Smart meters and electrical work
If you're having a consumer unit replaced or a major rewire, it's worth telling your energy supplier in advance — work on the supply side sometimes needs the meter isolated by the network operator, not just your electrician, and this can take longer to arrange than the electrical work itself.
Shared supplies in flats and converted buildings
In a converted property, it's worth checking whether your flat has its own independent consumer unit and meter, or shares a supply with other flats via a landlord's distribution board. Shared supplies can complicate straightforward jobs and sometimes need freeholder permission before any work starts — check this before booking rather than on the day.
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.
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.
Do I need an electrical certificate to sell my house?
There's no legal requirement to provide one, but conveyancing solicitors routinely ask whether any electrical work done during your ownership was certified, and a missing certificate for notifiable work (a rewire, a consumer unit change, a kitchen or bathroom circuit) can hold up or complicate a sale. Keep any Electrical Installation or Building Regulations certificates with your house paperwork.
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.
What a good electrical quote should include
A proper quote should state the scope of work, whether it's notifiable under Part P, an itemised breakdown of labour vs materials, the certificate you'll receive on completion, and how long the job is expected to take. If a quote is missing any of these, ask before agreeing to the work.
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.