The hidden costs of a new bathroom
The suite in the showroom is the cheapest part of the job. Here is what a new-bathroom quote leaves out — and how to work out your true total before you commit.
What the sticker leaves out
A bathroom needs a plumber, a tiler, often an electrician and sometimes a plasterer — and labour typically makes up the largest share of the bill, well above the cost of the suite itself. Day rates and job length are where quotes quietly diverge.
Stripping the old room, lifting tiles and removing the debris is chargeable work, and skip hire or waste-transfer fees are usually billed on top rather than folded into the headline price.
Wet areas often need tanking, backer boards or a new floor screed before a single tile goes on. It is largely hidden once finished, so it is easy to leave out of a budget — but skipping it stores up far bigger costs later.
Tiles are quoted per square metre, but adhesive, grout, trims, sealant and the labour to set them are separate lines — and wastage on cuts means you buy more tile than the wall area suggests.
Relocating a soil pipe, adding a shower circuit, or moving the basin more than a few inches turns a swap into structural work, and that re-routing is charged well above a like-for-like replacement.
Rotten joists, failed old pipework, damp or non-compliant wiring are common once the walls are open. They are rarely in the original quote and are typically billed as extras when discovered.
Why the suite price misleads
A showroom prices the bath, basin, toilet and taps — the visible, comparable items. But that suite is often a minority of the finished bill; the labour, rip-out, waterproofing, tiling and any re-routing of pipes and cables usually add up to far more. Because one fitter's quote bundles waste disposal and tanking while another lists them as extras, two quotes that look close on paper can be thousands apart once the job is done. Comparing on the suite price, or on a headline 'from' figure, is exactly the mistake that turns a bargain into the dearer choice.
How to work out your true total
Start from the suite and fittings, then add labour for each trade across the likely number of days, the rip-out and waste disposal, waterproofing and substrate prep, tiling with adhesive, grout and wastage, and a realistic contingency for the faults a strip-out tends to uncover. Add any re-routing of plumbing or electrics you actually want. For a sourced, dated figure on a specific specification — with each line graded by how well we can verify it — run it through the TrueTotal calculator rather than trusting a round number.
How we stay honest about this
If you buy or book through a partner link we may earn a referral fee at no extra cost to you, and it never changes which option we rank first or the figures we show. Placement can't be bought — the order is decided by the true total and verifiable quality, never by who pays us. See our affiliate disclosure and methodology.
Rules of thumb only get you so far. Run a specific option through the calculator for a sourced, dated, confidence-graded figure.
Frequently asked
Because the suite is only the visible part. Labour across several trades, rip-out and waste, waterproofing, tiling and any moved plumbing or electrics typically add up to far more than the bath, basin and toilet themselves.
The most common are faults found once the walls and floor are opened up — rotten joists, failed old pipework, damp or non-compliant wiring — plus waste disposal, waterproofing and the extra cost of relocating plumbing or electrics. Keep a contingency for them.
Only by the true total — the suite plus every line each fitter includes or leaves out for your actual specification. Comparing headline 'from' prices is unreliable because different quotes bundle rip-out, waste and waterproofing differently.
Related guides
See the big picture in the Hidden-Fee Index — how much the advertised price hides across every category — or browse all buyer guides.
This guide explains typical, well-known cost mechanisms for general education — actual fees vary by operator, destination and date. Confirm live prices, fees and your consumer rights with the retailer and official sources before you buy. TrueTotal provides guidance, not financial or legal advice.