Gas Supply Replumbing Cost
£150–£800typical UK range. Last updated August 2026.
Replumbing a domestic gas supply typically costs £150–£800, averaging about £375 for a straightforward upgrade.
What each option costs
| Type | Typical cost | Notes |
|---|---|---|
| Replumb gas supply | £150–£800 | Typical project range |
| Boiler-relocation pipework | £400–£600 | Typical project range |
What affects the price
- Pipe length and diameter
- Concealed or exposed route
- Access and making good
What’s included
- Agreed pipe removal and replacement
- Pressure testing and commissioning by a Gas Safe engineer
Good to know
How long does it take? A straightforward upgrade typically takes half a day to a day; concealed or long runs can take longer.
Do I need one? Gas pipework must be altered by a Gas Safe registered engineer.
Before you book, read how to check a gas engineer is Gas Safe registered.
How to pay less
- Agree the route before work begins
- Confirm making good is included or priced separately
