How do you rewire a house ?

 Lots of experience is required

If you are thinking about having a rewire then this article will give you an insight as to how we would approach the work.

In the first instance we will have provided you with a detailed written quotation and spent time discussing your requirements for the property, after all this is a major part of your properties infrastructure and consideration needs to be given to items like whether you require an Electric shower for instance or what type of energy source for cooking you intend to have? Etc.

When rewiring a house a good idea first of all is to assess the importance of locations for sockets lights and all accessories.  This is a major job and probably will be the last time you have the property rewired in your lifetime so it is a wise move to have a good think to correctly position outlets for current and possible future expansion. Will you be having any future extensions conservatories garden buildings even maybe treating yourself and having a hot tub?

After the planning stage is over we will give you a detailed list room by room of what you have requested and we will generally walk through the property and pinpoint exactly where the location of each item is to be positioned. It is always a good idea for you to mark the walls at this stage and pinpoint the approximate location for your new outlets to be installed.


Because a rewire is classed as major works then the building regulations regarding the installation have to be implemented. These items include fire safety, accessibility, ventilation and energy efficiency these items all need to be adapted to suit the property.

Some items have to be located as to comply with building regulations Part M (Access to and use of buildings 2004). These regulations govern the maximum and minimum mounting heights for electrical outlets.

The height restrictions are not just meant for the infirm disabled or elderly people in fact a major factor in these regulations were for small children falling off chairs etc trying to turn on light switches .

Part M covers most areas of the house where people other than the householder could be expected to use.   Most sockets in lounges bedrooms hallways etc now have to be mounted at 450mm  minimum from the floor and all the light switches are to be mounted no more than 1200mm from finished floor level.

Fire safety has a part to play in a rewire as the property must have a mains interlinked fire detection system installed , usually comprising of smoke and heat detectors dependant on location of the device and some instances, carbon monoxide detectors.

Areas of high humidity also need to be assessed for ventilation fans or extract systems possibly heat recovery or humidity controlled fans.


When all the planning and marking out is finished now we can get on with the task in hand.

First stages of the rewire

If the property is lived in the main concern is that at night the electricity                         supply to the circuits of the house are still useable and safe. 

We would generally                                                                                                                   in this instance try to keep the circuits being installed away from the original circuits until the last minute when the old circuits and wiring can be safely removed.




A lived in rewire can be a tricky job because the property has to be safe at the end of the day, disruption has to be kept to a minimal and carpets need to be put back down tidied up and clean. We always endeavour to keep this standard and where possible keep disruption to a minimum.

The vacant property is a different scenario as the property may be in a position to be left without power for a period of time without any detrimental effect to the installation.

Flush or Surface Installation

There are many ways to wire a house it can be a surface installation where the cables are concealed within plastic conduit or trunking fixed to the walls and ceilings. Or the more permanent chopped in method where all the cables are to be flushed into the walls by means of chopping out the plaster and      re-plastering afterwards. Skills learned over years can prove the difference between a good tidy job and a rewire where walls were unnecessarily chopped out and mess created.

Sometimes we would be asked to carry out a mixture of the two, for example a room is not going to be decorated and the installation is carried out surface with a view to chop the cables in next time the room is decorated.

Consideration needs to be made regarding the method of installation as the method chosen will have an effect on how much re-decorating is required afterwards.                                                                                                                                             

At JSD Electrical Services Ltd our years of experience will provide you with a neat and tidy job that has been thought through and meticulously planned.

Stage Two

When the cables are installed into the walls (1st fixed) then it is time for the sockets and switches etc to be plastered around or to completely plaster the installed wires to put the walls back to a satisfactory level of finish.

Stage Three

Complete the installation work by making off the accessories and consumer unit (2nd fix)

Stage Four

Finally, stage four testing.

All circuits that have been installed will now be tested to make sure that they comply with the IEE wiring regulations and all current regulations that also apply.


Keeping your records straight.

When we have installed the circuits and the satisfactory test results are recorded we will then proceed to issue the relevant warranties and certificates that you will be required to keep as a record of the works that have been carried out.

We are in a time now where information regarding your property is required if you were to sell. So it is imperative that you keep all the test certificates and records of the property in a safe location as these will be required in future. It is also important to keep this information as it will help in future to assess the levels of deterioration if any to your electrical system and help to identify circuits and their purpose.

All circuits installed will be identified on the consumer unit (fuse board) individually and also we will provide a circuit chart that will be attached to or near the consumer unit.

We will issue a NICEIC Electrical Installation certificate to comply with the current wiring regulations

BS7671 2008

A Certificate to BS5839 Fire detection and alarm systems for buildings will also be issued for the smoke and heat detection installed. A certificate to comply with Approved Document P. Electrical safety (Part P building regulations 2005) will be issued directly to you by the local authority's building controls dept.

A Building Controls Insurance Warranty will be issued (Mandatory) 

A NICEIC Insurance Backed Warranty will also be issued (Mandatory)

 *The NICEIC Insurance Backed Warranty covers work undertaken by contractors registered to the NICEIC Domestic Installer Scheme that is notifiable to Building Control.  The purpose of the Warranty is to protect consumers should any work be found not to comply with the Building Regulations under circumstances where the contractor is no longer in business to undertake the necessary remedial work.

The financial limit placed on the remedial work is £25,000 in respect of any one installation per period of insurance and the warranty is valid for a period of six years from the date of completion of the original work.

All work and materials are guaranteed for 12 months from date of invoice.


Thinking about rewiring your own house?

Basically in a short sentence forget it.

Why?..You might ask.

Well from the Jan 1st 2005 Part P of the building regulations Electrical Safety was introduced

 What is Part P of the Building Regulations?

In 2005 the Government introduced electrical safety rules into the Building Regulations for England and Wales. Because of this, most fixed electrical installation work carried out in homes must, by law, meet the Building Regulations.

Part P states that anyone carrying out electrical installation work in a home must make sure that the work is designed and installed to protect people from fire and electric shocks. Part P applies to newly-built homes and to any changes made to existing installations, including any parts that have been rewired.

What electrical work is covered by this law?

All electrical installation work in a home, garden, conservatory or outbuilding must meet the Building Regulations. Apart from some types of minor work, all electrical work must either be reported to the local-authority building-control, or be carried out by an electrician who is registered with one of the Government-approved scheme providers.