Tub-to-Shower Conversion: Is It Right for Your Bathroom?

Converting a bathtub to a walk-in shower is one of the most requested bathroom upgrades we see, and for good reason — most households use the shower daily and the tub rarely, if ever. But it's not automatically the right move for every bathroom, and getting it right involves more than swapping fixtures. Here's what the conversion actually involves and how to know if it fits your home.

Why people convert

The reasons cluster around three things: daily usability, a more modern look, and planning ahead. A curbless walk-in shower is easier and safer to step into than climbing over a tub wall, which matters both for young families and for homeowners thinking about aging in place. It also opens up a small bathroom visually and lets you reclaim floor space the tub was eating up.

What's actually involved

This isn't a cosmetic swap. The drain typically needs to move or be reconfigured for the new shower pan, the plumbing rough-in changes, and — most importantly — the entire wet area needs fresh, properly installed waterproofing behind the tile, since a shower sees far more sustained water exposure than a tub. If you're going curbless, the subfloor often needs to be modified to create the slight slope a zero-threshold pan requires.

• New drain location or reconfigured plumbing rough-in
• Fresh waterproof membrane and backer board behind all shower tile
• Shower pan or tile floor sloped correctly to the drain
• Glass enclosure or curtain, and often a bench or niche
• Subfloor modification if you're going curbless

The resale consideration

One caveat worth thinking through: if the bathroom you're converting is your home's only full bathroom, most agents recommend keeping at least one tub somewhere in the house, since some buyers — particularly families with young kids — specifically look for one. In a primary suite with a second full bathroom elsewhere, converting is rarely a resale concern and is often a selling point on its own.

Curbless and accessible design

If accessibility is part of your motivation, a true zero-threshold pan with a linear drain gives the cleanest, safest entry — no curb to step over, no lip to catch a foot or a wheelchair wheel. It's a small design decision that pays off for years, whether you need it today or you're planning for later.

What drives the cost

Price depends mainly on how far the drain has to move, whether you're going curbless (which adds subfloor work), the tile you choose, and the size and style of the glass enclosure. A straightforward conversion that keeps the drain roughly in place costs meaningfully less than one that relocates plumbing and reworks the subfloor.

Thinking about converting your tub?

A1 Builders handles tub-to-shower conversions across LA and Orange County with proper waterproofing and clean tile work every time. Reach out for a free consultation and we'll tell you honestly whether a conversion makes sense for your bathroom.