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Rewiring a house in London: Cost to rewire a house.

SW Electricians are London based experts in the rewiring of properties. From a one bedroom apartment to a large Victorian house, we have the expertise to transform the wiring of your home.  

Whether you are changing the electrics of your whole house, or perhaps want to add additional sockets or light switches to make your home more suitable for you and your family, our friendly, professional and reliable electricians can help you to transform the electrics in your home. 

Contact us today for your bespoke rewiring quote.

Alexander Madden portrait

Alexander Madden - CHAIRMAN


Our Expertise

Our electricians are specialists and have undertaken hundreds of rewiring projects on a wide range of homes.

Smart Planning

We will work with you to plan out how to arrange your rewiring to make the most of your home electricals.

Transparent Pricing

We offer fully transparent pricing structures and offer full scoping of work prior to commencement.

Certified Work

All of our rewiring work is fully guaranteed and comes with appropriate certifications.

We're proud to have the following accreditation:


Regulates the training and work of electrical enterprises in the UK

Rewiring a house or flat – What’s involved?

At some point, you have probably heard of re-wiring, but do you know what it actually involves? A full rewire of a home is a fairly major project which will involve installing cables and wiring around your home and joining them to your sockets and fittings.

The great thing about rewiring a house is the fact that you get the chance here to fully map out where you need sockets, switches and light fittings to make your life as easy as possible, and to future-proof your home for modern day living. 

Rewiring a house or flat

You can even think about things such as installing smart home features as part of your rewire, with devices such as automated lighting, speaker systems which are connected to smart devices or smart blinds as part of the rewire. 

It is major work, as these cables will need to be laid under floorboards, within walls and across ceilings, so ideally this should be done when a house is empty – as your electrician will need to be able to access floorboards, and will be ‘chasing’ into walls, meaning that redecorating or plastering may need to be undertaken afterwards, therefore you may be required to consider additional contractors such as plasterers and decorators if you do not wish to undertake this work yourself. 

Rewires take place in two parts – the first part is known as the first fix and is basically the installation of new cables and wires across the property. Part two, known as second fix is where the electricity is made live and the front faces of sockets, switches and lights are fitted. In between the first and second fix, a lot of work takes place that isn't related to electrics such as putting back carpets, filling holes and possibly redecorating.

While SW Electricians do not undertake this work, we are happy to recommend contractors for you.  

At SW Electricians, we are experts in rewiring homes, so will work with you to understand the needs of your household. We will always explain clearly the work which we are undertaking and treat your home with the upmost respect. 


What do I need to do before rewiring can take place?

The rewiring of your home can be quite disruptive, so there are a few things that you need electrical plan to consider in order for your electrician to be able to get started.

The new wiring will need to be fitted in places including ceilings, under floors and in walls, you need to clear all of your rooms of furniture and lift up any carpets or flooring.

You may also need to clear your loft space so that you electrician can easily gain access to the ceilings on the top floor of your property. You will need to provide electrical plan, or you can order electrical plan from SW Electricians. 

When you book a rewire with SW Electricians, we will clearly explain the work that is to be carried out, and what we need you to do before we arrive to undertake the work, so that there are no unnecessary delays to your rewire. 


How long does an electrical rewire take?

This will very much depend on the size of your property, and the complexity of the work involved, and it’s not always about the dimensions of your home. For example, if you require a large number of sockets or light switches this may increase the time which your rewire takes. 
In some cases, running the cabling and wiring may be more complex than usual, particularly in the case of apartments, where access to ceilings may be restricted, so this can add extra time too. 
On average a three bedroom semi-detached house takes around 7-10 working days, however, please get in touch with us for a bespoke quote. 


How much does it cost to rewire a house?

Costs of rewiring a home vary widely depending on several factors. These will include how many rooms you have in your home, the number of sockets required, the number of light fittings needed, plus a host of other considerations, such as the amount of cabling needed to run the electricity around your home. 
At SW Electricians, we offer a great value for money service, and every quote which we offer is bespoke to your home and requirements.

When does a house need rewiring? 

There are several instances where your house may need rewiring. Many older properties in the UK have not had electrical work undertaken for over 25 years or more, as often, due to the disruption that is caused by rewiring, a homeowner leaves this until a property is sold.

If you spot tell-tale signs such as an old fuse box rather than a modern consumer unit, or plug sockets which are attached to skirting boards, it's time to consider a rewire. In most cases, if you are purchasing a property where rewiring is recommended this should show up in your building survey (from an independent surveyor, not your mortgage lender). In these cases, rewiring should be one of your top priorities as the potential dangers include risk of fire or electrocution.

When does a house need rewiring?

Rewiring may also be needed if you are undertaking renovations to your property, for example, if you are having an extension built you will need a power supply to the new rooms of your home or adding an extension or loft conversion, in which case you will require additional wiring to supply the new part of your home.

In some instances, you may be looking to let out a house, and need to comply with safety regulations for tenants
Whatever the reason for your house rewiring, SW Electricians can help. We will work with you to build a plan for the rewiring of your home, always taking into account the little additions that can make all of the differenc. 

Such as garden lighting ,sockets and switches, under cabinet lighting in your kitchen, additional plugs and phone sockets which enable you to be flexible with furniture layouts and smart home installation. 

All of our rewiring is Certified and registered with NICEIC and our electricians are all trained to the highest standards. 

Rewiring flats in London

If you require rewiring of an apartment in London, speak to SW Electricians.

Despite being smaller, the rewiring of an apartment can sometimes be a little more complex than the rewiring of a house, due to issues that can be related to access to ceilings and floors. 

So when you are looking to rewire your apartment, it's worth knowing that you are using an expert electrician who understands the work that may be involved in undertaking the rewiring of a flat.

Rewiring flats in London

Victorian house rewiring in London

Many older houses have cabling and electrics which are out of date, and potentially dangerous. If your home has not had any electrical work undertaken in the past 25 – 30 years, it’s very likely that you should consider rewiring. 

Signs that your home has not been rewired include plug sockets fitted to skirting boards, rubber or fabric cabling or an old fuse box which has a wooden back.

 As London specialists, SW Electricians have a wealth of experience in the rewiring of Victorian homes and understand that you wish to retain the charm of your period property while enjoying the benefits of modern electrical installations. 

Adding new plug sockets to kitchens

In some cases, you may want to re-wire a part of your home, not because it is dangerous or old, but because you require additional plug sockets, or light switches to make modern living easier.A prime example of this is your kitchen. When you are undertaking a kitchen renovation, you may find that extra sockets are required in order to be able to have the appliances that you want.

Adding new plug sockets to kitchens

Modern kitchens go way beyond basic white goods, and you may be thinking of installing a wine fridge, coffee machine or extra appliances such as a dishwasher.

You may also realise that you don’t have enough plug sockets in your kitchen to cope with the number of devices you may use, such as food processors, blenders and even the humble toaster. 

In these instances, you may require a rewire of the kitchen only to be able to get the functionality you need. At SW Electricians, we understand the requirements of a modern kitchen and will work with you initially to understand what may be required.

From new down lighters under kitchen units to sockets with USB functionality, whatever the needs of your new kitchen, we will help you to ensure that you have the right electrics to ensure that your kitchen is fully electrically equipped for modern life.

What other services can you provide?

Some of our most popular service listed below, if you can't find what you need below, please contact us

  • House Rewiring
  • Downlights
  • Smoke and Fire Alarms
  • Fitting New Lights
  • Additional Sockets Installation
  • Partial or full Kitchen wiring
  • Cooker points
  • Switchers and Dimmers
  • Consumer Units / Fuse boxes
  • Garden Lighting
  • Outdoor Lighting / Sockets
  • Domestic rewiring
  • Landlord Electrical Certificates
  • Door Entry Systems
  • Smart home installation
  • Commercial rewiring
  • Electrical inspection
  • Car charging points 
  • Ambient lighting 
  • Sound system installation 

Do you cover South West London? 

Yes, we cover all areas of South West London including  the boroughs of:

  • Kingston upon Thames
  • Lambeth
  • Merton
  • Richmond upon Thames
  • Sutton
  • Croydon
  • Wandsworth


Do you cover West London?

Yes, we cover the following boroughs:

  • Hammersmith
  • Fulham
  • Harrow
  • Hillingdon
  • Brent
  • Hounslow
  • Kensington
  • Chelsea
  • Ealing

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