What is an EICR and do I need one?
An Electrical Installation Condition Report checks a property's wiring against current safety standards and flags anything worn, damaged or non-compliant. Landlords are legally required to get one every 5 years; homeowners aren't, but it's worth having on an older property or one you've just bought where the wiring history is unknown.
When does a consumer unit need replacing?
Older fuse boxes with rewireable fuses or plastic (rather than metal) casings don't meet current wiring regulations and are a common reason a rewire quote comes in higher than expected. A modern consumer unit uses RCBOs, which cut power to a single faulty circuit rather than the whole property.
How many quotes should you get?
Three is the usual recommendation — enough to spot an outlier (too cheap or too expensive) without asking so many tradespeople to survey your property that it wastes everyone's time. Make sure each quote is for the same scope of work, since a lower price sometimes just means less is included.
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.
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.
Electrics in bathrooms — zone rules explained
UK wiring regulations split a bathroom into zones (0, 1, 2, and outside zones) based on distance from water, and each zone restricts what can be fitted and to what IP (ingress protection) rating. A standard socket can't go in zone 1, for example. This is why bathroom electrical work is notifiable under Part P — it's assessed against these zones, not just wired like any other room.
NICEIC & NAPIT registration explained
NICEIC and NAPIT are the two largest government-authorised Competent Person Schemes for electrical work in the UK. Joining requires a recognised qualification (City & Guilds 2382, the 18th Edition Wiring Regulations, plus a Level 3 NVQ and City & Guilds 2391 for inspection and testing), and ongoing assessment. A registered electrician can self-certify notifiable work without a separate council inspection.
Common electrical myths, busted
"If it's not broken, the wiring's fine" — wiring can be dangerous long before it visibly fails. "Any handyman can do electrics if it's small" — scope, not size, determines whether work is notifiable. "A tripped RCD means the RCD is faulty" — usually it means something else on that circuit is, and the RCD is working as intended.