Bathroom Renovation Cost UK 2026: What You'll Actually Pay

Bathroom renovations are one of the most common home improvement projects in the UK. They're also one of the easiest to get wrong on budget, because the cost difference between "swap the suite and retile" and "move the toilet to a different wall" is enormous. That second scenario involves rerouting the soil pipe (the large 110mm waste pipe that connects the toilet to the main drain), and it can add £2,000-£3,000 to the bill on its own.

In short: A budget bathroom refresh costs £2,500-£4,000. A mid-range renovation with decent fittings and full retiling runs £5,000-£9,000. A high-end bathroom or wet room conversion reaches £12,000-£25,000+. The single biggest factor in cost is whether you keep the existing layout or move things around. Keeping everything where it is saves 30-40% because you avoid replumbing waste runs and rerouting the soil pipe.

Costs based on Checkatrade, MyJobQuote, and Rated People data plus MyBuildAlly quote analysis, Q1 2026. Your actual costs will vary based on specification, location, and existing condition.

Cost by tier: what you get for your money

Here's what each budget level looks like in practice for a standard family bathroom (roughly 2.4m x 1.8m).

Budget: £2,500-£4,000

Like-for-like replacement. New toilet, basin, and bath in the same positions. Basic sanitaryware from a builders' merchant. Retile the splash areas (not full floor-to-ceiling). Refresh the silicone and paint the walls. This is the "functional upgrade" - it'll look noticeably better but you're not changing the room.

Mid-range: £5,000-£9,000

New suite with better quality fittings (wall-hung toilet, thermostatic shower, semi-recessed basin). Full wall and floor tiling. New heated towel rail. Upgraded extractor fan. Potentially a shower enclosure or over-bath shower screen. Maybe some minor plumbing changes to optimise the layout. This is where most homeowners end up.

High-end: £12,000-£25,000+

Full remodel. Walk-in shower or wet room conversion. Underfloor heating. Wall-hung toilet and vanity unit. Large format porcelain tiles. Niche shelving. LED lighting with dimmer control. High-end brassware (think Crosswater or Hansgrohe rather than B&Q own-brand). Possibly moving the layout entirely, which means new waste runs, soil pipe work, and a longer timeline.

Itemised cost breakdown

This is where quotes get vague. Here's what each element actually costs for a mid-range family bathroom renovation.

Total mid-range: £2,900-£11,100 for materials and labour combined.

The spread is wide because "mid-range" means different things to different people. A £5,000-£9,000 total is realistic for most standard family bathrooms with decent (not luxury) fittings.

Labour vs materials: the split

For a typical bathroom renovation, expect labour to account for 40-50% of the total cost. Bathrooms are labour-intensive because they involve multiple trades working in a small space.

This split matters when you're comparing quotes. If one quote is significantly cheaper, check whether the labour element is lower (possibly cutting corners on time) or whether they've specified cheaper materials. A detailed breakdown should make this clear.

Why keeping the existing layout saves you 30-40%

The most expensive thing you can do in a bathroom renovation is move the toilet. The soil pipe (that large 110mm pipe) connects the toilet to the main soil stack or underground drain. Moving the toilet means extending or rerouting this pipe, which often involves lifting floorboards, running pipe through joists, and maintaining the correct fall (gradient) for waste to flow properly.

Moving the soil pipe: £800-£2,500 depending on distance and access.

Moving basin or bath waste runs is cheaper (£200-£500 per fitting) because these are smaller 40mm pipes. But it still adds up.

If you can design your new bathroom around the existing waste positions, you avoid all of this. The plumber's quote should clearly state whether any waste rerouting is included and what it costs.

Wet room vs standard bathroom

Wet rooms (a fully waterproofed, level-access shower area with no tray or enclosure) have become increasingly popular. They look great and they're practical for accessibility. But they cost more.

A wet room conversion typically adds £2,000-£4,000 on top of a standard bathroom renovation. The extra cost comes from the tanking (waterproof membrane applied to the entire floor and walls), the gradient former (a shaped board that creates the fall towards the drain), and the specialist drain fitting.

The floor also needs to be structurally capable of taking the tanking system. On a concrete ground floor, this is straightforward. On a timber first floor, you may need additional support or a lightweight tanking system, which adds cost.

En-suite, main bathroom, and downstairs cloakroom

Room size and scope vary significantly between these three.

A downstairs cloakroom is a relatively quick project (2-3 days for a like-for-like refresh). A main bathroom is a week minimum, usually two.

What your bathroom quote should include (and what's commonly missing)

This is where most budget overruns originate. A bathroom quote should cover every stage of the work. Our bathroom fitter quote checklist covers this in full detail, but here are the items most commonly excluded or left vague.

Commonly included:

• Strip out of old bathroom
• Plumbing first and second fix
• Suite installation
• Tiling (but check: walls only, or walls and floor?)

Commonly missing or vague:

• Waste removal and skip hire - someone has to get rid of the old suite, tiles, and rubble. Budget £150-£350
• Making good - replastering walls after tile removal, patching damaged plasterboard, levelling the floor. £300-£800
• Ventilation upgrade - if your existing extractor fan doesn't meet current Part F requirements (or there isn't one), you'll need a new one fitted. £150-£350 including supply
• Underfloor heating - if you want it, it needs specifying upfront. Electric mat systems cost £300-£600 supply and fit for a bathroom-sized area
• Decoration and painting - ceiling, any non-tiled walls, door, and frame. £150-£400
• Toilet connection and soil pipe work - if the existing connection is old or in poor condition, it may need replacing. This is sometimes treated as an extra
• Electrical certification - your electrician should provide a Part P certificate or Minor Works certificate. If they don't mention this, ask

If any of these are excluded from your quote, you need to budget for them separately. They're not optional extras - they're essential parts of the job. See our hidden costs guide for more on this.

Building regulations: the bits you can't skip

A bathroom renovation doesn't usually need planning permission. But it does need to comply with building regulations in several areas.

Electrical work: Part P

All electrical work in a bathroom is notifiable under Part P of the Building Regulations. This covers the installation of extractor fans, lighting, heated towel rails, and shaver sockets.

Bathrooms are divided into zones that dictate what electrical equipment can be installed where. Zone 0 is inside the bath or shower tray. Zone 1 is directly above the bath or shower to 2.25m height. Zone 2 extends 0.6m beyond Zone 1. Your electrician needs to know this inside out - and all bathroom circuits must have RCD protection (a safety device that cuts the power if it detects a fault).

Most electricians are registered with a competent person scheme (like NICEIC or NAPIT), which means they can self-certify their own work without a separate building control application.

Ventilation: Part F

If your bathroom doesn't have an opening window, it must have mechanical ventilation (an extractor fan). Even if it does have a window, an extractor fan is still best practice and most local authorities expect one.

The minimum extraction rate for a bathroom is 15 litres per second (intermittent) or 8 litres per second (continuous). In practice, this means a decent extractor fan with a humidistat (a sensor that detects moisture and runs the fan automatically), not the cheapest unit from Screwfix.

Drainage and plumbing

New drainage connections or significant alterations to existing drainage need to comply with Part H. If you're checking the plumbing and drainage work, make sure waste pipes have the correct fall, traps are properly fitted, and any new soil pipe connections are tested.

Regional price variation

Labour rates vary significantly across the UK. These multipliers give you a rough adjustment from the national average costs quoted above.

A £7,000 bathroom renovation in the Midlands could cost £8,500-£9,000 in London. Material costs are broadly similar everywhere - it's the labour that drives the regional difference.

For a full regional breakdown across all project types, see our UK building costs complete guide.

How long does a bathroom renovation take?

During this time, you won't have a working bathroom. If it's your only bathroom, plan ahead. A portaloo for the garden costs around £80-£120 per week (not glamorous, but practical). Alternatively, see if the plumber can get the toilet reconnected each evening during the first week - some will, some won't.

The timeline also depends on lead times for materials. Tiles from stock are available in days. A specific vanity unit from a European manufacturer might take 4-6 weeks. Order everything before the strip-out starts.

How to keep bathroom renovation costs down

1. Keep the layout - moving fittings to new positions is the single biggest cost driver. Design around existing waste positions wherever possible
2. Choose tiles wisely - a £15/m² porcelain tile looks almost as good as a £60/m² one once it's on the wall. Large format tiles (fewer grout lines) can look more expensive than they are
3. Supply the suite yourself - buy the toilet, basin, bath, and taps yourself and pay the fitter for labour only. You'll often save 15-20% vs their supply-and-fit price
4. Don't over-tile - full floor-to-ceiling tiling is the most expensive option. Tiling the wet areas and painting above is a legitimate cost-saving that still looks good
5. Get three quotes with identical scope - make sure every quote covers the same items so you're comparing like with like. Our bathroom fitter quote checklist helps you do this

Is your bathroom quote right?

A bathroom renovation quote should read like a project plan, not a one-line price. If it says "supply and fit new bathroom - £6,000" and nothing else, you have no idea what's included. MyBuildAlly analyses your bathroom quote against thousands of similar projects, flags anything that's missing, and tells you whether the price is fair for your area.

Check your bathroom quote free →

Sources

• Checkatrade Bathroom Cost Guide - trade cost benchmarks, 2025/2026
• MyJobQuote Bathroom Renovation Costs - itemised pricing from UK tradespeople
• Rated People Bathroom Costs - average costs from rated tradespeople
• Victorian Plumbing Bathroom Cost Guide - sanitaryware and fitting costs
• Which? Bathroom Renovation Guide - consumer cost comparisons
• HM Government Approved Document Part P - electrical safety in bathrooms
• HM Government Approved Document Part F - ventilation requirements
• Analysis of residential bathroom quotes submitted to MyBuildAlly, January-March 2026