Full House Rewire Cost London 2026: Price Guide by Property Size

When a Full Rewire Is Necessary in London Properties

A full rewire is required when the existing electrical installation has deteriorated to the point where it cannot safely be repaired or partially updated. In London, a significant proportion of the housing stock is of Victorian or Edwardian origin, and properties that have not had their wiring updated within the last thirty to forty years may have rubber-insulated cabling that has become brittle with age, round-pin socket outlets, no earthing on metal light fittings, or a fuse board with rewirable fuses rather than modern circuit breakers and residual current devices. An Electrical Installation Condition Report, or EICR, carried out by a qualified electrician will identify whether a full rewire is required or whether targeted remedial works would be sufficient.

The trigger for a full rewire in London properties is typically an EICR that returns multiple Category 1 and Category 2 defects, indicating immediate danger and potential danger respectively. Where the remedial work required to bring the installation to a satisfactory standard would approach or exceed the cost of a complete rewire, the full rewire is the more rational and comprehensive solution. It also provides the opportunity to upgrade the capacity of the installation, adding additional circuits for electric vehicle charging, an electric shower, or home office equipment that was not anticipated when the original wiring was installed.

Full Rewire Costs for London Properties by Size

A one-bedroom London flat requiring a full rewire in 2026 typically costs between two thousand eight hundred and four thousand five hundred pounds for the complete job including materials, installation, and Building Regulations notification. A two-bedroom property costs approximately three thousand five hundred to five thousand five hundred pounds. A three-bedroom terraced house, which is the most common property type requiring a full rewire in inner London, costs between four thousand five hundred and seven thousand five hundred pounds. A four-bedroom property costs approximately six thousand to ten thousand pounds, and a five-bedroom or larger property will typically exceed ten thousand pounds.

These price ranges reflect the significant variation in difficulty encountered in London properties. A 1970s flat with a concrete construction and accessible cable routes is easier to rewire than a Victorian terraced house where the cables must be chased into solid brick walls, lifted from under timber floorboards, and routed through ceiling voids between two or more floors. The condition of the existing plaster and the extent of reinstatement required after cable chasing also varies significantly. Properties where the owner is prepared to accept surface-mounted conduit rather than chased-in cables can be rewired at lower cost, but surface trunking is not aesthetically appropriate in all situations.

What Is Included in a Full Rewire Price in London

A full rewire price from a London electrical contractor should include the consumer unit replacement with a modern split-load unit containing both Type B and Type C circuit breakers and residual current devices, all new ring main and radial circuits for power sockets, new lighting circuits, the installation of new sockets and switches throughout the property, the connection of all fixed appliances including electric cookers and showers, and the Building Regulations notification and Electrical Installation Certificate issued on completion. Prestige Engineers include all of these elements in their full rewire quotations for London properties, with no additional charges for inspections or certification that are sometimes excluded from headline prices quoted by other contractors.