Rewiring a house in London in 2026 typically costs between £3,500 and £15,000+, depending on the property’s size, condition, accessibility, and the complexity of the electrical system. For example, a 1-bed flat may cost as little as £3,500–£5,500, while a large 5-bedroom house can reach £12,000–£18,000 or more. These figures reflect current labour rates, material costs, and compliance with the latest UK electrical safety regulations. In this guide, we’ll break down exactly what influences these costs, how pricing varies by property type, and how you can reduce expenses without compromising safety.
What Does a Full House Rewire Include?
A full rewire is more than just replacing old wires—it’s a comprehensive upgrade of your property’s electrical system to meet modern standards.
Typically, a full rewire includes:
- Replacement of all electrical wiring
- Installation of new sockets and switches
- Upgrading the consumer unit (fuse box)
- Installing lighting circuits and fittings
- Earthing and bonding to meet regulations
- Testing and certification (EICR)
In many London properties—especially older homes—rewiring is essential for safety, efficiency, and insurance compliance.
Rewiring Costs by Property Size in London (2026)
1-Bed Flat Rewire Cost
For a standard 1-bedroom flat in London:
- Average cost: £3,500 – £5,500
- Timeframe: 2–4 days
Smaller flats are generally cheaper due to fewer circuits, sockets, and shorter cable runs. However, costs can increase if access is difficult or if the building has strict regulations.
2-Bed Flat or House
- Average cost: £4,500 – £7,000
- Timeframe: 3–6 days
This is one of the most common property types in London. Costs vary depending on layout complexity and whether the property is occupied.
3-Bed House Rewire Cost
- Average cost: £6,000 – £9,500
- Timeframe: 5–10 days
Three-bedroom homes require more circuits, additional sockets, and often more extensive labour. If the property is older, costs can increase due to structural challenges.
4-Bed House Rewire Cost
- Average cost: £8,500 – £13,000
- Timeframe: 7–12 days
Larger homes often include multiple bathrooms, kitchens, and possibly extensions, all of which add to the electrical load and complexity.
5-Bed House or Larger Properties
- Average cost: £12,000 – £18,000+
- Timeframe: 10–15+ days
High-end or large properties may include smart home systems, outdoor wiring, and advanced lighting setups, which can significantly increase costs.
Cost Per Room and Per Square Meter
Another way to estimate rewiring costs:
- Per room: £800 – £1,500
- Per square meter: £60 – £120
These estimates are useful for partial rewires or extensions.
What Factors Affect the Cost of Rewiring?
Property Size and Layout
The larger the property, the more materials and labour required. Open-plan homes may be easier (and cheaper) to wire than properties with many small rooms.
Accessibility
- Empty property: 10–20% cheaper
- Occupied property: Higher labour costs due to careful work and protection
Difficult access (e.g., solid walls, limited floor voids) increases labour time significantly.
Age of the Property
Older London homes (Victorian, Edwardian) often:
- Have outdated wiring systems
- Require additional safety upgrades
- Need more labour due to structural limitations
This can increase costs by 15–30%.
Condition of Walls and Floors
Rewiring often involves chasing walls and lifting floors:
- Minimal damage (modern builds): Lower costs
- Solid brick or concrete walls: Higher labour costs
Plastering and redecorating are usually not included.
Consumer Unit Upgrade
A new consumer unit typically costs:
- £400 – £800
This is essential for compliance with modern safety standards.
Number of Sockets and Fixtures
More sockets, switches, and lighting points increase costs:
- Standard socket installation: £50 – £100 per point
- LED downlights: £60 – £120 each
Smart Home and Modern Features
Adding features like:
- Smart lighting
- Home automation
- EV charging points
Can increase total costs by £1,000 – £5,000+, depending on complexity.
Labour Costs in London
London has higher labour rates compared to the rest of the UK:
- Electrician day rate: £250 – £400
- Team of electricians: £500 – £800 per day
Labour typically accounts for 60–70% of the total rewiring cost.
Partial Rewire vs Full Rewire
Partial Rewire
- Cost: £1,500 – £5,000
- Suitable for newer properties or targeted upgrades
Full Rewire
- Cost: £3,500 – £18,000+
- Recommended for properties over 25–30 years old
A full rewire ensures long-term safety and compliance.
How Long Does It Take to Rewire a House?
Typical timelines:
- 1–2 bed property: 2–5 days
- 3-bed house: 5–10 days
- 4–5 bed house: 7–15 days
Occupied homes may take longer due to phased work.
Signs Your Property Needs Rewiring
You may need a rewire if you notice:
- Flickering lights
- Frequent circuit breaker trips
- Burning smells or discoloured sockets
- Old fuse box with no RCD protection
- Fabric or rubber-insulated wiring
If your property hasn’t been rewired in 25–40 years, it’s worth getting an inspection.
Electrical Regulations and Compliance in 2026
All rewiring work in London must comply with:
- BS 7671 Wiring Regulations (18th Edition + amendments)
- Part P Building Regulations
After completion, you should receive:
- Electrical Installation Certificate (EIC)
- Building Control notification (if applicable)
Hidden Costs to Consider
Rewiring often comes with additional costs:
- Plastering and redecorating: £500 – £3,000+
- Floor repairs: £200 – £1,000
- Temporary accommodation (if needed)
Always budget an extra 10–20% contingency.
How to Reduce Rewiring Costs
Rewire Before Moving In
An empty property can reduce labour costs by 10–20% and speed up the process.
Combine with Renovations
If you’re already renovating:
- Save on labour overlap
- Reduce redecoration costs
Plan Socket and Lighting Positions Early
Avoid last-minute changes, which can significantly increase costs.
Choose Standard Fixtures
High-end fittings can quickly increase your budget. Opt for standard options where possible.
Get Multiple Quotes
Always compare at least 2–3 quotes to ensure fair pricing.
Avoid Unnecessary Extras
Focus on essential upgrades first—additional features can be added later.
Is Rewiring Worth the Investment?
Yes—rewiring is one of the most important upgrades you can make.
Benefits include:
- Improved safety
- Increased property value
- Lower risk of electrical faults
- Compliance with modern regulations
In London’s competitive property market, a recently rewired home is a strong selling point.
Why Choose Route Electrical for Your Rewire in London?
At Route Electrical, we specialise in professional, high-quality rewiring services across London. Whether you’re upgrading a 1-bedroom flat or a large family home, our experienced electricians deliver safe, compliant, and efficient solutions tailored to your needs.
What You Can Expect:
- Transparent pricing with detailed quotes
- Fully qualified and certified electricians
- Compliance with all UK regulations
- Minimal disruption and clean workmanship
- Fast turnaround times
We understand that rewiring is a significant investment, and we’re here to guide you every step of the way.
Get a Free Quote from Route Electrical
If you’re planning a rewire in London in 2026, the best way to get an accurate cost is through a professional assessment.
Contact Route Electrical today for:
- Free, no-obligation quote
- Expert advice tailored to your property
- Competitive pricing across all property sizes
Let us help you make your home safer, more efficient, and future-ready.
