Compare bathroom quotes, line by line

Bathroom quotes often focus on visible products: the bath, basin, toilet and tiles. Much of the important work is hidden underneath. Suitable preparation, waterproofing and pipework can be described in a few words or omitted entirely, even when they affect the finished room considerably.

State whether you are keeping the layout. Moving a toilet, changing a bath to a shower or creating a wet room can alter drainage, construction and installation tasks. Give every installer the same layout and product information before comparing totals.

Separate labour-only offers from supply-and-fit refits. If you buy fittings, decide who checks compatibility and deals with damaged deliveries. A shower arriving at the house does not mean every valve, waste or installation accessory is included. Clear responsibility is more useful than a vague promise of a complete bathroom.

What a complete bathroom quote should include

• Room and layout — Identify the bathroom, fixture positions and whether the work is a complete strip-out or selected replacements. Keep layout changes visible.
• Fittings schedule — List sanitaryware, taps, shower, tray, screen and concealed components. Product references make it easier to compare the same installation.
• Supply responsibilities — State who buys fittings, wastes, valves, adhesives, grout and finishing accessories, including items absent from the main product box.
• Strip-out — Describe removal of tiles, floor finishes, fittings and redundant pipework. Confirm disposal and protection for the rest of the home.
• Walls — Specify repairs, replacement boards and preparation before tiling. Existing tiles coming off can reveal work not visible at the inspection.
• Floor condition — Agree how movement or damaged flooring will be assessed and priced. Distinguish a stated repair from an open-ended extra.
• Waterproofing — Name the system and areas covered. Tiles and grout are not a substitute for a clear underlying waterproofing specification.
• Plumbing and drainage — Include supply changes, isolation valves, wastes and access for maintenance. Explain any alterations to the soil connection.
• Shower compatibility — Check pressure, flow and the chosen shower system before installation. Identify assessments or service changes still required.
• Electrics and ventilation — Specify fans, lights, controls and heating connections with appropriate testing. Routine replacement is not automatically a notifiable new circuit.
• Tiling and decoration — Agree tiled areas, tile format, trims, grout, sealant and paint. Clarify any limit on the tiling work included.
• Handover — Set out testing, snagging, waste clearance and care instructions, including when newly installed surfaces can safely be used.

What's often left out — and what it can cost

A small en-suite, a like-for-like family bathroom and a high-end wet room are distinct references. The saved guide categories include example sizes and finish levels. Match the room and construction rather than treating every bathroom total as directly equivalent.

There are no standalone bathroom benchmarks for tanking, concealed floor repairs, a new fan or an individual fixture move. Those gaps need written project prices. Do not turn a whole-room reference into an invented price for one missing task.

Supply-and-fit ranges do not represent labour alone. Homeowner-supplied products, difficult access and a changed layout can all alter what the installer is undertaking. Area-based references are alternatives to whole-room guides, not additional charges for the same room.

An illustrative bathroom comparison

The example creates a follow-up list, not a technical assessment. Ask Quote B about waterproofing and Quote C about the floor-repair limit. Neither a tick nor a low total establishes that a proposed wet-room design is suitable for your property.

Questions to ask each trader

• What preparation and waterproofing system will you install, and which areas does it cover?
• Have you checked the products, water supply and drainage for compatibility?
• How will concealed damage be evidenced, priced and approved before additional work?
• Is VAT included in labour, supplied products and the final payable total?
• What does the deposit cover, and which completed stages trigger later payments?
• When will the bathroom be usable again, and what testing and snagging happen first?

Your bathroom questions

Give every installer the same layout, fitting schedule and finishing requirements. Settle waterproofing and preparation questions while you can still revise the proposal, rather than after the old room is stripped.