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.
First fix and second fix, explained
On a rewire or new build, "first fix" is running cables through walls and floors before they're closed up; "second fix" is fitting sockets, switches and light fittings once decorating is done. Getting the timing right with other trades on site avoids cables being covered before they're tested.
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.
Wiring a loft conversion
A loft conversion typically needs new lighting and socket circuits, often a new consumer unit way if the existing one is already at capacity, and mains-wired interlinked smoke alarms are usually required by building control as part of the sign-off, not just recommended.
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.
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.
DIY electrical work vs when you need a professional
Under Part P of the Building Regulations, certain electrical work in a home is notifiable — it has to be carried out by a registered electrician who can self-certify it, or separately inspected by your council's building control. New circuits, consumer unit replacements, and any new work in a kitchen or bathroom are notifiable. Like-for-like socket or switch swaps usually aren't.
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.