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Periodic Inspections / Electrical Condition Reports

Licensing authorities, public bodies, insurance lenders and others including estate agents may require periodic inspection and testing of installations. Some reasons for these inspections and tests are:

  • To assess compliance with current wiring regulation BS7671 17th edition
  • To assess that the installation is not damaged or deteriorated so as to impair safety
  • On a change of occupancy (tenancy) of the premises
  • On a change of use of the premises
  • After alterations or additions to the original installation
  • Because of any significant change in electrical loading of the installation
  • Where there is reason to believe there is damage to the installation
  • To provide an important record of the installation at the time of the inspection, and make a recommendation for when the property needs re-testing in the future


Related article:
Electrical safety for landlords

Electrical Installation Certificates

The electrical installation certificate is used only for the initial certification of a new installation. The certificate provides a formal assurance that the installation complies with the requirements of the national standard for electrical safety and should be issued before the new installation is put into service. Some basic examples where this certificate would be used are:

  • Following a re-wire
  • Following an upgrade of the mains unit
  • Following the installation of a new circuit (i.e. smoke alarms)


This certificate recommends when the installation is to be tested again and a full periodic inspection and test should then be performed at this date. When the domestic electrical installation certificate expires it should be passed on to the electrical contractor doing the periodic inspection as a point of reference. This will not only save time for the inspector but money for the client ordering the work.

Minor Electrical Installation Works Certificate

Minor works certificates are only issued when there is an alteration or an addition to an existing circuit and does not include the wiring of a new circuit. A few examples that fall within its scope are:

  • Adding a socket to an existing socket circuit
  • Carrying work out on an existing lighting circuit, including altering any existing switching arrangements and /or an additional lighting point.

To discuss an electrical project you want doing to a high standard and a sensible price, contact Norcroft today for a free no-obligation quote.