Red flags in a cheap electrical quote
A quote significantly below the others is worth asking about before accepting — check it includes a proper consumer unit (not a budget one that doesn't meet current standards), covers making good afterwards, and includes the certificate you're entitled to for notifiable work. Cash-only, no fixed address, and no registration number are all worth asking about directly.
Electrical safety for holiday lets and Airbnbs
If you let a property short-term, insurers and booking platforms increasingly expect an in-date EICR and PAT-tested appliances, even though it isn't a blanket legal requirement the way it is for standard tenancies. Treat it the same as a rental for safety purposes — guests have less familiarity with the property than an owner-occupier would.
Understanding the labour vs materials split
Materials — consumer units, cabling, sockets, fittings — are usually a smaller share of an electrical quote than labour, particularly for jobs involving lifting floors or chasing walls. If a quote seems unusually cheap, check whether it's using a lower-spec consumer unit or cabling than a competing quote, not just a lower labour rate.
What does an RCD do?
A residual current device cuts power within milliseconds if it detects current leaking to earth — the main protection against electric shock from a faulty appliance or damaged cable. Modern consumer units have RCD protection built in across multiple circuits (RCBOs); older ones may only protect part of the property.
What affects the cost
Cost depends on the scope of the job, how much of the property needs to be accessed, the age and condition of the existing wiring, and whether the consumer unit needs upgrading. A single socket replacement is quick and low-cost; a full rewire in an older property takes longer, partly because of the making-good work afterwards.
Single phase vs three phase supply
Most UK homes run on a single-phase electricity supply, which is enough for typical household use. Larger properties, workshops, or homes adding multiple EV chargers or heavy machinery sometimes need a three-phase supply instead — this is arranged with the network operator, not just your electrician, and can take weeks.
Electrical work and home insurance
Some insurers ask whether notifiable electrical work has been certified when you make a claim involving fire or electrical damage — keep your Electrical Installation Certificate or Building Regulations compliance certificate somewhere you can find it, not just with the electrician's paperwork.
Electrical safety for landlords
Since 2020, landlords in England must have an EICR carried out every 5 years and provide a copy to tenants. Failing to do so can result in a fine of up to £30,000. If an EICR flags unsatisfactory work, it has to be fixed within 28 days or a shorter period the report specifies.