How much does it cost to rewire a house in the UK in 2026?

A full house rewire costs £3,100 to £10,600 in 2026 depending on property size. A 2-bed flat costs £3,100 to £4,800. A 3-bed semi costs £4,500 to £7,500. A 5-bed detached costs £7,500 to £10,600. These figures include a new consumer unit and building regulations notification.

How accurate is the rewiring cost estimate?

The mid-range figure is based on NICEIC-certified electrician rates for 2026 and is typically within 15 to 18 percent of real quotes. Properties with unusual layouts, solid walls or old rubber insulation can push costs to the upper range.

How long does a full house rewire take?

A 2-bed flat takes 3 to 5 days. A 3-bed house takes 5 to 10 days. A 5-bed house takes 7 to 14 days. First fix (pulling cables) and second fix (fitting sockets and switches) are separate phases separated by plastering.

Do I need to move out during a house rewire?

For a full rewire on a 3-bed house most homeowners stay elsewhere for the first 3 to 5 days of first fix when power is off for extended periods. Some stay throughout with a temporary supply arrangement agreed with the electrician.

Does a rewire include a new consumer unit?

Yes. A full rewire always includes a new consumer unit (fuse box) with RCBOs or RCDs meeting 18th Edition wiring regulations. A consumer unit upgrade without rewiring costs £400 to £900 separately.

Is a rewire notifiable under Building Regulations?

Yes. All rewiring work is notifiable under Part P of the Building Regulations in England and Wales. Your NICEIC or NAPIT-registered electrician must issue an Electrical Installation Certificate. You will need this for any future sale or remortgage.

Is a partial rewire significantly cheaper than a full rewire?

A partial rewire of one circuit or floor costs £800 to £2,500 depending on scope. However if your wiring is over 25 years old a full rewire is usually more cost-effective long-term than ongoing partial work.

What signs indicate a house needs rewiring?

Rubber-insulated or aluminium cables (pre-1970s), persistent tripping, scorch marks around sockets, lack of earthing, fuses rather than circuit breakers in the consumer unit, or a failed EICR with C1 or C2 codes all indicate rewiring is needed.

🧮 Interactive Calculator · April 2026

Rewiring Cost Calculator UK

Get a 2026 UK rewiring cost estimate in 30 seconds. Full or partial rewire, EICR test, fuse box upgrade. NICEIC/NAPIT certified electrician rates including Part P notification.

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Updated June 2026

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5 steps. Includes wiring, sockets, switches, consumer unit, Part P certification, NICEIC/NAPIT registration, VAT.

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Rewiring Calculator Questions

How accurate is this calculator?

Mid figure matches NICEIC certified electrician rate averages for 2024-2025. Variance ±18% reflects real quote spread.

When does a house need rewiring?

Most UK homes need rewiring every 25-30 years. Signs: rubber-insulated cables, fuse box, 2-pin sockets, no RCD protection, frequent tripping.

What is Part P certification?

Building Regulations Part P covers electrical safety. Notifiable work must be certified by a registered electrician (NICEIC, NAPIT, ELECSA).

How long does a rewire take?

1-bed flat: 3-5 days. 3-bed semi: 5-10 days. 4-bed detached: 7-14 days. Add 20-30% if occupied.

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