What comes out
Most tubs in 1990s and 2000s Nampa houses are one-piece or three-piece fiberglass units with a curtain rod. We cut the unit out, open the wall to the studs and check the subfloor under the old tub, which is where slow leaks tend to show up. Because the wall comes open to the framing, the City of Nampa's residential FAQ says a permit is required.
A typical starting point: almond fiberglass, a curtain and a cultured marble topWhat goes in
A standard tub alcove is about five feet wide, which makes a good shower. We move the valve to a comfortable height, add a handheld on a slide bar if you want one, frame a niche between the studs, waterproof the walls and floor, and tile. A low curb or a curbless entry both work. A sliding or hinged glass door closes off the opening.
A bench and a niche fit in the old tub footprintKeep one tub in the house
If this is the only tub in the house and you have small children, or think you'll sell in a few years, it can be worth keeping a tub somewhere. We'll talk through which bathroom should keep it.
Prices
Tub to walk-in shower
$3,500to$15,000
Converted and installed
HomeGuide · checked Oct 2026 · national
Tub to shower, all types
$2,000to$12,000
Average range incl. kits
HomeGuide · checked Oct 2026 · national
HomeGuide's conversion guide puts a tub-to-walk-in-shower conversion at $3,500 to $15,000, and all tub-to-shower conversions, including kit stalls, at $2,000 to $12,000. A tiled shower with glass lands in the first range.
