A full house rewire replaces all of the fixed wiring in a property, from the consumer unit outward through to every socket, switch and light fitting. It is one of the most extensive pieces of electrical work a domestic property can undergo, but it is sometimes the most appropriate solution when an installation has deteriorated beyond the point where targeted repairs are practical or cost-effective.
A complete rewire is typically recommended when an electrical installation condition check identifies widespread Code 1 or Code 2 observations across multiple circuits that cannot realistically be addressed through localised repairs, or when the existing wiring is of a type that has reached or exceeded its safe service life. Older cable types, missing protective conductors or deteriorated insulation may need attention.
Age or cable type alone does not establish that a complete rewire is necessary: the electrician assesses the condition, test results and practical repair options. During a full rewire, engineers work through each room systematically.
New cables are routed through the loft, underfloor void or by chasing into walls and ceilings, and accessories are positioned to meet the customer's requirements. The approach to reinstatement of decorative surfaces varies: surface-mounted conduit avoids replastering, while chased-in cables provide a neater finish but require making good afterwards.
The customer and engineer should agree the scope of making good before work begins to avoid uncertainty on completion. A full rewire is notifiable work under Building Regulations Part P.
An engineer registered with a competent person scheme self-certifies the work and notifies the local authority on the customer's behalf, avoiding the need for a separate building control application. On completion, the customer receives an Electrical Installation Certificate and a Building Regulations completion document.
Where a competent person scheme is not used, the appropriate building-control approval and certification route must be arranged before work starts. Both documents should be kept safely, as they are commonly requested when selling the property or by an insurer.
To prepare for a rewire, empty cupboards and shelving near skirting boards and move furniture away from walls where possible. Ensure the engineer has clear access to the loft, underfloor spaces and the consumer unit.
The duration of the work depends on the size and layout of the property; the engineer can advise on the expected programme at the initial assessment stage.