If you own an older property in London, rewiring is one of the most important safety investments you can make. But how much should you expect to pay? In this guide, we break down realistic rewiring costs for London homes in 2026.
What Does a Full House Rewire Include?
A full rewire replaces all the fixed electrical wiring in your property, including the consumer unit, all circuits, sockets, switches, and light fittings. The work brings your home up to current BS 7671 (18th Edition) wiring regulations and includes full testing and certification.
Typical Rewiring Costs in London (2026)
Guide Prices
1-2 bedroom flat: Typically between £2,500 and £4,500 depending on the number of circuits and accessibility.
3-bedroom semi or terrace: Usually £4,000 to £6,500. This is the most common type of rewire we carry out across London.
4-5 bedroom detached house: Expect £6,000 to £10,000 or more, depending on the size and complexity.
These are guide prices only. Every property is different, and we always provide a detailed, no-obligation quote after surveying your home.
What Affects the Cost?
Several factors influence the final price. The size and layout of your property is the biggest factor, but accessibility also plays a major role. Properties with solid walls, concrete floors, or limited loft access typically cost more. Listed buildings or period properties may require additional care to preserve original features.
The number of sockets, switches, and light points you want also affects the price. Most homeowners take the opportunity to add extra sockets and USB charging points when rewiring.
Signs Your Home Needs Rewiring
If your home has a fuse box with rewirable fuses instead of a modern consumer unit with MCBs and RCDs, that is a strong indicator. Other signs include rubber or lead-insulated cables (common in pre-1960s properties), sockets warm to the touch, flickering lights, burning smells, or frequently tripping circuits.
The safest way to find out is to book an EICR inspection. This will identify any issues and tell you whether a full rewire is needed.
How Long Does Rewiring Take?
A typical three-bedroom house rewire takes four to five working days. We work methodically through the property and always reinstate surfaces before we leave. For most properties, you can stay in the home during the work.
Get a Free Rewiring Quote
Every quote is free, detailed, and no-obligation. Call us on 07500 721 453 or request a quote online.
Why Choose F & A Electrical?
We are NIC-EIC accredited, carry £5 million public liability insurance, and have a 9.69/10 rating on Checkatrade from over 237 verified reviews. We cover all London boroughs — see our North London, South London, East London, West London, and Central London service areas.
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Need help with your electrical project? Contact F & A Electrical for a free quote, or call us on 07500 721 453.