Electrical installations are part of building regulations whether you are getting a complete rewire, making significant alterations or having additional electrical installations fitted. Faulty electrics can be a serious fire risk and can even cause electrocution in some circumstances . So it's very important to ensure that the whole of your electrical installation is safe and appliances fall within current regulations and even more importantly you are not putting anyone in danger.
If you are planning on moving into a new home which is older than 30 years old it is important that you have a competent electrician check you electrics or check to see when it was last inspected.
Going forward with getting your home rewired can be a very messy job so before you move into your new home please consider getting this done before any decorating or plastering.