PRICE GUIDE · ELECTRICAL · 2026–2027
Outbuilding Power Supply cost in the UK
£180–£1,500 per job. Typically £500.
Getting power to a shed, garage or other outbuilding in the UK costs £180–£1,500, with about £500 typical. A short spur to an attached garage is cheapest; a long buried armoured cable to a detached building, with its own sub-board, lights and sockets, costs the most.
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HOW MUCH IT COSTS
How much does an outbuilding power supply cost in the UK?
| Low end | £180 | a short spur to an attached garage |
|---|---|---|
| Typical | £500 | what most people pay |
| High end | £1,500 | a long buried run with a sub-board |
Locufy guide prices for 2026–2027. Updated 2026. A national range, not a quote — enter your town above for real prices from the electricians and electrical firms near you.
What moves the price
- Distance — a detached outbuilding far from the house needs a long armoured cable run
- Buried or surface — burying cable in a trench costs more than clipping it along a wall
- Load — workshops with power tools or heaters need a heavier supply than a few lights
- Sub-board — a small consumer unit in the outbuilding protects its circuits
- House consumer unit — a full board may need a spare way or upgrade
- Outbuilding fit-out — sockets and lights inside add to the outbuilding power supply
Electrical work prices in the UK are up 6% over five years (ONS Consumer Price Inflation, Services for maintenance and repair, to 2026 August). Five years ago a typical outbuilding power supply would have cost about £660 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What an outbuilding power supply booking includes
Takes: Half a day for a short run, one to two days with trenching and a sub-board. Not included: Trench reinstatement under paving, the outbuilding itself and heating or workshop machinery circuits are usually priced separately — see the related guides below.
WHAT PEOPLE BOOK
Common outbuilding power supply jobs
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Outbuilding Power Supply near you, with prices shown
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How to pay less
- Dig the cable trench yourself if the electrician agrees, to cut the outbuilding power cost
- Run the supply along a wall where possible rather than burying the cable
- Size the supply for future needs so you do not pay to replace the outbuilding cable later
Before you book
- Power to an outbuilding means a new circuit, which is notifiable under Part P and needs a registered electrician
- Ask how the buried cable to the outbuilding will be laid at a safe depth with warning tape and suitable protection
- Check the outbuilding is dry and secure enough for electrical fittings
- Ask whether the outbuilding price includes the trench, sub-board and certification
Outbuilding Power Supply cost: questions people ask
£180–£1,500 per job, about £500 typical. A short spur to an attached garage costs least; a long buried run with a sub-board costs the most.
Half a day for a short run, and one to two days with trenching and a sub-board.
A new circuit to an outbuilding is notifiable, so a registered electrician must certify it or building control must be notified.
Only briefly. A permanent outdoor extension lead is unsafe; a proper protected circuit is the right solution.
Reinstating paving, the outbuilding itself and heavy machinery circuits are separate. Check whether digging the trench is part of the price.
They are Locufy guide prices for the UK, read from published UK outdoor electrics costs — a national range, not a quote. Distance and load decide your price.
MORE GUIDES