🧮 Interactive Calculator · 2026 UK Pricing · No Sign-up

Rewiring Cost Calculator UK

Get a 2026 UK rewiring cost estimate in 30 seconds. Full or partial rewire, EICR test or fuse-box upgrade — by property size and region. NICEIC/NAPIT certified electrician rates including Part P notification and VAT. No email required.

Start Calculator ↓Read rewiring cost guide
Get My 3 Free Rewiring Quotes
Compare vetted local certified electricians · 60 seconds · No obligation
NICEIC / NAPIT certified rates
2026 supply + fit pricing
Part P + EICR included
100% free · No signup
Free Tool
House rewiring costs in the UK (2026)Typical installed prices by option — 2026 — Source: BestBuilders.co.uk · typical UK prices 2026 · excludes VAT & access variances House rewiring costs in the UK (2026) Typical installed prices by option — 2026 £0 £2k £5k £8k £10k 1-bed flat / studio Full rewire £2.9k–£4.1k 3-bed semi / terraced Full rewire £4.5k–£6.5k 4-bed detached Full rewire £5.9k–£8.5k Source: BestBuilders.co.uk · typical UK prices 2026 · excludes VAT & access variances BestBuilders.co.uk
⊞ Embed this infographic on your site — free

Copy this code — it links back to us:

Estimate Your Rewiring Cost

4 steps. Supply-and-fit including new wiring, accessories, consumer unit, certification, Part P notification and VAT.

Methodology

How This Calculator Works

We start from the full-rewire base price for your property size, scale it by the scope of work, add an occupied-home factor, then apply a regional multiplier.

Property Size (full rewire base)

  • 1-bed flat / studio — £3,500
  • 2-bed flat / terraced — £4,200
  • 3-bed semi / terraced — £5,500
  • 4-bed detached — £7,200 · 5+ bed — £9,500
  • Partial ×0.55 · Fuse box only ×0.18 · EICR ×0.08 · Occupied +15%

Includes wiring, accessories, consumer unit, certification, Part P notification and VAT.

Regional Multipliers

  • London 1.30× · South East 1.15× · South West 1.05×
  • East 1.08× · Midlands 1.00× (baseline)
  • North West 0.93× · North / Yorkshire 0.92×
  • Wales 0.93× · Scotland 0.95× · NI 0.88×

Low/high band is ±18% around the mid estimate. A firm price follows a survey.

Typical House Rewire Costs (2026)

Full supply & fit incl. consumer unit, Part P notification, certification & VAT, Midlands baseline (±18%), unoccupied.

Property / jobScopeCost range
1-bed flat / studioFull rewire£2,870–£4,130
3-bed semi / terracedFull rewire£4,510–£6,490
4-bed detachedFull rewire£5,900–£8,500
3-bed semiFuse box only (×0.18)£810–£1,170
3-bed semiEICR test only (×0.08)£360–£520

These figures power the calculator above — enter your own spec for a tailored estimate. For the full breakdown, read our complete cost guide.

Frequently Asked Questions

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

A full rewire typically costs around £4,800-£7,200 for a 3-bed semi in 2026, £3,000-£4,500 for a 1-bed flat and £6,300-£9,500 for a 4-bed detached. London and the South East run 15-30% higher, and living in during the work adds about 15%.

When does a house need rewiring?

Most UK homes need rewiring every 25-30 years. Warning signs include rubber or fabric-insulated cables, an old fuse box, 2-pin sockets, no RCD protection and frequent tripping. An EICR test confirms whether a rewire is needed.

What is Part P certification?

Building Regulations Part P covers domestic electrical safety. Notifiable work must be certified by a registered electrician (NICEIC, NAPIT or ELECSA), who issues an electrical installation certificate and notifies building control.

How long does a rewire take?

A 1-bed flat takes around 3-5 days, a 3-bed semi 5-10 days and a 4-bed detached 7-14 days. Allow an extra 20-30% if you remain living in the property during the work.

Does the estimate include the consumer unit and VAT?

Yes. A full-rewire estimate includes new wiring, sockets, switches, a new consumer unit, Part P notification, NICEIC/NAPIT certification and VAT. A partial rewire or fuse-box-only job is priced as a proportion of a full rewire.

How accurate is this rewiring cost calculator?

It gives a guide range from typical 2026 rates for your property size and job, not a fixed quote. A full rewire's price hinges on the number of circuits, whether floors and plaster must come up, and access. An electrician's survey confirms the scope and certification needed, so the final quote can move up or down from the estimate.

What does the estimate include and exclude?

The figure covers new cabling, accessories, a consumer unit and testing with certification. It usually excludes plastering and redecoration after the walls are chased, lifting and relaying flooring, and any extra sockets, spotlights or smart controls you add. Making-good is often quoted separately, so a partial-rewire or first-fix-only price will read very differently from a full turnkey job.

Why does my real rewiring quote differ from the calculator?

The tool uses average rates, but disruption drives the true cost. An occupied home, solid walls, concrete floors, or awkward access all add labour, while an empty property is cheaper to rewire. The number of circuits and extras you choose matters, and London and the South East run higher than the national labour rate the calculator assumes for its guide figure.
Read Next
⚡

Rewiring Cost Guide

Full 2026 pricing by property size, scope and region.

🔥

Boiler Cost Guide

Combi, system and regular boiler prices for 2026.

💷

All Cost Guides

Browse all our 2026 UK cost guides and calculators.

Ready for real quotes?

Get 3 Free Rewiring Quotes

Match with up to 3 vetted local NICEIC/NAPIT certified electricians quoting on the same spec. No obligation.

Get My 3 Free Quotes →
📋Ready for real quotes? Compare vetted Electrical pros3 free, no-obligation quotes from local specialists — get quotes →
Reviewed by the BestBuilders editorial team on 3 July 2026 · Next scheduled review: October 2026 · See our editorial standards.