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Cost to Rewire a House

How much does it cost to rewire a house? The national average cost to rewire a house is between £3250 and £3500, with prices rising as high as £4750+ for a 4/5 bed house. Factors affecting the cost of a house rewire are discussed below, the most significant being the size and type of property, i.e. number of bedrooms and whether the property is a house, flat, terrace or bungalow.
Low Cost £2775
National Average Cost £3,250 – £3,500
High Cost £4,750
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The average cost to rewire a house is £3,300 with a total range from £1,850 to £4,000 or more depending on the size of the house. The average cost to rewire a bungalow is £3,500 but will range from £3,000 for a 2 bed bungalow to £4,500 for a larger 4 bed bungalow.

This rewiring cost table gives the ranges for the most common types of house. Factors that determine the cost to rewire a house and a breakdown of house rewiring costs follow below.

Cost to Rewire a House or Bungalow
2 bed Mid-terrace 3 bed Semi-detached 3 bed Bungalow 4/5 bed Detached
Average Cost £2,775 £3,250 £3,500 £4,750
Cost Range £1,850 – £3,300 £2,800 – £4,000 £3,000 – £4,350 £3,875 – £5,500

House Rewiring Cost Factors

How much does it cost to rewire a house?

Where in the range your project falls depends on these factors.

  • House Size: Larger homes have more wiring, sockets and larger consumer units, so cost is higher. Average costs are £400-£600 per room or £850-£1,100 per bedroom.
  • Home Layout: Multi-storey homes are more difficult, and therefore costlier, to rewire than single-storey homes.
  • Ease of Access: When the consumer unit and old wiring are difficult to access, cost might be higher.
  • Vacant or Occupied: The work goes more slowly when the house is occupied, so cost rises.
  • The Type, Quality and Number of Fixtures and Fittings: Fittings and fixtures come in basic, better and best types, and cost goes up as quality increases.
  • Your Location: Contractor costs vary across the UK. They are typically higher in the South and in and around London than in northern regions.
  • Whether you Have an Electrical Conditions Report Made: An electrician can evaluate the condition of your home’s electrical system to determine whether it needs replacing. If you have a report made, the cost is £120-£350 based on the size of the home.
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What Does a House Rewire Include?

All the electrical equipment is replaced. This involves:

  • Disconnecting and removing all fixtures, switches and sockets
  • Removing the consumer unit or units
  • Removing all electrical cable
  • Installing new wire, consumer units, fixtures, switches and sockets
  • Replacing the electric meter, if necessary
  • Having the installation inspected
  • Issuing of the approved installation certification

Reasons to Rewire Your House

Some homeowners rewire a home in response to failing wiring.

Signs of wiring problems include:

  • Burning smell or warm walls around a socket or switch – Turn off the power and call an electrician immediately
  • Fuses burning out or circuit breakers tripping frequently
  • Flickering lights when changing or tightening a bulb isn’t enough
  • Arching in plugs or switches – If you see arching or hear popping in plugs or switches, do not use them. Call an electrician at your first convenience.
  • The wiring is aluminium. It should be replaced soon with copper cabling, which is safer.

Others replace wiring proactively before problems arise. For example, if the plastering is removed during an extensive remodel, it makes sense to replace old wiring, switches and sockets rather than covering them up and hoping for the best.

Permitting and Building Reg’s Requirements

You can do electrical work in your own home, according to Building Regulations Part P, Section 2.

To summarise the essentials of the document, any homeowner can make minor repairs and changes to the electrics such as replacing a light fixture or adding a socket to an existing fixture.

Electrical work in areas of bathrooms, kitchens and anywhere water may be present is considered “notifiable.”

This mean you must be a certified electrician or hire one to do the work, and the local authorities must be notified, so that the work can be inspected.

Is Rewiring a DIY Job?

Only if you have the proper qualifications, as discussed above. Due to the danger of electrocution and electrical fire, we recommend hiring a qualified electrician for any work above the simplest jobs.

If you’d like to get free quotes without obligation, our Quotes service can help. You’ll receive quotes from top electricians in your area that have been screened for expertise and experience.

Time Schedule

How long does it take to rewire a house? 4-5 days minimum for flats and small homes, and up to 2 weeks, possibly longer, for very large houses.

The schedule depends on the cost factors mentioned above. Here are average times for the homes in the table above:

  • 2-bedroom mid-terrace: 5-8 days
  • 3-bedroom semi-detached: 6-9 days
  • 3-bedroom detached: 7-10 days
  • 4+ bedroom detached: 10-14 days

If you’re living in the home when the work is done, the time to complete it will be at the upper end of the range. When you request quotes from electricians, expect that some will require you to move out of the house during the works. You might wish to do this for your own convenience.

If you want temporary power connected each night, it might exceed the time frame. Cost might rise too, because electricians charge per hour of labour.

If you request job changes once the work has begun, it might cause delays and extra costs.

Here’s how the work might proceed on a 3-bedroom house:

  • Remove fixtures, sockets, switches and the old consumer unit: 2-3 days
  • Remove the old cabling: 1-2 days
  • Install new cabling: 2-3 days
  • Install new light fittings, sockets and switches: 1-2 days
  • Complete the installation: 1-2 days

Cost of Minor Electrical Repairs

Short of rewiring the house, here are costs for small jobs.

  • Evaluating the condition of the electrics: £120-£350
  • Consumer unit replacement: £260-£425
  • Replacing a socket, switch or light fitting: £25-£50 per location
  • Installing outdoor security lighting: £100-£200 based on the number of lights and their type
  • Replacing a light fixture: £30-£40 per fixture
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House Rewiring FAQ

Hopefully, you have found this guide to house rewiring costs useful, we also have some common questions often asked by people looking to rewire their home.

Q. How often should a house be rewired?

A. Your home should be rewired only when its required and you have been advised by qualified electrician that it needs to be done following his inspection of your home. Some electricians believe that rewiring only needs to be completed every 25 -30 years, which will also depend on quality of your wiring.

Q. Will I need planning permission to get my home rewired?

A. Usually all improvements made inside your home can be carried out without planning permission, this will also include your home rewiring. However, this will be different if you are making changes to a listed or protected building, you will then need to speak to your local council for advice.


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