If you've just had an EICR come back with "unsatisfactory" stamped across it, or you've noticed your fuse box still has a wooden back and round-pin sockets, you're probably here for one reason: you want a straight answer on house rewiring London costs, not another vague "it depends" from a call centre.
Here's the direct answer: a full house rewire in London typically costs between £4,500 and £13,500, depending on property size, age, and access. A one-bed flat sits at the low end. A five-bed period house with solid walls and no rear access sits at the top. Everything in between depends on the factors this guide walks through.
What makes London different from a generic UK rewiring guide isn't just higher labour rates — it's leasehold flats needing freeholder sign-off, conservation areas restricting how walls can be chased, and Victorian terraces with no side access forcing every cable drum through the front door. None of that shows up in a national average, so let's get into what actually drives your number.
How Much Does House Rewiring Cost in London?
For a standard property with reasonable access and no major complications, expect to pay roughly £4,500 for a one-bed flat up to £13,500 for a large five-bed house, including materials, labour, testing, and certification.
Here's a realistic breakdown by property size:
| Property size | Typical full rewire cost (London) |
|---|---|
| 1-bed flat | £4,000 – £5,500 |
| 2-bed flat/maisonette | £5,000 – £7,000 |
| 2-bed terraced house | £5,500 – £7,500 |
| 3-bed house | £6,500 – £10,000 |
| 4-bed house | £9,000 – £13,000 |
| 5-bed house or period property | £12,000 – £18,000+ |
A word of honesty: any electrician quoting you a fixed number over the phone, before seeing your property, is guessing. These ranges exist because your actual cost depends on things a phone call can't reveal — wall construction, existing circuit layout, and whether your electrician can park within fifty metres of your front door. Treat every online figure, including this table, as a planning tool, not a quote.
Rewiring cost London also shifts noticeably by borough — not because the electrical work changes, but because parking, congestion charging zones, and travel time do. A job in Zone 1 or 2 will often carry a modest premium over the same job in outer London, purely from access friction.
Rewiring a 3-Bedroom House in London — A Realistic Cost Breakdown
A 3-bedroom house is the single most-searched property size for rewiring, and it typically lands between £6,500 and £10,000 in London, depending on the property's age and how much of that budget goes toward making good afterwards.
Here's what that number is actually built from, using a fairly typical job as an example — a 1930s three-bed semi in outer London, occupied during the work, standard fittings throughout:
| Line item | Typical allowance |
|---|---|
| Core rewire (cabling, first and second fix labour) | £5,800 |
| New consumer unit with RCBOs | £550 |
| Extra sockets beyond standard allowance (5 added) | £250 |
| Testing, certification, and Building Regs notification | Included |
| Basic making good (patch plastering only) | £400 |
| Subtotal | £7,000 |
What's missing from that total, deliberately, is full plastering and redecorating — almost no rewiring quote includes this, and it's the single biggest source of "why did my final bill end up higher" complaints. Budget separately for a plasterer and decorator once the electrical work is done. For the same house, that's typically another £800–£1,500 depending on how many rooms need a full skim rather than patching.
What Affects the Price of a House Rewire in London?
The price of your rewire is shaped by seven things: property size, wall construction, whether the home is occupied, consumer unit specification, fittings quality, and — specifically in London — access and parking.
Property size and circuit count. More rooms mean more sockets, more lighting points, and more cable runs back to the consumer unit. This is the most obvious factor and the one every quote starts from.
Wall construction. Solid brick walls, common in Victorian and Edwardian London terraces, need to be "chased" — a channel cut into the plaster to bury the cable — which is slower and dustier than running cable through stud walls or under floorboards. Expect this to add time, not just materials.
Occupied vs empty. An empty property lets an electrician move room to room without protecting furniture or working around daily life. If you can arrange to be out, even for the messiest few days, it's worth asking your electrician what that saves.
Consumer unit specification. A standard consumer unit with RCD protection runs around £350–£500. Upgrading to individual RCBOs per circuit — so one faulty circuit doesn't trip your entire house — typically adds £150–£300, and is worth it if you've ever lost power to the whole property because of one dodgy appliance.
Fittings level. Standard white plastic sockets and switches cost a few pounds each. Brushed steel, matte black, or smart-enabled versions can run to £20–£100+ per point. A common approach is going premium in rooms guests see and standard everywhere else — hallway and lounge get the nice finish, utility cupboard gets plain white.
While your walls are open, it's also worth planning for other power-hungry additions rather than retrofitting them later — running a dedicated circuit for an EV charger installation at the same time is far cheaper than adding one after the plaster's gone back on.
Access and parking — the London-specific factor nobody else explains properly. A huge number of London terraces have no side or rear access, meaning every cable drum, consumer unit, and bag of rubble has to go through the front door and down the hallway. Combine that with a Controlled Parking Zone, and your electrician may be carrying tools from a van parked two streets away. This isn't a hypothetical — it's a routine part of quoting inner London jobs, and it's part of why identical work costs more here than in a town with a driveway on every street.
Rewiring an Older or Period Property in London
If your home was built before 1960, expect your rewire to cost more and take longer than the standard tables suggest — not because the wiring itself is different, but because of what's hiding behind the walls.
London's housing stock skews heavily toward Victorian, Edwardian, and Georgian properties, and that brings three specific complications a generic UK guide won't mention:
Lath and plaster walls. Instead of modern plasterboard, older properties often have timber laths with plaster pressed into the gaps. Chasing cable into this is more delicate work — crack it wrong and you're looking at a much bigger patch repair than expected.
Asbestos risk. If your property was built or renovated between the 1930s and 1980s, textured coatings, old floor tiles, or insulation board can contain asbestos. A competent electrician should flag this before opening up walls or lifting floors, and testing typically adds £200–£400 if anything looks suspect. This isn't scaremongering — it's a standard precaution, and any electrician who doesn't mention it when working on a pre-1980s property is cutting a corner.
Conservation areas and listed buildings. This is the part almost nobody explains properly. If your property sits in a conservation area, or is itself listed, chasing original plasterwork, cornicing, or period features may not be permitted. The workaround is usually surface-mounted conduit — cable run in a visible or discreetly boxed channel rather than buried in the wall. It's a different look, and often a different price, and it's worth knowing before you're mid-quote and surprised by it. Check your property's status on your local council's planning portal before booking anyone; it takes under a minute.
Full Rewire vs Partial Rewire — Which Do You Need?
If your wiring is over 25–30 years old, uses rubber or fabric-sheathed cable, or your fuse box still has a wooden back with rewireable fuses, a full rewire is the honest recommendation — a partial fix is usually delaying the inevitable.
That said, a partial rewire genuinely makes sense in specific situations:
- Kitchen circuit upgrade (£1,200–£2,500) — often needed on its own when adding an induction hob, dishwasher, and multiple appliances to a circuit designed for a kettle and a fridge.
- Bathroom circuit work (£600–£1,200) — installing a dedicated, correctly zoned circuit for an electric shower or underfloor heating.
- Loft conversion wiring (£900–£1,800) — new circuits and fire-rated downlights for a converted loft, without touching the rest of the house.
- Lighting circuit only (£800–£1,500) — common in older homes where the original lighting circuit has no earth wire, a genuine safety issue on its own.
Here's the honest trade-off: three separate partial jobs spread over five years will almost always cost more in total than one properly planned full rewire, because you're paying for three separate call-outs, three separate bits of making good, and three lots of disruption. If your electrics are approaching the 30-year mark anyway, it's usually cheaper in the long run to do it once, properly.
Rewiring a Flat vs a House in London
If you own a leasehold flat, the first step in your rewire isn't calling an electrician — it's getting written permission from your freeholder or managing agent, because no electrician can start work on shared building infrastructure without it.
This is the single most overlooked part of rewiring in London, and it's exactly why leaseholders often stall before they even get a quote. Here's what actually needs to happen:
1. Written request to your freeholder or management company. Be specific: which flat, what work, and confirmation you're not altering anything structural or shared beyond the electrical supply itself.
2. Check whether your consumer unit is individual or shared. Many older conversions run several flats off a shared distribution board. Your electrician needs to confirm there's isolated, dedicated capacity for your flat before quoting.
3. Realistic timeline for consent. Anywhere from two weeks to a couple of months, depending on how responsive your management company is and whether it needs sign-off from a wider residents' committee.
4. If consent is refused, ask why. It's often a fixable concern — cable routing through a communal hallway, for example — rather than a blanket no.
Practically, a flat rewire is usually faster than a house rewire simply because there's less floor area and fewer circuits — a one-bed flat might take 3–5 days against 7–10 for a similar-sized house. But the consent process can eat up more calendar time than the electrical work itself, so start that conversation early, ideally before you've set your heart on a completion date.
How Long Does House Rewiring Take?
A typical London house rewire takes between 4 and 15 working days, depending on property size, whether it's occupied, and how easily your electrician can access the property and park nearby.
| Property type | Typical duration |
|---|---|
| 1-bed flat | 3–5 days |
| 2-bed flat/house | 5–7 days |
| 3-bed house | 7–10 days |
| 4–5 bed house | 10–15 days |
Three things specifically extend timelines in London beyond what the table shows. First, occupied properties always take longer than empty ones — working around furniture and daily life adds friction every single day. Second, flats in managed buildings often have restricted working hours (no noisy work before 9am or after 5pm, for instance), which can stretch a five-day job into two calendar weeks. Third, access and parking delays compound daily — losing twenty minutes each morning carrying tools from a distant parking spot adds up over a ten-day job.
One thing that's easy to forget: the timeline above covers electrical work only. Plastering and redecorating afterwards is a separate job, on a separate schedule, usually booked once the electrician has signed off.
Signs Your House Needs Rewiring
The clearest signs your house needs rewiring are frequent tripping, flickering lights, warm or scorched sockets, buzzing noises, and a fuse box that still uses rewireable fuses instead of modern circuit breakers.
Specifically, watch for:
- Your consumer unit trips regularly, especially when using multiple appliances at once
- Lights flicker without an obvious cause like a loose bulb
- Sockets feel warm or show scorch marks around the edges
- You hear buzzing or crackling from switches or sockets
- Your fuse box has a wooden back or uses rewireable fuse wire rather than trip switches
- You still have round-pin sockets anywhere in the property
- Cables are rubber or fabric-sheathed, visible in a loft or under floorboards
Electricians generally use 25–30 years as a rough rule of thumb for when a rewire should be considered, even without obvious symptoms — insulation degrades quietly, and a system that was safe when installed can fall short of current standards decades later without ever visibly failing.
If you're not sure whether you're looking at a genuine problem or just an old but functional system, an Electrical Installation Condition Report (EICR) is the way to find out for certain rather than guessing from a checklist.
What's Included in a House Rewiring Quote?
A properly itemised rewiring quote should specify the number of sockets and lighting points per room, the consumer unit spec, testing and certification, and clearly state what's excluded — most commonly plastering, decorating, and flooring.
A quote that just says "full house rewire — £7,500" with no breakdown is not something you can meaningfully compare against another quote. Before accepting any quote, ask:
- How many points per room? A vague quote might allow for fewer sockets than you actually want.
- Is the consumer unit included, and what spec? Standard RCD protection or individual RCBOs per circuit?
- Is testing and certification included? It should be — this isn't an optional extra, it's how the work gets legally signed off.
- Is making good included, and to what standard? Basic patch repair is very different from a paint-ready finish.
- Are fittings included, or supply-only? If you want premium switches, check whether you're buying them or the electrician is.
- Is VAT included in the headline figure? A surprising number of quotes are shown ex-VAT, adding 20% at invoice stage.
Getting these answers in writing, from at least two or three electricians, is the only way to genuinely compare like for like rather than just comparing bottom-line numbers that might mean very different things.
VAT and Grants — Can You Reduce the Cost?
If the property has been empty for two years or more before work starts, rewiring can qualify for a reduced 5% VAT rate instead of the standard 20% — a detail that can save well over £1,000 on a typical job and is worth checking before you assume the full-rate price is fixed.
This applies under HMRC's VAT guidance for renovating empty properties, and it's a genuinely underused fact — it rarely comes up unprompted in quotes, so ask your electrician directly whether your property qualifies, and confirm current eligibility criteria with HMRC or an accountant before relying on it.
Beyond that, general grants specifically for house rewiring are limited. There's no dedicated "rewiring grant" for most homeowners. Where support does exist, it's usually tied to broader energy-efficiency schemes (such as measures linked to heat pump or insulation upgrades) and typically targeted at low-income households or specific circumstances — worth a quick check if you fall into one of those categories, but not something most London homeowners should plan around.
Part P, Certification and Making Sure the Work Is Legal
A full house rewire is notifiable work under Part P of the Building Regulations, meaning it must be carried out by someone registered with a Competent Person Scheme and must be properly certified on completion.
In practice, this means your electrician should be registered with NICEIC, NAPIT, or ELECSA — these schemes allow electricians to self-certify their own notifiable work, rather than needing separate sign-off from council Building Control.
Two certificates get mentioned constantly in this space, and they're not the same thing:
- EICR (Electrical Installation Condition Report) — an inspection of your existing wiring, telling you whether it's safe, needs remedial work, or requires a full rewire.
- EIC (Electrical Installation Certificate) — issued after new work is completed, confirming it meets current wiring regulations (BS 7671).
You should walk away from a rewire with an EIC, not an EICR — if your electrician only offers the latter, something's been missed. Keep this certificate safely; you'll need it if you sell the property, and mortgage surveyors increasingly ask for it on older London homes.
Rewiring a Rental Property or HMO in London
Landlords in England are legally required to have electrical installations inspected and tested at least every five years, and HMOs carry additional requirements on top of that baseline under local licensing conditions.
If you're renting out a London property, a full EICR is the starting point, not a rewire — it tells you whether the wiring is satisfactory or needs work. For a standard single-let, the five-year cycle applies. For a licensed House in Multiple Occupation (HMO), your local council's licensing conditions often require more — check with your specific borough, since requirements vary.
Practically, the best time to schedule rewiring or major electrical work is between tenancies, not during one. This avoids void-period disputes over access, cuts down on disruption complaints, and means the property can be re-let with a fresh, current EIC in hand — a genuine selling point to prospective tenants in a competitive London rental market.
Related reading: our guides on consumer unit upgrade costs and signs your home needs rewiring cover this in more depth.
Frequently Asked Questions
How much does it cost to rewire a 3-bedroom house in London?
A 3-bedroom house rewire in London typically costs between £6,500 and £10,000, including labour, materials, a new consumer unit, and certification. Plastering and redecorating afterwards are usually separate.
How long does a house rewire take?
Most take between 4 and 15 working days depending on property size. A 1-bed flat might take 3–5 days; a large 4–5 bed house can take up to 15, particularly if occupied or access is restricted.
Can I live in my house while it's being rewired?
Yes, but expect real disruption — dust, noise, and periods without power. Many homeowners choose to move out for the messiest few days, particularly in smaller properties where there's nowhere to retreat to.
Does rewiring include plastering and redecorating?
Almost never as standard. Most quotes cover basic patch repair where walls have been chased, but full plastering and decorating to a paint-ready finish is typically a separate job with a separate electrician.
Do I need planning permission to rewire a house?
No — rewiring itself doesn't need planning permission. It does need to comply with Part P of the Building Regulations and be certified by a Competent Person Scheme member.
Is rewiring covered by home insurance?
Generally, no — rewiring is considered maintenance, not an insured event, unless it's directly linked to something like fire or flood damage. Check your specific policy for exclusions.
How often should a house be rewired?
Electricians typically recommend considering a rewire every 25–30 years, even without visible problems, since insulation and safety standards both degrade and move on over that timeframe.
Do I need a full rewire if I live in a flat?
Not necessarily — flats often need fewer circuits than houses, so a full rewire is usually quicker. But you'll need written freeholder or management company consent before any work starts, which can take longer than the electrical work itself.
Ready to Get Your House Rewired?
Every London property is different, and the only way to get a genuinely accurate number for yours — flat or house, period conversion or new build — is a proper site survey, not a guess from a table. Our electricians cover every London borough, handle your Part P notification and certification for you, and give you a clear, written, itemised quote before any work starts — no vague "from" prices and no surprises on invoice day. Get in touch with our team for a free house rewiring quote in London today, and we'll talk you through exactly what your rewire would involve, room by room, start to finish.
