budget contingency here specifically.

Common Cambridge neighborhoods where this work comes up: Harvard Square, Kendall Square, Porter Square, West Cambridge, Cambridgeport, North Cambridge.

Permits and rules in Cambridge

Authority: City of Cambridge Inspectional Services Department

Building, electrical, plumbing, and gas permits are separate and pulled by licensed trades where applicable. Exterior changes in historic districts require Historic Commission review before the permit issues, and demolition of any kind faces an extra review step for buildings over fifty years old.

Massachusetts contract and licensing rules

Same Massachusetts rules as Boston: written contract over $1,000, Home Improvement Contractor registration, one-third deposit cap, and required start and completion dates in the contract.

Timeline and season in Cambridge

Exterior work runs April through November. The contractor pool overlaps Boston entirely, so the spring booking rush is the same — interior work scheduled for January and February prices and starts best.

Typical duration: 3–6 weeks on site.

1
Design and selections · 1–3 weeks
Fixture and tile selection. Order everything before demolition — a backordered valve stops the whole job.
2
Permitting · 1–3 weeks
Plumbing and electrical permits; a building permit if framing changes.
3
Demolition · 1–2 days
Down to studs. Subfloor and framing condition is assessed here.
4
Rough-in and inspection · 3–5 days
Plumbing and electrical rough, fan duct, blocking for grab bars, then inspection.
5
Waterproofing and tile · 1–2 weeks
Backer board, waterproof membrane, pan slope, then tile and grout with cure time between steps.
6
Fixtures and finish · 3–5 days
Vanity, toilet, trim, glass measurement — shower glass is typically ordered after tile is set and adds 1–2 weeks.

What's included — and what usually isn't

Bathrooms are small but dense: plumbing, waterproofing, tile, ventilation, and electrical all land in a few dozen square feet. Cost per square foot runs higher than almost any other room, and the difference between a good and a bad job is mostly invisible waterproofing work.

Typically included

• Demolition down to studs and subfloor where tile is being replaced
• Waterproofing and shower pan or tub set
• Tile — floor, shower walls, and any accent work
• Vanity, countertop, mirror, and storage
• Plumbing fixtures: toilet, shower valve, trim, and drains
• Exhaust fan sized to the room and vented outside
• Electrical: GFCI protection, lighting, and any heated-floor circuit
• Paint and trim

Usually excluded

• Rotted subfloor or joist repair found at demolition
• Relocating the toilet drain, which usually means opening the ceiling below
• Whole-house water pressure or supply-line issues
• Mold remediation behind an existing failed shower

What a complete Cambridge estimate spells out

• The waterproofing system by name (sheet membrane, liquid membrane, or a proprietary system)
• Tile allowance in dollars per square foot, supply only, with quantity
• Fixture model numbers or a per-fixture allowance
• Whether shower glass is included and when it is measured
• Exhaust fan CFM and where it vents
• A stated unit price for subfloor or joist repair if it is found

Full checklist: what should be in a contractor's estimate.

Looking for a bathroom remodel contractor in Cambridge?

We don't keep a contractor directory, and we won't pretend to. The dependable process is to gather two or three referrals locally, check the Massachusetts registration or license rules above, confirm general liability and workers' compensation directly with each carrier, then compare the written proposals side by side against the ranges on this page.

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Have a Cambridge quote in hand?

Run it through the quote range checker. We compare it against the Massachusetts cost index, flag line items that look high, and review the contract against Massachusetts home-improvement rules.

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Bathroom remodel in Cambridge — common questions

Why do small bathrooms cost so much per square foot?

Every trade has to work in the same tiny room in sequence, and the fixed costs — permits, waterproofing, a shower valve, a vanity, a toilet — do not shrink with the room. A 40-square-foot bathroom and a 70-square-foot bathroom often differ by only a few thousand dollars in total.

How long will I be without the bathroom?

Plan on the full on-site duration, typically three to six weeks. Cure times for mortar, waterproofing, and grout are not compressible, and shower glass usually arrives a week or two after tile is finished.