Cost of Moving a Boiler in 2026 (UK)
Moving a boiler costs £400–£1,000 for a short move within the same room in 2026, and £1,500–£3,000 to relocate it to a different room, a kitchen cupboard, the garage or the loft. The price is driven by how far the gas, water and flue have to travel, whether new pipework must be chased into walls, and how much making-good and decoration follows. Here is the full 2026 breakdown and the Building Regulations you need to meet.
2026 cost of moving a boiler
| Type of move | Typical price (2026) | Time |
|---|---|---|
| Short move (same wall / same room) | £400–£1,000 | 0.5–1 day |
| Move to adjacent room | £1,000–£2,000 | 1–2 days |
| Move to loft or garage | £1,500–£3,000 | 1–2 days |
| Move combined with new boiler | £2,500–£5,000 | 1–3 days |
| Extra: chasing pipework into walls | +£150–£500 | — |
| Extra: making good & decoration | +£150–£600 | — |
What drives the price
The boiler itself is easy to unhook; the cost is in the runs. Every metre the gas supply, cold feed, heating flow and return, condensate and flue have to travel adds pipework and labour. A move to the far side of the house, or up into a loft, may need a longer gas run in bigger-bore pipe, a new flue penetration, and a condensate route to a suitable drain — all of which push the price toward the top of the range.
The hidden costs people forget
- Making good: lifting floors and chasing walls means plastering, filling and repainting afterwards.
- Flue position: the new flue must meet minimum distances from windows, doors and boundaries, which can rule out the spot you wanted.
- Condensate drainage: a condensing boiler needs a route to a drain; a long external run may need trace heating to avoid freezing.
- System flush: many engineers recommend a power flush when moving the boiler, adding £300–£600.
Building Regulations and who can do it
Moving a gas boiler is notifiable work that must be carried out by a Gas Safe registered engineer, who self-certifies compliance with the Gas Safety and Building Regulations and issues a certificate. Any new flue, gas run and condensate route must meet current standards. Keep the paperwork — you will need it when you sell.
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