DATA-BACKED GUIDE · UPDATED JULY 2026
Partial vs full house rewire cost in the UK: which do you actually need?
A lot of homeowners are told they need a full house rewire when only part of the wiring is actually past it. The gap between rewiring one circuit and doing the whole property is huge, so it pays to know which job you are really looking at. The real prices below show what people paid for both, and this guide helps you work out where you sit.
The quick version
- A partial rewire tackles specific circuits or rooms, so it costs far less than doing every cable in the house.
- A full rewire is usually justified by rubber or fabric-insulated cabling, a fuse box with rewireable fuses, or an addition dated before the mid-1980s.
- All electrical work must meet Part P of the Building Regulations and should be carried out by a registered electrician who can self-certify it.
- The real prices below cover both partial jobs and whole-house rewires so you can gauge the difference before you get quotes.
What people actually paid
Real prices, in people's own words
- £4,200“I paid £4,200 for 3 bed rewire, including porch light and moving consumer board in 2020 (Somerset)”
- £4,600“I paid 4.6k for a 4 bed detached, including a mains alarm”
- £4,600“I paid 4.6k for a 4 bed detached, including a mains alarm”
- £7,000“the cost for materials and labour is coming in at nearly £7000. (plus the kitchen cost that was over £1700, so nearly £9000 total.)”
Genuine amounts posted publicly. We publish the price and the quote, never the person.
Why the price varies so much
The single biggest factor is how much of the house is being touched. A partial rewire of a kitchen and one ring main is a day or two of work, while a full rewire means lifting floors, chasing walls in every room and running new cables throughout, then making good afterwards. Access matters too: a house with suspended timber floors and a loft is quicker to wire than one sitting on a solid concrete slab where cables have to be buried in the walls. Property age, the number of sockets and light points you want, and whether you are adding extras like outdoor sockets or a car charger all push the figure around. Occupied homes with furniture to work around also take longer than an empty one.
How to pay less
- Get an electrician to test the existing installation first with an EICR report, so you only replace what genuinely fails rather than paying for a full rewire on a hunch.
- If the wiring is sound but the consumer unit is old, sometimes a new fuse board and a few remedial fixes buy you years without a full rewire.
- Get three quotes from local registered electricians, because national firms almost always quote above local trades for the same work.
- Pay any deposit by credit card where you can, so Section 75 protection covers you if the firm folds mid-job.
Common questions
How do I know if I need a full rewire or just a partial one?
Have a registered electrician carry out an EICR (Electrical Installation Condition Report). It grades faults and tells you whether the whole installation is unsafe or just certain circuits. Old rubber or cloth-covered cabling, a fuse box with ceramic rewireable fuses, and no earth on lighting circuits all point towards a full rewire, while isolated faults often only need a partial one.
Is a partial rewire a false economy?
Not necessarily. If the rest of the installation tests fine, replacing only the tired circuits is sensible. It becomes a false economy when the wiring is uniformly old, because you end up paying twice: once for the partial work and again for the full rewire a few years later when the rest fails.
Can I stay in the house during a partial rewire?
Usually yes. A partial rewire affects fewer rooms and rarely needs the whole supply off for long, so most people carry on living there. A full rewire is far more disruptive and some households move out for the noisiest days, though plenty stay put and work around it room by room.