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Cost of Rewiring a House

Thinking about some house rewiring? Take a look at our guide which sets out estimated house rewiring prices, as well as everything else you need to know about house rewiring, including timescales and the problems with this type of job.

6 - 10 days
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Introduction to House Rewiring Costs

Is your property more than thirty years old? If so, you may want to consider having your entire rewired if you have not done so already.

This will ensure your home is safe from the risk of electrical fires and will also improve energy efficiency, resulting in reduced electric bills and a reduced carbon footprint.

You can also increase your home value by updating your wiring, along with the added benefit of new light fixtures and sockets.

House rewiring involves removing outdated wiring and installing updated wiring to meet modern electrical standards.

To help you understand the costs associated with house rewiring, take a look at our guide which sets out estimated house rewiring prices, as well as everything else you need to know about house rewiring, including timescales and the problems with this type of job.

How Much Does it Cost to Rewire a House?

The average cost of rewiring a house ranges from £1900 for a one-bedroom bungalow up to £6000 for a five-bedroom detached home.

The price of rewiring will vary depending on the condition of your existing wiring, as well as how many electrical installations you have.

To help you get a better idea of house rewiring costs, the below table sets out the price of rewiring different-sized properties.

Type of Property Rewiring Cost
One-bedroom bungalow £1900 - £3000
Two-bedroom terraced house £2500 - £3500
Three-bedroom semi-detached house £3000 - £4500
Four-bedroom detached house £3800 - £5700
Five-bedroom detached house £4400 - £6000

This job should be completed by a qualified electrician.

The cost of labour is usually included in the overall house rewiring cost; however, some may charge an hourly rate of around £25 to £50 per hour.

This price, will, of course, depend on the location of your property, as electricians in London tend to charge more than those in the north-west.

They may also charge an additional fee for more remote areas.

Tradespeople may also charge more if the wiring in your property is hard to access, as this will increase the amount of time spent on the job.

What Does Rewiring a House Involve?

House rewiring is a complex job which must be conducted by a qualified electrician who will assess the condition of your existing wiring before replacing it with updated fixtures.

To do this, they may need to move furniture, rip up floorboards and knock through walls, so if you are planning to renovate you should get your house rewired beforehand.

Once the assessment is complete, the installer will proceed with the first stage of the house rewiring process.

This will involve replacing all cabling, wiring and backboxes, which will then be tested to double-check they are working safely and correctly.

The second stage of house rewiring involves re-installing or replacing light fixtures, light socket and switch faceplates.

Again, these will be tested to ensure everything is working as it should.

Once all the stages are complete, the installer will then conduct an Electrical Installation Condition Report along with an Electric Safety Certificate to determine that the rewiring has been successful, and the property is safe.

You may have to pay an additional fee for a report which is usually around £175 to £350.

Other additional costs include moving a light switch or socket which tends to cost around £100 to £300, installing a hardwired smoke alarm for £70 to £90 or even a fuse box replacement which ranges from £200 to £350.

DIY House Rewiring

Rewiring a house can be a dangerous job, so it is definitely not something you should conduct yourself unless you are a qualified electrician.

It is best to hire someone who is listed under the competent persons scheme who has the ability to self-certify electrical work while maintaining planning permission and building regulations compliance. If the person you hire is not listed under this scheme, then the work must be approved by somebody who is in order to comply with the current rules.

Attempting a house rewiring with no formal qualifications could result in creating an electrical fire hazard. It will also put you at risk of electrocuting yourself if you remove or install wiring incorrectly, which could be fatal.

Potential Problems and Pitfalls

There are various things that can go wrong with a house rewiring, including the risk of electrical fire which can occur if a wire is disconnected incorrectly. This is why it is imperative that you hire a competent electrician who has at least five years’ experience with rewiring properties. Any electrical work conducted should follow the safety standards states in the BS 7671 wiring regulations.

Suppose electrical work is conducted and it does not meet building regulations or planning permissions. In that case, you may need to pay for a report to be undertaken by a qualified person, and you may have to pay them to complete compliant rewiring.

Another issue with house rewiring is that it is hugely disruptive and usually involves lifting up floorboards and moving furnishings. This is why it is advised to have this job completed before conducting any renovations.

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Sam J

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