Specify every supplied item
Choose the sanitaryware, taps, shower controls, screens, storage and finishes you want the fitter to price. Product dimensions and compatibility matter. Ask who orders each item, who checks it on arrival and how damaged or missing items affect the schedule.
Look behind the fittings
Ask about waterproofing, substrates, ventilation, plumbing changes and the condition of existing surfaces. Tiling over a suitable surface and rebuilding a damaged wall are different jobs. Have the contractor explain what can be confirmed before stripping out.
- State the tile area and tile size.
- Clarify waste connections and access panels.
- Include making good outside the bathroom if needed.
Check the labour model
A daily labour figure should represent the whole team required. A quote can instead use a fixed installation total; do not force it into invented days. The calculator’s split is a planning method, not evidence of how long your contractor should take.
Prepare for disruption
Agree when the bathroom will be unavailable, whether another toilet remains usable and what happens if a part is delayed. Keep changes documented after the quote is accepted. A clear specification is more valuable than an apparently precise budget built on guesses.
Sources & methodology
This page uses original budgeting guidance and transparent arithmetic. Example prices are chosen illustrations, not a survey of UK market prices. Replace them with written quotations.
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