Choosing a walk-in shower or bathtub comes down to space, who uses the bathroom, and how much upkeep you want, not which one is "better". A bath-to-shower conversion typically costs £500 to £2,500, while a full mid-range bathroom renovation runs £4,500 to £9,000. You almost never need planning permission for an internal change like this, but Building Regulations still apply to the plumbing, drainage and electrics, and bathrooms fall under Part P for anything new on the electrical side.
Walk-in shower or bathtub is one of the first questions homeowners face once a bathroom renovation is on the cards. Both can look brilliant. Both can also be the wrong choice for your household if you pick on looks alone.
This guide compares them properly, cost, space, upkeep and the regulations that quietly apply either way, so you can choose with confidence before any tiles get ordered.
Start with how the room gets used, not how it looks in a showroom. Who's using it, how often, and how much space have you actually got? A five-minute answer to those questions saves a lot of second-guessing later.
A walk-in shower opens a room up. No high sides to climb over, no bulky enclosure eating floor space, just a clean run of tile and glass. It's quicker for busy mornings, easier to keep accessible as you get older, and it tends to make a compact bathroom feel bigger than it is.
A shower doesn't just save time, it changes how a small bathroom feels the moment you walk in.
The trade-off is upkeep on the glass, hard water leaves marks fast, and the waterproofing underneath has to be done properly. Skimp on the tanking and drainage fall, and water finds its way where it shouldn't. That's not a DIY-YouTube job, it's where a fitter's experience actually earns its money.
A bath still wins for households with young children, and for anyone who genuinely wants to soak rather than rinse. It's also the fixture most likely to matter to a family buyer down the line, particularly if it's the only bath in the house.
The cost is space. A standard bath takes up more floor area than a shower tray, and a deep or freestanding tub can be harder to keep clean in the corners. If your household barely uses it, that's a lot of square footage for occasional use.
Converting an existing bath into a shower typically costs £500 to £2,500 depending on scope, from a simple screen-and-shower swap at the low end to a full walk-in enclosure with new tiling at the top, based on current UK trade cost guides. A full mid-sized bathroom renovation, new suite, tiling, plumbing and electrics, generally runs £4,500 to £9,000.
Don't compare the shower's price tag with the bath's price tag on their own. Plumbing changes, waterproofing, tiling and labour usually cost more than the fixture itself, whichever you choose. Get the whole job quoted, not just the headline item.
| Walk-in shower | Bathtub | |
|---|---|---|
| Best for | Quick routines, accessibility, small rooms | Families, long soaks, resale in family homes |
| Typical cost | £500–£2,500 (conversion) | £850+ supply and fit |
| Upkeep | Glass needs regular wiping | Depends on shape, deep tubs take more reaching |
| Space needed | Lower | Higher |
Almost never. Internal bathroom changes, including replacing a bath with a shower, aren't classed as "development" under UK planning law, so planning permission isn't usually required. That changes if you're cutting a new external window, moving waste pipework outside, or working on a listed building, in which case it's worth a call to your council first.
Planning permission and Building Regulations are different things. A like-for-like swap, same position, same pipework, usually doesn't need Building Regs approval. But as soon as you add a new shower circuit, move pipework, or strengthen a floor for a heavier bath, it does.
Like-for-like replacement of a bath, shower or basin generally doesn't need Building Regulations approval. New plumbing, drainage or electrical circuits usually do. Source: LABC guidance via Horsham District Council.
Bathrooms are treated as a "special location" under Part P of the Building Regulations, because water and electricity close together is genuinely dangerous. Any new circuit for an electric shower, extractor fan or lighting near the bath or shower must be installed or certified by a registered electrician working to BS 7671. Source: GOV.UK Approved Document P.
In a compact room, a walk-in shower with a glass screen usually reads as more open than a boxed-in bath. But a smaller tub can still work if you measure properly first, door swing, basin position, storage and drain location all affect what actually fits. Don't choose a fixture from how it looks in a showroom display, a "compact" bath can feel very different once it's sat in your actual four walls.
Neither option is maintenance-free. Glass shower screens show water spots quickly and need a wipe-down a few times a week to stay sharp. Baths are usually easier day to day, but a deep or freestanding tub takes more effort to reach into the corners. The finish you choose, smooth acrylic versus textured stone resin, for example, matters more for cleaning time than which fixture you picked.
It depends on the property and the likely buyer. In a family home, keeping at least one bathtub somewhere in the house tends to matter to buyers with young children, even if it's not the main bathroom. If you've got more than one bathroom, a shower in one and a bath in the other often covers both bases without compromising either room.
If the room's big enough, yes, and it's the most flexible option. Just don't cram both in at the expense of clear floor space and storage. A bathroom stuffed with fixtures is harder to use than a well-planned single-focus room, however nice each individual piece looks on its own.
We're Overstones, based in Congresbury, North Somerset, and bathrooms are one of the jobs we do most often, from a straightforward bath-to-shower swap through to full strip-out renovations.
Being a small team, two to five of us depending on the job, means the person who measures your bathroom is the same person on site fitting it. Nothing gets lost between a salesperson, a designer and a fitting team who've never met you. Fixed pricing and one point of contact throughout.
See our bathroom and general building work → | Planning a kitchen too? Read our kitchen renovation checklist →
Related: The UK Kitchen Renovation Checklist: Planning, Building Regs and What to Really Expect →