How Much Does a House Rewire Cost in South London? (2026 Guide)
Wondering what a full house rewire costs in South London? We break down pricing by property size, explain what's included, and share the warning signs that mean you need one.
How Much Does a House Rewire Cost in South London? (2026 Guide)
If you've been told your property needs a rewire — or you've noticed some worrying signs with your electrics — the first question is usually: how much is this going to cost?
As NICEIC-registered electricians based in South West London, we carry out house rewires across Wandsworth, Clapham, Wimbledon, Balham, Tooting, Kew, and Richmond every week. Here's an honest breakdown of what you can expect to pay in 2026.
House Rewire Costs in South London: A Quick Guide
Prices vary depending on the size of your property, the condition of the existing wiring, and whether any additional work is needed (such as a new consumer unit or extra circuits). As a general guide:
| Property Size | Typical Cost |
|---|---|
| 1-bedroom flat | From £1,800 |
| 2-bedroom house | From £2,500 |
| 3-bedroom house | From £3,500 |
| 4-bedroom house | From £4,500 |
| 5+ bedroom house | From £6,000 |
These are starting prices for a straightforward rewire. Properties with complex layouts, multiple floors, or particularly old wiring (pre-1960s rubber-insulated cables) may cost more. We always carry out a free survey before providing a written fixed-price quote — so there are no surprises.
What's Included in a Full House Rewire?
A full house rewire from Olectrics Ltd includes:
- Full strip-out of all existing wiring throughout the property
- New twin & earth cabling to current BS 7671 (18th Edition) standards
- New consumer unit (fuse board) with RCD protection
- New sockets and switches throughout all rooms
- New lighting circuits with LED-compatible wiring
- Interlinked smoke detectors on every floor
- Part P certification submitted to your local authority
- Completion certificate issued on the day
Everything is included in the fixed price. We don't add extras at the end.
Why Do South London Properties Often Need Rewiring?
South London has a huge stock of Victorian and Edwardian housing — terraces, conversions, and period flats that were built between 1880 and 1930. Many of these properties still have wiring that was installed decades ago, and while it may have been fine at the time, it simply wasn't designed for the electrical demands of a modern household.
Common issues we find in South London properties include:
- Rubber-insulated wiring (pre-1960s) that has become brittle and cracked
- Aluminium wiring (common in 1960s–70s properties) that can cause overheating at connections
- Old-style fuse boards with no RCD protection
- Insufficient circuits for modern appliances, EV chargers, or home offices
- Wiring that fails an EICR (Electrical Installation Condition Report) with a C1 or C2 code
Signs You Need a House Rewire
You don't always need to wait for an EICR to know something is wrong. Watch out for:
1. Pre-1970s wiring If your property was built before 1970 and has never been rewired, the wiring is likely at or beyond the end of its safe working life.
2. Round pin sockets or bakelite fittings These are a clear sign of very old wiring that should be replaced as a priority.
3. Persistent tripping If your fuse board trips regularly — especially when you plug in appliances — it's a sign the circuits are overloaded or the wiring is failing.
4. Burning smell or scorch marks Any smell of burning near sockets or switches, or visible scorch marks, is a serious warning sign. Switch off at the mains and call an electrician immediately.
5. Flickering lights Occasional flickering can be a loose bulb. Persistent flickering across multiple rooms usually points to a wiring fault.
How Long Does a House Rewire Take?
Most rewires in South London take between 3 and 7 working days, depending on the size of the property:
- 2-bedroom house: 3–5 days
- 3-bedroom house: 5–7 days
- 4-bedroom house: 7–10 days
In most cases you can remain in the property during the rewire, though you should expect some disruption — particularly loss of power to certain circuits during the day. We clear all debris at the end of each working day.
Do I Need to Redecorate After a Rewire?
Yes — a rewire does involve lifting floorboards, chasing walls, and some surface work. We take care to minimise damage and protect your belongings, but you should budget for minor redecoration (filling and painting) after the work is complete. Many of our customers use the rewire as an opportunity to redecorate anyway.
Why Choose Olectrics for Your South London Rewire?
- NICEIC registered — all work independently inspected for quality and safety
- Part P certified — we handle all notifications to your local authority
- Fixed-price quotes — no hidden costs, ever
- Local to South London — we cover Wandsworth, Clapham, Wimbledon, Balham, Tooting, Kew, Richmond, and surrounding areas
- Free survey — we visit your property before quoting, so the price is accurate
Get a Free Quote for Your South London Rewire
If you're in Wandsworth, Clapham, Wimbledon, Balham, Tooting, or anywhere across South West London, call us on 07946 436585 or email [email protected] for a free, no-obligation survey and fixed-price quote.
We'll visit your property, assess the existing installation, and give you a written price before any work begins.
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Written by
Danny O'Leary
Content creator and writer sharing insights and stories.
