When do I need a rewire? There are no set guidelines as to when a property should be rewired. Just because your wiring’s old, it doesn’t mean it’s unsafe. Many factors can affect the wear and tear of your electrical installation, including the materials used and how your property has been used. We would advise that a periodic inspection is carried out on owner-occupied properties at least every 10 years and every five years in rented accommodation. The test will certify wheth