House Rewiring Cost UK 2026: £3,500–£12,000 by Property Size
A full UK house rewire in 2026 costs £3,500 to £12,000 depending on property size, accessibility and whether you stay in during the works. The range is wider than most cost guides admit because pre-1970 properties hide problems — asbestos, lath-and-plaster walls, knob-and-tube remnants — that 21st-century estimators can't see until floorboards come up. This is the real range, what's covered, and how to tell if you need a full rewire or just a partial.
Full Rewire vs Partial Rewire — What's the Difference?
"Rewire" covers two very different jobs. A full rewire replaces every cable, socket, switch, light fitting and the consumer unit; a partial rewire targets specific circuits (e.g. kitchen + bathroom + consumer unit, or just upstairs). The cost difference is significant — and many "must rewire" claims actually fail on EICR survey and turn into smaller targeted jobs.
Full rewire
Every cable replaced, every back-box renewed, all sockets and switches new, consumer unit upgraded to 18th edition Amendment 3, full Part P certificate.
Right when: wiring is pre-1970 VIR/rubber cable, EICR returns C1 (immediate danger) or multiple C2s.
Partial rewire
Targeted circuit replacement: usually kitchen, bathroom and any failing circuits identified on the EICR, plus consumer unit upgrade.
Right when: wiring is 1980s+ with localised faults, or you're renovating one or two rooms anyway.
2026 UK Rewire Prices by Property Type
Mid-market quotes from NICEIC or NAPIT-registered electricians in spring 2026. London and South East add 15–25%. Empty house is 15–25% cheaper than occupied because the work runs faster.
| Property | Full rewire (occupied) | Full rewire (empty) | Partial rewire | Time on site |
|---|---|---|---|---|
| 1-bed flat | £2,800–£4,200 | £2,400–£3,600 | £1,400–£2,200 | 3–5 days |
| 2-bed flat | £3,500–£5,500 | £2,900–£4,600 | £1,800–£2,900 | 4–6 days |
| 3-bed semi | £5,500–£8,500 | £4,500–£7,000 | £2,800–£4,500 | 6–8 days |
| 4-bed detached | £8,500–£12,000 | £7,000–£10,000 | £4,000–£6,500 | 8–10 days |
| 5+ bed / listed | £11,000–£20,000+ | £9,000–£17,000 | £5,500–£9,500 | 10–18 days |
Listed buildings and pre-1900 properties add 25–60% above the upper figures because of lath-and-plaster wall protection, conservation officer notifications and slower second-fix to keep original features intact.
What a Proper Full Rewire Includes in 2026
The 18th edition Amendment 3 (in force from 2025) added new requirements that older quotes may not include. These are the eight elements that have to be in writing — if any are missing, the quote is incomplete.
✅ New consumer unit (18th ed. Am3)
Metal-cased, RCBO protection per circuit (not just RCD), surge protection device, AFDD on bedroom/lounge circuits (new 2025 reg). £400–£700 typical.
✅ All cabling replaced
6242Y twin-and-earth in twin-RCBO-protected zones; armoured outside. Old VIR or rubber-insulated cables lifted and disposed.
✅ Sockets and switches
New back-boxes where needed, all sockets MK or Hager grade as standard. USB-A and USB-C integrated sockets add £8–£15 each.
✅ Lighting points + fittings
Existing fitting reused if good condition, otherwise replaced. Pendant cable or downlights as specified. Ceiling rose changeover included.
✅ AFDD protection (new 2025)
Arc Fault Detection Devices now mandatory on bedroom and lounge circuits under 18th edition Amendment 3. Add £30–£50 per circuit.
✅ Earthing and bonding
Main earth conductor 16mm² to MET, bonding to gas and water within 600mm of service entry. Standard for any rewire.
✅ Part P certification
Building control notification, electrical installation certificate (EIC), 30-day registration with the Competent Person Scheme. £180–£300 typically built into price.
✅ First-fix and second-fix only
The wall chases get plastered over and made good, but final decoration (skim coats, painting) is usually NOT included. Budget £600–£1,800 for plastering, painting, flooring reinstatement.
Three Worked Examples (Spring 2026)
Composite figures from BestBuilders quote data across spring 2026. All NICEIC-registered electricians, all with full Part P certification.
£4,800 · occupied 2-bed Newcastle flat
Pre-1980 VIR cable, six circuits. New 10-way Hager consumer unit (£480), 4 days on site, 22 sockets + 8 switches + 4 lights replaced. Family stayed in — work done circuit-by-circuit over 5 days to keep one ring alive at all times.
£7,200 · empty 3-bed Sheffield semi
1960s twin-and-earth, no asbestos. Eight circuits, 32 sockets, 12 switches, 9 lights, two outdoor sockets, EV charger consumer-unit pre-wire. 4 days fast (empty house). MK Logic+ grade sockets throughout.
£11,500 · occupied 4-bed Reading detached
Mixed 1970s/80s wiring with two failed circuits flagged in EICR. New 18-way consumer unit, 40+ sockets, 18 switches, 14 lights, two outdoor circuits, EV charger circuit. 9 days, family relocated for 4 of those days.
When to Do an EICR Survey Instead of Going Straight to Rewire
An EICR (Electrical Installation Condition Report) costs £180–£280 for a typical home and identifies exactly which circuits, fixtures or wiring need attention. Many homeowners called in for "must rewire" by trade-show electricians end up with EICR results showing only 2–3 C2 (potentially dangerous) findings — fixable for £500–£1,500 instead of £5,500–£8,500 full rewire. Always EICR first unless you have visible VIR cable or known pre-1965 wiring. Reputable electricians will quote the EICR as a standalone before pushing a rewire scope.
For more on the EICR process and what each grade (C1/C2/C3/FI) means, see our house wiring lifespan guide.