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Hiring a plumber

How to Compare Plumber Quotes

Two quotes for the same job can be hundreds of pounds apart. Usually it's because they're not really quoting for the same thing.

3 min read · Updated October 2026

Close-up of a plumber's tool bag with fittings and hand tools

Describe the job the same way to everyone

Quotes are only comparable if every plumber is pricing the same work. Describe the job clearly, send the same photos and measurements, and say who will supply the fittings. If you change your mind about something, tell everyone.

Compare the scope, not just the total

Look at what each quote includes. One may cover new isolating valves, flexible connectors and making good; another may assume everything goes smoothly and charge extra if it doesn't.

  • Exactly what will be removed, fitted and connected
  • Which parts are included, and their quality
  • Whether making good, tiling or other finishing work is included
  • Disposal of old fittings and waste
  • How unexpected problems will be priced

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Fixed price or hourly rate?

For defined jobs, a fixed price is easier to compare and budget for. For diagnosis or unpredictable work, an hourly rate may be fairer – but ask for an estimate of how long it will take, and whether there's a minimum charge.

Fixed price or hourly rate
Fixed priceHourly rate
Best forClearly defined jobsDiagnosis and unpredictable work
Budget certaintyHighLower
Risk if it takes longerPlumber'sYours

Fixed price or hourly rate

Beyond the price

Consider availability, how clearly the plumber explained the job, their insurance, any guarantee and reviews from previous customers. The cheapest quote isn't always the best value, and the most expensive isn't always the best job.

Common questions

Why do plumbing quotes vary so much?

Mostly because of scope, parts and assumptions about what will be found once work starts. Ask each plumber to itemise their quote.

Should I always choose the cheapest quote?

Not necessarily. Compare what's included, the plumber's experience and the guarantee as well as the price.

Can I negotiate on a plumbing quote?

You can ask, especially if you can be flexible on dates or group several jobs together.

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