Free House Rewiring Cost Calculator
Estimate the cost of rewiring your home based on property size, bedrooms, floors, and location. Includes Part P certification costs.
This rewiring cost calculator gives homeowners and landlords a realistic estimate for a full or partial house rewire in the UK. Enter your property size, number of bedrooms, floors, and postcode to see estimates based on what electricians actually charge in your area. Rewiring is one of the most disruptive and expensive electrical jobs: use this tool to budget accurately before getting quotes.
House Rewiring Cost Calculator results
Fill in the details and select Calculate to see your figures.
Win more of the jobs you quote.
Tradehand is the software your trade business runs on, with an assistant that answers every call and message, sends your quotes the same day and chases them until they land. The first £10,000 Tradehand collects for a business carries no Tradehand fee. After that, Tradehand earns 5% of collected invoice payments. No monthly fee, setup fee, card fee or contract.
Get startedHow to use the House Rewiring Cost Calculator
- 1Enter your property's total internal floor area in square metres.
- 2Set the number of bedrooms and floors.
- 3Toggle whether the property will be occupied during the work. This affects duration and cost.
- 4Enter your postcode. We use real local electrician day rates to adjust the estimate for your area.
- 5Review the estimated cost range and timeline. Always get at least three quotes.
How the House Rewiring Cost Calculator works
A rewire is a regional price estimate, not a fixed formula. The dominant cost is labour over several days, which tracks floor area, so the honest way to sketch it by hand is a rate per square metre with adjustments for the things that add days.
- 85 m² 3-bed semi, national rates: 85 × £35–£50 = £2,975–£4,250 base.
- Two floors (×1.10) and occupied during work (×1.20): × 1.32 ≈ £3,930–£5,610.
- Add ~£300 for Part P certification → roughly £4,200–£5,900, in line with Checkatrade's £4,000–£6,000 benchmark for a 3-bed semi (2026).
This is a cost breakdown, not an engineering formula. The per-m² rate is calibrated to real UK electrician pricing. It assumes a standard property; access problems, solid walls, or a new consumer unit and earthing upgrades can push the real quote higher. Always get at least three quotes.
Typical UK benchmarks
| UK Average Rewire (3-bed) | £4,000-£6,000 for a 3-bed semi (Checkatrade House Rewiring Cost guide, 2026) |
| London Premium | London and the South East run higher; ask for local written quotes rather than applying a national uplift |
| Part P Certification | £200-£400 typical local-authority building notice fee for notifiable domestic electrical work (Checkatrade: How to Get a Part P Electrical Certificate, 2026) |
Disclaimer
This tool gives an estimate for general guidance only, based on typical UK figures and the details you enter. It is not a formal quote, survey, or professional advice. Always confirm with a qualified tradesperson before relying on any figure, as regional prices, site conditions, and current standards vary.
You do the job, Tradehand handles everything around it.
Your assistant sends the quotes, chases the invoices, books the work and keeps your customers updated. The first £10,000 Tradehand collects for a business carries no Tradehand fee. After that, Tradehand earns 5% of collected invoice payments. No monthly fee, setup fee, card fee or contract. One office hire costs about £25,000 a year, whether the invoices land or not.
Source: Office manager salary, National Careers Service
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