Tub-to-Shower Conversion in Danbury, CT
A tub to shower conversion in Danbury, CT means Hat City Bath Remodeling removes the alcove tub, usually a 60 x 30 unit, and builds a walk-in shower on the same footprint, with a new drain, a new valve, new waterproofed walls and a glass door. It looks like a swap and is not: a tub drains through a 1-1/2 inch trap and a shower needs a 2 inch outlet, the valve moves up the wall, and under the 2022 Connecticut State Building Code replacing or rearranging valves, pipes and fixtures is permit work, not an exempt repair, so we pull the permit. Angi's 2026 guide averages the conversion at $3,000 and runs it from $1,500 to $15,000, with a custom tiled walk-in shower at $3,500 to $15,000.
$3,000 average; $1,500 - $15,000 range; $3,500 - $15,000 custom tiled walk-in (Angi 2026); $1,500 - $8,000 normal range (HomeAdvisor 2026) · full pricing guide
The price turns on the walls and the floor. Angi's 2026 guide puts the average conversion at $3,000, a prefab shower stall at $1,000 to $8,000 and a custom tiled walk-in shower at $3,500 to $15,000; HomeAdvisor's 2026 guide gives a normal range of $1,500 to $8,000; HomeGuide's July 2025 guide spans $2,000 to $12,000 and itemizes the shower pan at $500 to $3,500, a glass door at $400 to $1,900, plumbing at $500 to $1,100, valve replacement at $225 to $575 and tub removal at $70 to $800. Wall material is priced per square foot: fiberglass or acrylic at $0.75 to $12, tile at $1 to $17, cultured marble at $10 to $35 in HomeAdvisor's guide. Labor is 40% to 60% of the total. Our cost page lists every line by source.
Our spec starts under the floor. The International Plumbing Code's fixture table gives a bathtub a 1-1/2 inch trap and a shower outlet a 2 inch minimum, so we replace the drain rather than reuse it, and a 2 inch trap arm may run no more than 8 feet to its vent, falling 1/4 inch per foot. We change the valve from a tub-shower unit roughed at 48 inches to a shower-only unit at 72 to 78 in. in Kohler's drawings, pressure-balance or thermostatic to ASSE 1016 with the limit stop at 120 degrees F. The floor is an acrylic base, a tiled pan over a pre-sloped liner or a membrane meeting ANSI A118.10, or a pre-sloped foam tray; the walls are cement board or foam panel under tile or a prefab surround, never water-resistant drywall (R702.4.2). We set blocking for grab bars rated to 250 pounds while the studs are open.
The permit question has a clear answer. Section 105.2 of the 2022 Connecticut State Building Code exempts plumbing repairs only when they do not involve the replacement or rearrangement of valves, pipes or fixtures; a conversion replaces all three, so it is permit work under Section 105.1, which we file through the Danbury Permit Center's OpenGov portal. The Permit Center schedules a rough plumbing inspection before we close the walls, a pan test where we build a liner or membrane floor, filled to not less than 2 inches for not less than 15 minutes, and a final. On time, Houzz advises a couple of weeks of disruption as a bare minimum for anything beyond a like-for-like swap; we measure a custom glass door only after the tile is set, and it takes 7-10 business days to make. Our permit and inspection guide has the exemption wording and each town's building department.
Danbury's older houses shape our demo. An alcove tub in a house built decades ago may be enameled cast iron; Kohler's 5.5-foot Bellwether weighs 380 lbs against 97.0 lb for a 60 x 30 acrylic tub, which is why removal prices run from $70 to $800 in HomeGuide's guide and up to $4,500 in HomeAdvisor's bathtub guide. In a pre-1978 house the EPA RRP rule treats demolition of painted surfaces as covered work regardless of square footage, and that demo needs RRP certification; ask us to show it. If an old floor or adhesive tests positive for asbestos, Connecticut requires abatement of more than 3 square feet to be done under a state asbestos license, so we bring in an abatement firm first. A tub on an exterior wall exposes the cavity, which Climate Zone 5 rules say we must insulate and air seal before the new walls go up.
The next step is to decide three things before you ask us for the estimate: whether the house keeps another tub, acrylic or tile, and curb or curbless. Send that through our quote form, and our estimate names the base or pan method, the membrane, the valve model and the glass. Before you sign, ask us for our Home Improvement Contractor registration number, check it on the DCP eLicense lookup, and ask for our certificate of liability insurance. We write the contract the Home Improvement Act requires, with a starting date, a completion date and the three-day cancellation notice. The Department of Consumer Protection advises that an up-front payment should generally not exceed one-third of the price.
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Signs the tub should become a shower
A tub earns its space when someone uses it. These are the conditions that tell us the alcove is doing a shower's job badly, and that the next failure of the surround will cost about as much as the conversion itself would.
- Nobody has filled the tub in years; Houzz's 2025 study found 25% of renovating homeowners remove theirs, and 82% of those enlarge the shower in its place.
- Stepping over the tub rim has become a two-hand job for someone in the house, or a fall in the tub has already happened once.
- The fiberglass tub-shower unit has yellowed, crazed or cracked at the floor, and no refinishing kit has lasted a year.
- Caulk at the tub-tile joint splits every winter, grout stays dark, and the ceiling below or the floor in front of the tub is soft.
- The shower head sits so low on the tub wall that a tall person stoops, and the old two-handle valve scalds when a toilet flushes.
The first two signs point to a conversion. The last three we can also solve by replacing the tub in kind, which keeps a bath in the house; our bathtub replacement page covers refinishing at $280 to $600, liners, and a new alcove tub against the conversion.
From a 1-1/2 inch tub trap to a 2 inch shower drain: what moves under the floor
The plumbing is what separates a conversion from a surround swap. The International Plumbing Code's fixture table lists a bathtub at 2 fixture units with a 1-1/2 inch trap, but a shower outlet has a separate 2 inch minimum under the code's receptor section. So we take out the tub's waste and overflow at one end of the alcove and set a 2 inch drain where the new floor needs it. The vent rule constrains where: Table P3105.1 limits a 2 inch trap arm to 8 feet of developed length from the trap weir to the vent fitting, against 6 feet for 1-1/2 inch, and we pitch drains 2 inches and smaller at 1/4 inch per foot. Angi's 2026 shower pan guide prices plumbing relocation at $600 to $1,600 and a new drain line at $1,000 to $7,000.
A linear drain changes the math: TileLetter notes it lets the drain sit at almost any location in the compartment with the floor sloped in one direction toward it. The drain body matters too: a Schluter KERDI-DRAIN has a 2 inch outlet and an integrated bonding flange the membrane adheres to, where a clamping-ring drain relies on weep holes. The supply side is simpler: we move the valve from 48 inches to the 72 to 78 in. shower-only height, in PEX rated to 160 psi at 73 degrees F or Type L copper.
Why the old 60 x 30 tub may be cast iron, and what 380 lbs means for demo
Kohler calls the 60 x 30-1/4 alcove bath an industry-standard size, and its Bellwether model in that footprint is enameled cast iron with an integral apron; older Danbury alcoves often hold one. The weight is our demo problem: Kohler's 5.5-foot cast iron Bellwether is listed at 380 lbs empty, where American Standard's 60 x 30 acrylic tub with fiberglass reinforcement ships at 97.0 lb. The published removal prices show the spread: Angi's 2026 conversion guide puts tub removal and disposal at $150 to $300, HomeGuide's at $70 to $800, and HomeAdvisor's 2026 bathtub guide at $150 to $4,500. What the tub was sitting on is the second question. Angi's 2026 bathtub guide prices subfloor preparation or reinforcement at $300 to $800; a soft floor in front of the old tub usually means that line item is real.
The third question is what is on the walls. In a house built before 1978, the EPA RRP rule covers demolition of painted surfaces regardless of area, so pulling a painted alcove or window trim is work that needs EPA RRP certification. Where old flooring or mastic tests positive for asbestos, abatement of more than 3 square feet must be done under a state asbestos license. Once the tub is out of an exterior-wall alcove, we fill the open cavity with insulation without gaps and set a rigid air barrier before the new walls close.
Acrylic base, tiled pan or foam tray: three ways to build the new floor
We can build the floor of the converted shower three ways. The first is a manufactured base: Kohler's alcove bases come at 60 x 32, 60 x 36, 48 x 36 and 36 x 36, and Angi's 2026 guide prices a fiberglass pan at $150 to $450 and an acrylic one at $200 to $620. It needs no flood test, but its size and drain location are fixed. The second is a tiled pan we build on site to Tile Council of North America method B415, a mortar pre-slope at 1/4 inch per foot under a liner clamped into a two-piece drain, or to methods B421 and B422, a membrane meeting ANSI A118.10 adhered to the backing and to a bonding-flange drain.
Either version we flood test before tile to the code's 2 inches for 15 minutes, and Angi prices a custom tile pan at $900 to $3,500. The third is a pre-sloped foam tray, a wedi Fundo or Schluter KERDI-SHOWER, with the slope and the waterproofing built in; wedi's Fundo Curbless version has a 3/4 inch perimeter so it recesses flush into the subfloor. For a curbless floor on wood framing, TileLetter notes there is no Handbook method: we recess the 23/32-inch subfloor between the joists and run the membrane one foot beyond the high point. Mosaics up to 4 inches follow a four-way slope to a center drain, and large-format tile of 15 inches or more needs a linear drain and a single slope.
The decision: acrylic or tile, curb or curbless, convert or keep a tub
Three choices set the price, the permit scope and the lead time of a conversion. The published ranges separate the first two cleanly, and the third depends on who else lives in the house and on who will buy it one day.
Prefab acrylic surround or tiled walls
A prefab stall or surround runs $1,000 to $8,000 and a kit alone $350 to $2,300 in Angi's 2026 guide; it has no grout to seal and no pan test. A tiled shower runs $3,500 to $15,000 custom, carries tile at $1 to $17 per square foot plus the membrane, and takes any size, a niche, a bench and a linear drain. Our walk-in shower installation page covers how we build the tiled version layer by layer.
Low curb or curbless entry
A curbed shower keeps the water in with a 3 inch liner upturn over the curb. For a curbless one we hold the threshold to 1/2 inch, which means recessing the subfloor or using a 3/4 inch foam tray, and we run the membrane one foot beyond the high point of the floor. Fixr's 2025 guide says curbless does not usually add much to the cost. Our accessible bathroom page covers roll-in dimensions, seats and grab bars.
Convert now or keep one tub
Houzz's 2025 study found 26% of renovating homeowners keep their existing tub and 34% upgrade it. If this is the only tub in the house, the question is who will need one: small children, a future buyer, or anyone who soaks. A replacement alcove tub installed runs $1,500 to $2,000 in HomeGuide's 2025 guide, far less than a tiled conversion, and a second bathroom can take the shower instead.
Whichever way the choice goes, the drain, the valve and the waterproofing are the same decisions, and we put them in writing. An estimate that says new shower without naming the base, the membrane and the valve has not priced the job; ours names all three.
Tub-to-Shower Conversion FAQs
How much does a tub to shower conversion cost in Danbury, CT?
No guide publishes a Danbury figure, so we quote the national ranges and the local wage data. Angi's 2026 guide averages the conversion at $3,000, from $1,500 to $15,000, with a prefab stall at $1,000 to $8,000 and a custom tiled walk-in shower at $3,500 to $15,000. HomeGuide's 2025 guide spans $2,000 to $12,000. May 2024 BLS data puts construction wages in the Bridgeport-Stamford-Danbury metro at $33.03 an hour against $30.73 nationally, so a Danbury job lands in the upper half of each range.
Does a tub to shower conversion need a permit in Danbury?
Yes. The 2022 Connecticut State Building Code exempts only plumbing repairs that involve no replacement or rearrangement of valves, pipes or fixtures, and a conversion replaces the fixture, the valve and the drain. We file the application through the Danbury Permit Center's OpenGov portal, and the state adds an education fee of 26 cents per $1,000 of construction value. Expect a rough plumbing inspection with the walls open, a pan test if we build a liner or membrane pan, and a final inspection.
How long does a tub to shower conversion take?
It depends on the floor and walls. A liner-style acrylic conversion, which HomeGuide's 2025 guide prices at $1,200 to $9,500, is the fast version. A tiled shower follows cure times we do not shortcut: Schluter asks for 24 hours after setting a KERDI membrane before testing, LATICRETE allows a HYDRO BAN flood test 2 hours after the second coat at 70 degrees F, and tile needs 24 hours before grouting. Houzz advises a couple of weeks of disruption as a bare minimum, and a custom glass door adds 7-10 business days of manufacturing after we measure the tile.
What size shower replaces a 60 x 30 tub?
The tub's 60 inch alcove takes a 60 x 32 or 60 x 36 base from Kohler's standard sizes, and Angi's 2026 guide prices a large 36 x 60 prefab kit at $1,200 to $4,200 against $1,000 to $2,800 for a small 32 x 32 stall. A 30 by 60 inch footprint also meets the ADA roll-in shower minimum, so we can make the same alcove a curbless, roll-in shower if we hold the threshold to 1/2 inch.
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