HOW TO HIRE · ELECTRICAL

How to hire a garden office electrician in the UK
The checks, the questions and the paperwork.

Power to a garden office is usually a notifiable new circuit. The register check, the trench and sub-board questions, and the certificates to keep.

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THE 60-SECOND VERSION

Hiring a garden office electrician in five steps

  1. List what the office will runSockets, lights, heater, air conditioning, a kettle — the load sets the cable size.
  2. Check the registerIn England and Wales, look up whoever will do the garden office supply on the Registered Competent Person Electrical register.
  3. Agree the trenchRoute, depth and who digs it; often the biggest single cost.
  4. Ask about earthing and a sub-boardThe office will usually need its own small consumer unit.
  5. Run data at the same timeAn ethernet cable in the same trench saves digging twice.

BEFORE YOU BOOK

Check before you book

Registered Competent Person Electrical

In England and Wales, the garden office supply is a new circuit from the consumer unit, which is notifiable, and in Wales outdoor work is notifiable as well. For the garden office supply you therefore need either a scheme electrician (NICEIC or NAPIT, for example) who self-certifies under the Building Regulations, or a building control notification before work begins, with an inspection fee to pay.

Look up the business name on the register; it takes a minute and should come before the garden office supply. electricalcompetentperson.co.uk →

Electrical Installation Certificate

The garden office supply and its circuits are tested to BS 7671 and recorded on an Electrical Installation Certificate. Notifiable work such as the garden office supply also bring a compliance certificate from the scheme, which gov.uk expects within 8 weeks in England and the Welsh Government within 30 days in Wales.

Before you pay for the garden office supply, ask for the certificate with its test results. gov.wales →

Building warrant (Scotland) and Northern Ireland

Scotland has no competent person register for electricians: the garden office supply must meet building standard 4.5, which means wiring to BS 7671, and some work, such as rewiring a flat, needs a building warrant that the owner applies for. Northern Ireland has no Part P-style notification rule for home wiring, which covers the garden office supply too.

Scottish homeowners should ask whether the garden office supply needs a warrant before work starts, and who will certify it. gov.scot →

Insurance and trader status

A trader quoting for the garden office supply should have public liability insurance and tell you who provides it. That trader status is what gives you rights under the Consumer Rights Act 2015, and for a home or online booking a 14-day cancellation window under the Consumer Contracts Regulations 2013 — which does not cover goods made to your specification, and leaves you paying for work you asked to start early.

Before booking the garden office supply, ask to see current insurance and check the Locufy profile for its trader and ID badges.

VAT

VAT on wiring a garden office is charged at the standard 20%, and any business turning over more than £90,000 a year in taxable sales has to register, add it to the price and set it out on its own line.

Ask for the VAT number, and look for VAT as its own line on the garden office wiring quote. gov.uk →

“What size of cable does the garden office need?”

A good answer: A size worked out from the load and the distance, not a standard roll; a long run with a heater needs more.

“How deep and how protected will the buried cable be?”

A good answer: Armoured cable at a safe depth with warning tape, the route recorded.

“Will the office have its own consumer unit?”

A good answer: Usually yes, a small sub-board protecting the office circuits.

“How will the office be earthed?”

A good answer: A clear plan for the earthing of a detached building, explained on the quote.

“Does the house consumer unit have room?”

A good answer: A spare way and suitable protection, or the board upgrade priced separately.

“Can you lay a data cable in the same trench?”

A good answer: Yes, in its own duct, so the office has wired internet.

“Who is digging the trench?”

A good answer: The electrician, a groundworker, or you — agreed and priced in advance.

Getting the quote right

  • Cable type, size and route length
  • Trench digging and reinstatement, or who does it
  • Sub-board, sockets, lights and any heater circuit in the office
  • Earthing arrangement and RCD protection
  • Data cable and duct if included
  • Who actually attends — the electrician and whoever digs the trench, employed or subcontracted — and the business's VAT number, with VAT at 20% shown as its own line
  • Certification and notification included

Walk away if

  • An extension lead or a cable clipped along the fence
  • Indoor cable buried without armour
  • No sub-board or RCD protection in the office
  • No competent person scheme and no building control notification
  • No plan for earthing the office
LOW
£500
TYPICAL
£1,500
HIGH
£2,000

What a garden office electrician costs: £500–£2,000 per job

Garden office electrics are priced per job; the length of the armoured cable run and the trench drive most of it, with the sub-board, heating and data adding to it. Garden Office Electrics price guide →

Guide prices compiled by the Locufy team from published Irish and UK provider price lists and 2026/27 cost guides. Updated 2026.

KNOW WHAT TO LOOK FOR? NOW FIND ONE

Garden office electricians near you, with the badges that matter shown

ID checked, trader status and one score from every review — on the card, before you message anyone. Nearest first. No account needed to look.

Or post the job free and let them come to you.

  1. Survey and designLoad, distance, earthing and the house board checked; cable sized.
  2. TrenchTrench dug to depth along the agreed route; ducts for power and data.
  3. InstallArmoured cable laid and connected; sub-board, sockets and lights fitted in the office.
  4. TestEvery circuit tested, including RCD operation and earth fault loop impedance at the office.
  5. Certify and notifyElectrical Installation Certificate handed over; work notified through the scheme.

Sub-board
A small consumer unit in the outbuilding.
Armoured cable
Steel-protected cable for burying.
SWA
Steel wire armoured cable, the usual buried supply.
Earthing arrangement
How the outbuilding is connected to earth for safety.
Voltage drop
The loss over a long cable run, which sets the cable size.
Duct
A pipe laid in the trench that the cable runs through.

AFTER

When the job is done

Keep the certificates and cable routeThe Electrical Installation Certificate, the compliance certificate and a sketch of the buried cable.
Load-test the officeHeater, lights and computers on together; the breakers should hold.
Label the boardsBoth the house board and the office sub-board clearly labelled.
Rate the workOnly booked jobs can be reviewed on Locufy, so yours carries weight; if the garden office supply falls short, use the make-it-right step first and the provider is asked to fix it before the review is published.

STEP 1Give the electrician a written chance to fix itMost problems with the garden office supply are settled at this stage: say what is wrong, attach photos and set a fair deadline. If the garden office supply fell below reasonable care and skill, the Consumer Rights Act 2015 entitles you to have it redone or to pay less.
STEP 2Use Locufy's make-it-right stepRate the garden office supply under four stars and you are asked whether to send it to the provider first; we follow it through. Then the review goes up.
STEP 3Unsafe or uncertified workWhere the garden office supply needed self-certifying or notifying in England or Wales and neither happened, building control at the council is the place to go; if only the compliance certificate is missing, ask the electrician's scheme to follow it up. For a dispute about the garden office supply with the trader, Trading Standards is reached through the Citizens Advice consumer helpline on 0808 223 1133 in England and Wales, Advice Direct Scotland on 0808 800 9060, or Consumerline on 0300 123 6262 in Northern Ireland.
STEP 4Money still in disputeIf the garden office supply is still not settled, you can claim without a solicitor: the small claims track takes claims up to £10,000 in England and Wales, simple procedure up to £5,000 in Scotland, and the small claims court up to £5,000 in Northern Ireland.

Hiring a garden office electrician: questions people ask

In England and Wales it is a new circuit and notifiable: a scheme-registered electrician self-certifies it, or building control is notified before work begins.

An Electrical Installation Certificate for the supply and office circuits, and a compliance certificate from the scheme.

£500–£2,000 a job, typically around £1,500. The distance and the trench drive most of it; heating, a sub-board and data add to it. See the Garden Office Electrics price guide for the detail, then search your postcode above to compare garden office electricians nearby.

Often yes; agree the route, depth and a time for the electrician to check it before the cable goes in.

Usually; a sub-board protects the office circuits and lets you switch them off there.

Yes, in its own duct, kept apart from the power cable.

MORE GUIDES

More hiring guides in electrical

How to hire: Outbuilding Power SupplyHow to hire: Data & Network CablingHow to hire: Outdoor & Garden LightingHow to hire: Consumer Unit / Fuse Board UpgradeHow to hire: Extra SocketsHow to hire: ElectricianHow to hire: Hot Tub WiringHow to hire: EV Charger InstallationAll 701 hiring guides →

Garden office electricians near you

Garden office electricians in LondonGarden office electricians in ManchesterGarden office electricians in BirminghamGarden office electricians in GlasgowGarden office electricians in BelfastAll garden office electricians on Locufy →

Sources — checked October 2026

  1. gov.uk — Approved Document P: electrical safety in dwellings (England)
  2. Registered Competent Person Electrical register
  3. gov.uk — building work, replacements and repairs to your home (England)
  4. gov.wales — building regulations: electrics
  5. gov.scot — Building Standards Technical Handbook 2022 (domestic), standard 4.5 electrical safety
  6. gov.uk — building regulations: use a competent person scheme
  7. Consumer Rights Act 2015, section 49 — reasonable care and skill
  8. Consumer Rights Act 2015, section 54 — what you can ask for when a service falls short
  9. Consumer Contracts Regulations 2013, regulation 30 — the 14-day cancellation period
  10. Consumer Contracts Regulations 2013, regulation 28 — contracts the cancellation right does not cover
  11. Consumer Contracts Regulations 2013, regulation 36 — services started within the cancellation period
  12. Civil Procedure Rules Part 26 — the small claims track limit (England and Wales)
  13. Scottish Courts and Tribunals — making a claim under simple procedure
  14. nidirect — the small claims process (Northern Ireland)
  15. Buildings and construction (VAT Notice 708) — 2.1 Construction services: work to an existing building is normally standard-rated
  16. GOV.UK — VAT rates
  17. GOV.UK — Register for VAT: when to register