A proper electrical supply to your detached garage, garden room, garden office, workshop or shed. Buried armoured cable, RCD protection, its own consumer unit where it needs one, earthing checked, Part P notified and certified.
From £700 for a detached garage or shed up to about 15m from the house. Most jobs 1-2 days. Certificate and Building Regulations notification included.
The building itself barely changes the price. What decides it is how far it is from the house, what you want to run out there, what the ground is like, and what your earthing arrangement allows. A typical job for us is:
For the full detail on cable sizes, trench depths and the PME earthing rule that most quotes never mention, read our garden office and outbuilding electrics guide.
Full-time working space: plenty of sockets, good lighting, a heater circuit and a data cable laid in the same trench as the power, so the Wi-Fi isn't an afterthought.
Lights, sockets and a switched outside light. Metal-clad garages are where the earthing question matters most.
Power tools, compressors and welders want a heavier supply. We size the cable for what you run now and what you'll add later.
From a single light and socket in a shed to a home gym with treadmill and heating. Same rules, scaled to the load.
We measure the run, look at the ground and check your earthing and consumer unit — before you have a number in your head.
Written, fixed price within 24 hours, with the trench route, cable size and earthing spelled out.
Trench, duct and cable, then the board and circuits in the outbuilding. Most jobs take 1-2 days.
EIC the same day. Part P notification to Building Control through NAPIT; the compliance certificate follows from NAPIT.
Prices include the armoured cable, ducting, the circuit at the house, the sub-board where one is needed, testing, certification and Part P notification. They do not include reinstating lawns or block paving, plastering or making good, or any building work on the outbuilding itself.
If the house board is an old wire-fuse box or has no spare way, a consumer unit upgrade may need to come first — we'll explain on the survey. Just want a socket on the outside wall? See outdoor socket installation.
Where the work is notifiable under Part P we register it with Building Control for you. You get the certificate, signed and dated, the same day.
Installed and tested to the 18th Edition wiring regulations, BS 7671:2018+A2:2022 — RCD protection, correct cable sizing, proper glanding and IP-rated fittings outdoors.
Quote before work starts. Number on the quote = number on the invoice. No surprises after the cable's in the ground.
Bradford-based, working from Halifax to York and across the M62 corridor into Lancashire & Greater Manchester. We know the housing stock, the stone walls and the Pennine ground.
TrustMark licence 3907641. Government-endorsed quality scheme for tradespeople — we're vetted, monitored and accountable.
26 years in the British Army (Royal Artillery). On time, tidy site, finished. Standards aren't optional. More about Steven →
Typical 2026 prices: a socket and light in an attached garage off an existing circuit, £250-£450. A detached garage or shed with its own supply up to about 15m, £700-£1,100. A garden office with a sub-board, heating and data at 15-30m, £1,200-£2,000. Trenching through a driveway or patio adds £300-£700, and an earth rod where one is needed adds £250-£450.
Usually, yes, for a detached building. A small consumer unit at the outbuilding gives it its own RCD-protected lighting and socket circuits and means a fault out there does not take the house down with it. For a single light and socket in an attached garage, a circuit from the house board is often enough. We decide on the survey, based on distance and what you plan to run.
Steel wire armoured (SWA) cable, buried in a trench and ideally run in ducting so it can be replaced later without digging the garden up again. It is sized for the load and the length of the run: on long runs, voltage drop rather than the load decides the size, so a 30m run to a garden office with heating is usually 6mm² or larger.
Yes. A new circuit to an outbuilding is notifiable under Part P of the Building Regulations. As a NAPIT-registered electrician we notify Building Control for you and you receive an Electrical Installation Certificate plus the Building Regulations compliance certificate. Keep both: a buyer's solicitor will ask for them.
It depends on your supply. Most homes along the M62 are on a PME (TN-C-S) supply, and BS 7671 restricts taking that earth out to a building with metal parts in contact with the ground, such as a metal-clad garage or one with a water supply. Those usually need an earth rod at the outbuilding instead. A timber garden room with no metal in the ground is usually fine without one. We check this on the survey, not on the day.
Not as a permanent arrangement. An extension lead through a window or under a door is not rated for outdoor use, is not protected against damage and will be coded on any EICR. It is also the most common cause of outbuilding fires we are called to. A proper armoured supply is a one-off cost that removes the problem.
A hot tub, caravan hook-up or a single heavy-duty outdoor outlet rather than a whole building. Commando sockets →
Full board or no RCD protection at the house? Often the first step before a new outdoor circuit. Fuse-board upgrade →
Charger going on the garage? We can plan the cable to carry both in one trench. EV charger service →
Weatherproof 13A sockets on the house wall for tools, lighting and the pressure washer. Outdoor sockets →
Garage, garden room and outbuilding electrics across West Yorkshire, Greater Manchester and East Lancashire. Pick your town for local prices, response times and recent jobs.