Should electrical installations be replaced if they are old?

If the installation has not been damaged by a flood or fire, under the Wiring Regulations it will not need to be replaced if:

  • It was installed according to a previous version of the Regulations
  • It is still safe for continued use
  • It is not due to be upgraded


Since its introduction in January 2005, electrical installation work carried out in all domestic properties and some commercial properties in England and Wales has been subject to Part P of the Building Regulations.
Part P applies to ALL electrical work and failure to meet its requirements is a criminal offence.
As a consequence of Part P, all electrical installation  work in England and Wales now counts as “building work”, as defined in the Building Regulations 2000.

This means that all electrical installation work in domestic properties and some commercial properties must be either*:

  • Notified to a Building Control Body before the  work commences



  • Undertaken by a competent person registered with  a Government-approved competent person scheme  provider, such as Elecsa (www.elecsa.co.uk)

(*Unless the work is ‘minor’ in nature and does not come under the scope of ‘notifiable work’ under Part P. Details of the scope of work to be notified under Part P can be found in the ECA leaflet “Part P of the Building Regulations (2006 edition) - Explained” at www.eca.co.uk.)

After a flood or fire, a competent electrical contractor should be appointed to ensure the safety of the affected electrical installations, to undertake a Periodic Inspection and report and where relevant, to satisfy Part P requirements.

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