NICEIC Domestic Installer

 Domestic Installer Scheme (Part P)

The Domestic Installer Scheme is NICEIC's approval for contractors undertaking work within the scope of Part P of the Building Regulations.

What is the Domestic Installer Scheme?

NICEIC's Domestic Installer Scheme has been approved to register installers to Full Scope or Defined Competence for domestic electrical installation work in accordance with Part P Building Regulations. The scheme covers design, installation and inspection and testing and certification of electrical installation work associated with dwellings, intended to operate at low or extra low voltage.

The scopes of registration are;

Full Scope

  • The scope of work covers the full range of domestic electrical installation work. This is those businesses that carry out electrical installation work as the main part of their business. However, other businesses wishing to be registered as full scope, must provide level A type work for assessment (see definition matrix below).

If the main activity of the business is not electrical installation work and involves only additions to existing circuits, then the Defined Competence route will be more appropriate.

Defined Competence

  • The scope of work is limited to Level B type electrical installation work in connection with , or ancillary to, some other non-electrical work (see definition matrix below).
  • Examples of work/installations that fall within the scope of Defined Competence:


Kitchen, bathroom and bedroom
Security systems
Gas heating
Loft Conversions
Oil-Fired heating
Door/gate entry



Solid fuel heating
Extractor fans
Garden installations
Air conditioning
Swimming pools
Stair lifts
Spa baths