Bathtub Replacement Guide for Greater Boston Homeowners

Replace, refinish, or convert

Boston has some of the highest cast-iron tub density in the country, most pre-war triple-deckers, brownstones, and Victorian singles across Brookline, Newton, and Cambridge still have their original tubs. A structurally sound cast-iron tub in that stock can be refinished for a fraction of a replacement and hold 3–7 years. If the tub is cracked, flexing, or the surround shows water damage, refinishing hides a bigger problem.

In multi-bathroom South Shore and MetroWest homes across Hingham, Plymouth, Newton, and Framingham, pricing a tub-to-shower conversion in parallel is worth it. Suburban alcoves convert cleanly and the walk-in shower is usually the more-used fixture.

Tub types and installed cost in Greater Boston

Most Boston-area replacements are alcove tubs. Acrylic and fiberglass install fastest and dominate suburban stock. Cast-iron tubs are extremely common in pre-war intown and inner-suburb stock, and add real labor, an issue in triple-decker second- and third-floor bathrooms where the tub often comes out in pieces because it won't clear the stairwell.

• Acrylic alcove tub (most common): $2,200 – $5,100 installed
• Fiberglass alcove tub: $1,900 – $4,000 installed
• Steel enameled alcove tub: $2,500 – $5,400 installed
• Cast-iron alcove tub: $4,000 – $7,900 installed (weight + labor)
• Drop-in tub with new deck: $5,000 – $10,200 installed
• Freestanding soaking tub: $6,300 – $13,800+ installed (plumbing usually moves)
• Walk-in tub (accessibility): $8,800 – $17,000 installed

Source: Reference ranges for professionally installed, permitted bathroom projects across Greater Boston, aggregated from full-service remodeler quote data ((HomeGuide, 2024), (Angi, 2024)) and adjusted for the local market using regional construction-cost indices ((RSMeans CCI, 2024)). ROI benchmarks cross-checked against (Cost vs. Value, 2024). Not a quote; actual bids depend on your specific bathroom.

What a clean replacement scope includes

A like-for-like alcove swap in a Boston-area home should include tub removal and haul-away, valve and trim swap or reuse, new tub, new surround, plumbing reconnection, waterproofing, caulk and finish work, and disposal. In triple-deckers and brownstones, cast-iron demo is usually cut in place and hauled out in pieces.

• Tub removal and haul-away (cast iron cut in place in most intown stock)
• Valve and trim reuse or swap
• New tub set, leveled, and plumbed
• New three-wall surround (acrylic panels or tile)
• Waterproofing behind the surround
• New caulk seams and finish trim
• Optional: subfloor repair, drain relocation, vent-fan replacement

Boston-area cost drivers that push the range

The biggest swings across Greater Boston are subfloor condition, cast-iron everywhere, and access. Pre-war triple-deckers (Dorchester, South Boston, Somerville, Cambridge, Chelsea) and brownstones (Back Bay, South End, Beacon Hill) often have cast-iron drains, plaster walls, knob-and-tube nearby, and prior moisture damage. Second- and third-floor bathrooms above kitchens frequently need vent-fan rework at the same time.

Post-war suburban stock in Newton, Waltham, Quincy, Braintree, and along the South Shore is cleaner, PVC drains, drywall, standard alcoves. That's where a like-for-like acrylic swap actually hits the low end.

• Subfloor repair (common in pre-1960 triple-deckers): +$1,200 – $3,200
• Cast-iron drain replacement: +$800 – $2,200
• Cast-iron tub removal through narrow triple-decker stairs (cut in place): +$500 – $1,100
• Tile surround instead of acrylic: +$2,500 – $5,800
• Vent-fan replacement (undersized common in older stock; MA winters make ventilation critical for moisture): +$450 – $900
• Historic district / historical commission review (Beacon Hill, Back Bay, historic Cambridge, Salem): schedule slip, occasional cost
• Condo association water-shutoff coordination (Back Bay, South End, Seaport high-rises): +$200 – $450
• Boston / MA permit + inspection: +$200 – $500
• MA plumber-license rule: all plumbing work must be done by a licensed MA plumber, real line item on the quote

Source: Reference ranges for professionally installed, permitted bathroom projects across Greater Boston, aggregated from full-service remodeler quote data ((HomeGuide, 2024), (Angi, 2024)) and adjusted for the local market using regional construction-cost indices ((RSMeans CCI, 2024)). ROI benchmarks cross-checked against (Cost vs. Value, 2024). Not a quote; actual bids depend on your specific bathroom.

Timeline and disruption

A like-for-like acrylic alcove replacement is a 1–2 day project across Greater Boston. Cast-iron swaps or tile surrounds push to 3–5 days. Freestanding tubs with plumbing moves run 4–7 days.

For single-bathroom triple-deckers, most remodelers schedule replacements mid-week so the shower is back before the weekend. Confirm the day-by-day plan, dumpster placement (Boston / Cambridge street-parking permits are a real coordination step), and permit timing before signing.