How Much Does It Cost to Rewire a House in London?

If you are planning a full rewire in London, a sensible 2026 starting budget is usually £3,500 to £5,500 for a small flat and £6,000 to £10,000 for a typical three-bedroom house. Larger London homes, older properties, high-spec finishes or difficult access can push the total to £14,000 or more.

Those figures are planning ranges, not fixed quotes. The real cost to rewire a house in London depends on the size of the property, how many sockets and lighting points you want, whether the home is occupied, and how much making good is included afterwards.

For this job, you need a qualified electrician rather than a general builder. On HaMuch, rewiring sits under the Electrician trade category, and you can benchmark current London electrician rates before you start comparing quotes.

Cost to rewire a house in London by property size

Here is a practical guide to typical full house rewire costs in London. These prices assume a standard domestic rewire with normal access, standard fittings and testing included. Always check whether VAT, plastering, decorating, waste removal and parking costs are included in your quote.

A three-bedroom London house is the most common benchmark homeowners ask about. For that type of property, many quotes fall somewhere around £6,000 to £10,000, but it is completely possible for the quote to sit outside that range if the house is large, occupied, heavily renovated or needs a lot of making good.

Why rewiring costs more in London

London electrical work is often more expensive than the UK average because labour rates, travel time, parking, congestion and access restrictions all add pressure to the final price. Even a simple job can take longer if an electrician has to park streets away, work around controlled parking hours or carry tools through communal entrances.

London properties can also be more complicated. Flats may need permission from a freeholder or managing agent. Older terraced houses may have layers of previous electrical work hidden behind walls or under floors. Period homes can be harder to chase into neatly, and modern refurbishments often need more sockets, lighting zones and data points than older wiring was designed for.

This is why one national average can be misleading. A London rewire quote should be based on a proper look at the property, not just a quick estimate by bedroom count.

What affects the final price?

A rewire is labour-heavy, but the quote is not only about how many days the electrician is on site. The price is shaped by the layout, condition and specification of the home.

The biggest surprise for many homeowners is making good. Electricians often repair chases to a basic safe finish, but full plastering and decorating may be quoted separately. If you expect the walls to be paint-ready at the end, make that clear before work starts.

What should a full rewire quote include?

A proper full rewire quote should clearly explain the scope of work. It should not just say “rewire house” with one total price.

A clear quote will usually set out:

• The rooms included in the rewire
• The number of sockets, switches and light points allowed for
• Whether a new consumer unit is included
• Whether smoke alarms, extractor fans or outdoor power are included
• Whether old wiring will be removed where accessible
• Whether chasing, lifting floorboards and reinstatement are included
• Whether testing, certification and Building Regulations notification are included
• Whether VAT, parking, waste disposal and materials are included

A full domestic rewire is notifiable electrical work under Part P of the Building Regulations. In plain English, that means the work must be carried out and certified properly. You can read more about competent person schemes on the UK Government website, but the simple rule is this: make sure your electrician is qualified to do the work and provide the right paperwork afterwards.

After a new installation, you should normally receive an Electrical Installation Certificate, often shortened to EIC. This is different from an EICR, which is an inspection report on an existing installation.

Do you need a full rewire or an electrical inspection first?

Not every electrical problem means the whole property needs rewiring. If you are unsure, an Electrical Installation Condition Report, known as an EICR, can help identify whether the installation is satisfactory, needs remedial work, or is no longer safe for continued use.

If you are buying a property, renovating a rental home or dealing with repeated electrical faults, it can be sensible to start with an inspection. Our guide to EICR electrical safety certificate costs explains what is usually involved and how prices vary by property type.

For landlords in England, electrical safety rules are especially important. The Government’s private rented sector electrical safety guidance says rental properties must have electrical installations inspected and tested at least every five years by a qualified person.

Signs that a property may need serious electrical work include an old fuse box, very few sockets, frequent tripping, scorch marks, buzzing sounds, damaged accessories, or wiring that appears very old. If you notice burning smells, heat around fittings or visible damage, stop using the affected circuit and speak to an electrician urgently.

Should you add more sockets during a rewire?

In many London homes, older wiring was designed for a very different way of living. A single bedroom may once have needed one socket. Today, the same room might need power for chargers, lamps, a desk, a TV, a router extender and a heater.

Adding sockets during a rewire is usually more practical than adding them later, because floors and walls may already be opened up. That does not mean extra points are free, so ask the electrician how many are included in the base quote and how much additional points will cost.

If you are only planning a smaller upgrade rather than a full rewire, our guide to the cost of installing a new electrical socket gives a clearer breakdown for that specific job.

Example budget for a three-bedroom London rewire

To make the figures easier to picture, here is a realistic planning example for a three-bedroom terraced house in London. This is not a quote, but it shows how the total can build up.

For an empty property, a rewire is usually faster and less disruptive. For an occupied home, expect more planning. Furniture may need moving, rooms may be unavailable, and power may be off for periods during the day. Some families choose to move out for the messiest stage, especially if children, pets or home working are involved.

How long does a London house rewire take?

A small flat may take around a week. A typical three-bedroom house might take two weeks, sometimes longer if the property is occupied or access is difficult. Larger houses, period properties and homes being rewired alongside building work can take several weeks.

The timescale should be discussed before work begins. Ask how many electricians will be on site, whether work will happen continuously, and when power is likely to be unavailable. If the rewire is part of a wider renovation, the electrician may need to coordinate with builders, plasterers, kitchen fitters or decorators.

Timing matters in London because access, parking and neighbouring properties can all affect the working day. If you live in a flat, also check building rules about working hours, lift use and noise.

How to compare rewire quotes properly

The cheapest quote is not always the best quote, and the most expensive quote is not automatically the safest. What matters is whether you are comparing like for like.

When you receive quotes, check:

• Whether each electrician has quoted for the same number of rooms and points
• Whether the consumer unit is included
• Whether testing and certification are included
• Whether making good is included, and to what standard
• Whether fittings are basic white, decorative or supplied by you
• Whether VAT is included
• Whether parking, congestion costs or waste disposal are extra
• Whether the electrician is appropriately qualified and insured
• Whether the quote is fixed price or based on a day rate

This is where HaMuch is useful. Many comparison sites ask you to submit details before you see much about pricing. HaMuch is built around transparent, comparable pricing by trade and location, alongside local listings and genuine customer reviews, so you can compare first and decide afterwards.

Frequently asked questions

How much does it cost to rewire a 3-bedroom house in London? A typical three-bedroom house rewire in London often costs around £6,000 to £10,000. The final price depends on the layout, access, number of sockets, consumer unit, finish level and whether making good is included.

Is rewiring a house cheaper if the property is empty? Usually, yes. An empty property is easier and quicker to work in because electricians can lift floors, chase walls and move between rooms without working around furniture or occupants. The quote may still depend more on the condition and specification than occupancy alone.

Can I live in my house while it is being rewired? Sometimes, but it can be disruptive. Rewiring creates dust, noise and periods without power. For a full London house rewire, many homeowners choose to move out temporarily if they can, especially during the messiest stages.

Does a rewire include plastering and decorating? Not always. Some electricians include basic patching where walls have been chased, but full plastering and decorating are often separate. Ask exactly what “making good” means in the quote.

Do I need an EICR before rewiring? If the wiring is clearly outdated or unsafe, an electrician may recommend a rewire after inspection. If you are unsure about the condition, an EICR can be a useful first step because it records the state of the existing installation.

Will a rewire add value to my London property? A safe, modern electrical installation can make a property more attractive to buyers and tenants, especially if the old wiring was a concern. It is best thought of as a safety and reliability improvement rather than a guaranteed profit-making upgrade.

Compare London rewire quotes with HaMuch

A full house rewire is a major job, so it is worth comparing clear, itemised quotes before you book. Check what is included, ask about certification, and make sure you are comparing electricians on the same scope of work.

With HaMuch, you can compare local electricians, see transparent pricing information and request quotes for free with no obligation to book. Start with real London pricing, then choose the electrician who gives you the clearest, most suitable quote for your property.