Re-plumbing a house Cost Calculator
A full re-plumb in 2026 UK costs £4,500–£9,500 for a typical 3-bed semi, £8,000–£18,000 for a 4–5 bed detached. Plastic push-fit (PEX) is now the default — it cuts labour by around 30% versus copper and is what 8 in 10 reputable installers…
Open the calculator →Price re-plumbing a house in 30 seconds
2 steps, using the figures from our cost guide.
How this calculator works
Every figure in this calculator is the one published in the cost table on our re-plumbing a house guide. Pick the option that matches your job and the calculator returns that published range, adjusted for your region - it does not model anything the guide does not already say.
That is deliberate. A calculator whose rates drift from the page it sits under is worse than no calculator, because two numbers on the same site disagree.
What it cannot know: access, the condition of what is already there, and anything structural. Those are what separate three real quotes from each other.
Published re-plumbing a house costs (2026)
| Option | Typical 2026 cost | Notes |
|---|---|---|
| 1-2 bed flat | £2,800–£5,200 | |
| 2-bed terrace | £3,500–£6,800 | |
| 3-bed semi | £4,500–£9,500 | |
| 4-bed detached | £7,500–£14,000 | |
| 5-bed / 2-bath detached | £10,000–£18,000 |
These are the figures from our re-plumbing a house cost guide.
Re-plumbing a house calculator — FAQs
It uses the same published figures as the cost guide it sits under, adjusted for your region. It is a budgeting estimate, not a quote - only a site visit produces one of those.
Related cost guides
- Re-plumbing a house cost guide — The full price guide
- All plumbing services — Browse the hub
- All BestBuilders services — Every trade we cover
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