Home › Cost Calculators › Tub Replacement Cost Calculator
Tub-to-Tub Replacement Cost Calculator for Sun Valley
The cheapest way to make a dated bathroom feel new, and the one bathroom project that can still fall outside a building permit. Two things decide the price: what the surround is made of, and how the old tub gets out of the room.
Why your estimate is what it is
What drives tub replacement costs in Sun Valley
A like-for-like tub replacement is the most contained project on this site. The footprint does not change, the drain and the valve stay where they are, and the room is out of service for days rather than weeks. That also makes it the one bathroom project that can genuinely sit inside Washoe County's permit exemption, because nothing about the water, waste or vent pipes is being rearranged. What moves the price is the surround material, whether the plumbing stays put, and — more than people expect — whether the tub coming out is cast iron.
Getting the old tub out is a real line, not a rounding
A cast-iron tub weighs 300 to 500 pounds empty and almost never comes out of an alcove whole. It gets broken up in place behind sheeting: noisy, dusty, slow, and heavy to carry out and dispose of. An acrylic or fibreglass tub on the ground floor comes out largely intact in an hour. Add a staircase or a hallway with a turn and the figure moves again. It is worth asking what protection goes down on the route out, because that is where floors and door casings get damaged.
Reusing the rough-in is what keeps this outside a permit
Washoe County exempts the repair or replacement of residential sinks, toilets and water closets where there is no rearranging of the water, waste, or vent pipes, and treats tiling and interior finish work as exempt too. A tub swapped for a tub in the same position, on the same drain, with the same valve, generally sits inside that. Add a new circuit, a new exhaust fan duct or any framing repair and it does not. The exemption is about what moves, not about what the tub cost.
A deeper tub in the same alcove often solves the actual complaint
Most people asking about a bigger bathroom are really describing a tub they cannot lie down in. A standard alcove tub holds about 14 inches of water; a soaking tub in the same 60-inch opening can hold 18 to 20. That is a materially different bath, it uses the existing rough-in, and it costs a fraction of moving anything. It is worth pricing before concluding the room needs re-planning — and worth checking the water heater can fill it, because a deeper tub asks for more hot water in one go.
What could push your price higher
- A freestanding tub, which needs new supply routed to it, a floor or wall filler, and a floor that can carry it
- Cast iron — either coming out, going in, or both
- Moving the valve or the drain, which turns an exempt project into a permitted one
- A tiled surround taken to the ceiling rather than stopping at 60 inches
- Natural stone, which costs more to buy, more to set, and needs sealing
- A subfloor or framing that turns out to be damaged once the old tub is out
What could bring it down
- Reusing the existing rough-in exactly — same drain, same valve, same position
- An acrylic or composite panel surround instead of tile
- An acrylic tub rather than cast iron, which is lighter to handle both ways
- Ground-floor access with a straight route out
- A house under 20 years old, where the supply lines behind the wall are very unlikely to surprise anyone
- Adding an access panel now rather than wishing for one later
Turn the estimate into a real number
This calculator works from the 2026 cost figures published on this site for Sun Valley. What it cannot see is the condition of your subfloor, what is inside your walls, or how level the room actually is. We will come out, measure the bathroom and give you a written scope with no pressure attached.
Get my free quoteFrequently asked questions
How much does a bathtub replacement cost in Sun Valley?
The figures published on this site put a basic replacement — a standard alcove tub with an acrylic surround in the same layout — at $3,000 to $5,500; a mid-range replacement with an upgraded tub style, a tile surround and new fixtures at $5,500 to $9,000; and a higher-end replacement with a freestanding tub, custom tile and plumbing relocation at $9,000 to $16,000 and up. This calculator builds a number from your own tub, surround and access, and tells you which tier it lands in.
Do I need a permit to replace a bathtub?
Often not, and this is the one bathroom project where that is genuinely true. Washoe County exempts the replacement of sinks, toilets and water closets where there is no rearranging of the water, waste, or vent pipes, and separately exempts interior finish work including tiling. A tub swapped in the same position on the same rough-in generally falls inside both. What takes it outside is movement — a relocated drain or valve — or anything additional such as a new exhaust fan, a new circuit or framing repair. Sun Valley is unincorporated Washoe County; confirm your own project with the county building department before assuming.
Is it cheaper to replace the tub or convert it to a shower?
Replacing, generally. This site says so directly, and the reason is the drain: a replacement keeps the existing rough-in and footprint, while a conversion has to upsize the waste from 1½ to 2 inches and reposition it, which means opening the floor. The published basic tiers reflect it — $3,000 to $5,500 for a replacement against $4,500 to $8,500 for a conversion. That said, the decision should be about how the household uses the room. If nobody has taken a bath in five years, the cheaper project is not the better one.
Should I refinish the tub instead of replacing it?
It is worth pricing, particularly for a cast-iron tub that is structurally fine but stained or chipped. Refinishing costs a fraction of replacement, takes a day or two, and avoids the demolition entirely. The trade-offs are real: a refinished surface has a service life measured in years rather than decades, it is less forgiving of abrasive cleaners, and it does nothing about a dated surround or a tub that is simply the wrong shape. If the tub is sound and the complaint is cosmetic, refinish. If the complaint is the tub itself, replace.
How long does a tub replacement take?
Usually 2 to 5 days for a like-for-like swap, which is why it is the least disruptive bathroom project on this site. A panel surround is at the fast end. A tiled surround adds days for setting, grouting and curing. Cast-iron removal adds most of a day on its own. If the plumbing is moving, add time for the rough-in inspection. The longest delays are usually not on site at all — a specific tub or a stone slab can carry weeks of lead time, and nothing should be demolished until it is confirmed and on order.
Will a new tub fit the old opening?
Standard alcove tubs are 60 inches long and either 30 or 32 inches wide, so most replacements drop into the existing opening. Where it goes wrong is depth and drain position: a deeper soaking tub may need the overflow reworked, and left-hand and right-hand drains are not interchangeable. Freestanding and drop-in tubs are a different matter entirely and rarely reuse anything. Measure the opening and confirm the drain hand before ordering, because a tub that does not fit is an expensive thing to discover on delivery day.
Related calculators
Planning the whole bathroom? Start at the Sun Valley bathroom calculator hub, or read more about our tub-to-tub replacement service.