Buyer guide · Updated August 2026

What Should a Bathroom Quote Actually Include?

A one-line quote, one number for 'supply and fit bathroom', tells you almost nothing about what you're actually paying for. A proper bathroom quote should read like a build sequence, each stage of the job itemised so you can see exactly where the money goes and what would change if you altered the specification. Here's what a genuinely thorough quote should cover, line by line.

Key takeaways

  • A proper quote is itemised: strip out, first fix, tanking, tiling, second fix, snagging
  • Tanking and Part P electrical certification should always be explicitly stated
  • Provisional sums should be clearly labelled as estimates, not fixed costs
  • Stage payments are normal, full payment upfront before work starts is not

Strip out and waste removal

The first line should cover removing the existing suite, tiling and, where relevant, flooring, along with disposal via skip or licensed waste carrier. This typically costs £300-£700 depending on room size and how much needs stripping back. If a quote doesn't mention waste disposal at all, ask where the old bathroom is actually going, since unlicensed disposal is both illegal and a cost that will otherwise appear later as an add-on.

First fix plumbing and electrics

First fix covers running new pipework and cables to their final positions before walls and floors are closed up, including any pipe or cable relocation for a changed layout. Electrical first fix in a bathroom is notifiable work under Part P of the Building Regulations, meaning it must be certified, either by a registered electrician self-certifying the work or via building control sign-off. A quote should state clearly who is doing this work and that a certificate will be issued, since this documentation matters at resale.

Tanking and waterproofing

Any area that will see water, shower enclosures, wet room floors, areas behind baths, should be tanked before tiling begins. This is easy to miss on a brief quote because it's invisible once finished, but it should appear as its own line with the system named. If tanking isn't mentioned at all, ask directly, because it's one of the most consequential omissions in a cheap quote.

Tiling, labour and materials separated

Tiling should be broken into labour (per square metre) and materials (tiles, adhesive, grout, trims), ideally with the tile format specified since this affects both. If you're supplying your own tiles, the quote should reflect labour-only pricing and state clearly what happens if there's a shortfall in your order.

Second fix and the finished suite

Second fix covers fitting the actual suite, WC, basin, bath or shower, taps, shower valve, extractor fan, lighting and any accessories, once walls and floors are finished. This section should list each item individually with its cost, whether it's a specific model you've chosen or an allowance figure if you haven't decided yet. Allowance figures (sometimes called provisional sums) should be clearly marked as estimates that will be adjusted once you've chosen final fittings.

Snagging, sign-off and stage payments

A proper quote should mention a final snagging visit, checking silicone lines, grout finish, door and drawer alignment and functionality of every fitting, before the job is signed off as complete. It should also set out the payment structure clearly, typically a deposit on booking, a materials payment when goods arrive, and a final balance on completion, rather than requesting full payment upfront.

VAT treatment should also be stated explicitly, either included in the figures shown or added separately, so there are no surprises on the final invoice.

Red flags in a quote

Be cautious of quotes that combine everything into a single figure with no breakdown, that don't mention electrical certification for a bathroom that clearly needs it, that don't reference tanking anywhere, or that ask for a large deposit or full payment before work starts. A written guarantee and evidence of being fully insured should also be standard, not something you have to ask for.

Quick questions

Should VAT be included in the quote total?

It should be clearly stated either way, included in the headline figure or added separately. A VAT-registered firm must charge 20%, so ask directly if it isn't obvious.

What's a provisional sum and why does it matter?

It's an estimated allowance for an item you haven't finalised yet, such as a tap or light fitting. It should be clearly labelled as provisional so you know the final invoice may adjust once you've made your choice.

Is a written guarantee standard on a bathroom quote?

It should be. A reputable fitter will provide a written guarantee on their work as a matter of course, not something you need to negotiate for separately.

Why does electrical certification matter for a bathroom?

Bathroom electrical work is notifiable under Part P of the Building Regulations because of the water risk. Proper certification protects you and matters if you come to sell the property.

How much deposit is reasonable to pay upfront?

Typically 10-25% on booking, with further payments tied to materials arriving and the job's completion. Full payment upfront is not standard practice and shouldn't be requested.