PRICE GUIDE · ELECTRICAL · 2026–2027
Electrical Fault Finding cost in the UK
£80–£250 per job. Typically £120.
Tracing an electrical fault in a UK home costs £80–£250, with about £120 typical, and the fee normally covers attending plus the first hour spent testing. Simple faults are found quickly; intermittent faults hidden in concealed wiring take longer, and London rates are higher.
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HOW MUCH IT COSTS
How much does electrical fault finding cost in the UK?
| Low end | £80 | a simple fault found in the first hour |
|---|---|---|
| Typical | £120 | what most people pay |
| High end | £250 | an intermittent fault in concealed wiring |
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
- Type of fault — a faulty appliance tripping the RCD is quick to find, an intermittent fault is not
- Concealed wiring — faults buried in walls or under floors take longer to trace
- Call-out timing — evening and weekend fault finding costs more
- Size of the installation — more circuits mean more testing
- Repair separate — fault finding is usually priced for diagnosis, with the repair quoted after
- Region — electricians in London and the South East charge more for the same diagnosis
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 electrical fault finding would have cost about £140 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What an electrical fault finding booking includes
Takes: An hour for most faults, several hours for intermittent ones. Not included: Major repairs, rewiring sections of cable and consumer unit replacement are usually priced separately — see the related guides below.
WHAT PEOPLE BOOK
Common electrical fault finding jobs
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Electrical Fault Finding near you, with prices shown
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How to pay less
- Unplug all appliances and reset the RCD to see if one appliance is causing the fault
- Note when the fault happens, which helps the electrician trace it faster
- Ask whether the fault finding fee covers the first hour and simple repairs
Before you book
- Never remove covers from sockets or the consumer unit yourself to look for a fault
- Ask whether the electrician is registered with NICEIC or NAPIT
- If there is a burning smell or scorching, switch off at the main switch and call immediately
- Ask for any repair to be quoted in writing before it starts
Electrical Fault Finding cost: questions people ask
£80–£250 per job, about £120 typical. A simple fault found in the first hour costs least; an intermittent fault in London costs the most.
Most faults are found within an hour. Intermittent faults can take several hours.
Common causes are a faulty appliance, water in an outdoor light or socket, or damaged cable. Testing narrows it down.
Usually only if it is quick and simple. Larger repairs are quoted separately once the fault is found.
Larger repairs, rewiring cable runs and consumer unit upgrades are separate. The electrician should price them once the fault is found.
They are Locufy guide prices for the UK, read from published UK fault finding costs — a national range, not a quote. The fault and timing decide your price.
MORE GUIDES