Cost to Add a Shower to a Half Bath

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Your shower itself is where you get to play designer. A prefab shower kit (think: one-piece plastic or fiberglass) is the budget hero. It usually costs $500 to $1,500 and can be installed in a day. It’s like the “instant ramen” of showers—functional, no frills.

If you want custom tile and a curbless walk-in design, you’re looking at $2,500 to $6,000 for materials and labor. That’s the “artisanal sourdough” route: beautiful, but you’ll be waiting longer and spending more. You’ll also need to pay for a waterproofing membrane, which is like a raincoat for your walls—boring but crucial.

Demolition and Prep: Out with the Old

You can’t just plop a shower into a half bath without some wrecking-ball energy. Maybe you’ll need to rip out a vanity or move a toilet. Demo costs run about $500 to $1,000, depending on how much you love swinging a sledgehammer.

Adding a Shower to a Half Bath in Basement: Ultimate Upgrade Guide

If you’re handy, you could do this yourself and save the cash. Just be prepared for dust, swearing, and finding out your walls are made of cardboard and hope. Fun fact: half baths often have no ventilation, so you’ll likely need to add an exhaust fan too—another $300 to $800.