Short answer: Keeping the layout and adding accessible fittings typically costs about £2,000 to £5,000. A bath to walk-in shower conversion from a specialist mobility supplier starts from about £6,000, while a small wet room under 4m² is about £4,000 to £6,000 on general trade figures. Specialist mobility wet rooms cost more, and VAT relief or a council grant can reduce the bill.
Most homes in Scotland have a fairly small bathroom, often with a bath and an overhead shower. When getting in and out of that bath becomes difficult, the question is whether the room can be made safe and comfortable without a huge bill. In most cases it can. A small room simply needs careful planning, because every fitting has to earn its place.
This guide is about converting the bathroom you already have. If you are thinking of adding a new bathroom elsewhere in the house, that is a different job with different costs.
Typical costs for converting a small bathroom
These are typical UK supply and fit ranges from published trade and specialist sources. They are a guide rather than a quote, and Scotland often sits at or below the lower end.
| Type of conversion | Typical cost | What it usually includes |
|---|---|---|
| Same layout with accessible fittings | About £2,000 to £5,000 | New suite, comfort height toilet, lever taps, grab rails |
| Bath to walk-in shower (low tray) | From about £6,000 | Specialist mobility supplier figure, including seat and rails |
| Small wet room under 4m² (general trade) | About £4,000 to £6,000 | Tanked floor laid to a drain, shower, screen |
| Specialist mobility wet room | About £8,000 to £14,000 or more | Level access throughout, seat, rails, specialist fittings |
| Full renovation with a new layout | About £5,000 to £12,000 | Moved fittings, new tiling and electrics |
Labour is a large part of any bathroom job. Plumbers and bathroom fitters typically charge about £200 to £350 a day, and electricians about £150 to £300 a day.
Swapping the bath for a walk-in shower
This is the most common change in a small mobility bathroom. Stepping over the side of a bath is where many people first feel unsafe, so removing that step makes an immediate difference.
A typical conversion involves taking out the bath, adjusting the waste pipe, fitting a low shower tray or a level floor, waterproofing and finishing the walls, then adding a screen, a thermostatic shower, a seat and grab rails. Our disabled walk-in showers are designed around exactly this kind of swap.
Low tray or fully level floor?
A low tray is usually quicker and cheaper and suits people who can walk with some support. A fully level floor, where the shower area is flush with the rest of the room, suits wheelchair users and people who use a shower chair. It costs more because the floor has to be built to fall towards the drain and the whole area must be waterproofed. If mobility is likely to decline, choosing level access now can avoid paying for a second conversion later.
Choosing the shower itself
A thermostatic shower keeps the temperature steady, which matters for anyone who reacts slowly to a sudden change. A handheld head on a riser rail lets you shower while seated and makes it easier for a carer to help. Our mobility showers page explains the options.
Space-saving fittings that make a small room work
In a compact bathroom the right fittings can free up surprising amounts of space.
- Wall-hung basin. Leaves space underneath for knees or a wheelchair footplate, and can be fitted at the right height.
- Wall-hung or compact toilet. A wall-hung toilet can be set at a comfortable height and makes the floor easier to clean. A short projection toilet saves floor space.
- Folding shower seat. Folds against the wall when not in use, so the shower area stays clear.
- Hinged or folding screens. Half height or folding screens let a carer help without getting soaked. A weighted curtain is another option.
- A door that does not swing into the room. An outward opening or sliding door keeps floor space clear and makes it easier to reach someone who has fallen.
- Recessed storage. Niches in the wall or a boxed in cistern shelf give storage without anything sticking out.
- Contrasting colours. A toilet seat, rails and floor that contrast with the walls help people with sight loss or dementia.
For a step by step approach to layout, see our guide on how to design a bathroom for a disabled person.
What affects the price in a small room
A small room uses fewer materials, but it does not always mean a small bill. Many costs are fixed whatever the size of the room, such as the strip out, plumbing, electrics and waterproofing. The main things that move the price are:
- The floor. Forming a level shower area is more involved on some floors than others.
- Moving the waste. Keeping the shower drain close to where the bath waste was helps.
- Tiling or wall panels. Waterproof wall panels are often quicker to fit than tiles and have fewer grout lines to clean.
- Electrics. An electric shower, extractor fan or new lighting all need a qualified electrician.
- The specification. Built-in seats, heated towel rails and designer finishes add up.
- Location. London and the South East typically cost 25 to 40% more than the ranges above.
If you would like to compare these figures with a standard refit, our guide to small bathroom renovation costs covers general prices.
Paying less: VAT relief and grants
VAT relief
Adapting a bathroom, shower room or wet room in the home of someone who is chronically sick or disabled can be zero rated for VAT, where the work is necessary because of their condition. It is not means tested, but it does not cover people who are simply older or only temporarily injured. If you are 60 or over, grab rails, bath lifts, built-in shower seats and walk-in baths with sealable doors can be charged at 5% VAT when the same installer supplies and fits them.
Grants in Scotland
In Scotland, help comes through your council's Scheme of Assistance, not the Disabled Facilities Grant used in England, Wales and Northern Ireland. Councils must give at least 80% of the eligible cost to adapt a bathroom so a disabled person can use it, and 100% for people receiving certain benefits such as Pension Credit guarantee credit or Universal Credit. An occupational therapist (OT) assessment through your Health and Social Care Partnership is normally the first step. Eligibility varies, so check with your council or HMRC before relying on either form of help.
How a typical conversion runs
- Assessment. An OT can advise on what you need now and later. If you are paying privately you can still use their advice to shape the design.
- Design. A survey and 3D design show how the shower, toilet and basin will fit and whether there is room to turn or transfer.
- Quote. A written quote should list every product and every trade, plus VAT.
- Installation. A standard bathroom typically takes 5 to 10 working days. Because our own team covers plumbing, electrics, joinery, flooring and waste removal, many of our mobility installations take as little as 3 days.
For a broader look at prices, including walk-in baths and larger wet rooms, read our guide to mobility bathroom costs.
Wondering what your small bathroom could become? We will create a free 3D design of the room and give you a no-obligation quote. Request your free design.
Frequently asked questions
Can a very small bathroom become a wet room?
Often, yes. Small wet rooms under 4m² are common, and they can actually feel bigger once the bath and shower tray are gone. A survey will confirm whether the floor and drainage are suitable.
Should I keep the bath?
If you or the person you care for still enjoys bathing and can get in safely with aids, a walk-in bath or bath lift may suit. If climbing in is already a struggle, a walk-in shower is usually safer and easier in a small room.
Do I need a building warrant to swap a bath for a shower?
Replacing a bathroom in a one or two storey house usually does not need a building warrant in Scotland. Structural changes, a change to how wastewater is discharged or work in a house with three or more storeys generally does. Check with your council's building standards team.
How long does a bath to shower conversion take?
A standard bathroom refit typically takes 5 to 10 working days. Many of our mobility installations take as little as 3 days because we do not wait for outside trades.
