Notification and safety are separate questions
Some additions or alterations to existing circuits outside special locations are not notifiable. That does not make them exempt from the electrical safety requirement or remove the need for suitable design, installation, inspection and testing. Ask the electrician to explain the proposed scope rather than assuming every socket alteration follows the same route. [2]
Special-location rules depend on the defined location, including specified zones associated with baths and showers. Do not treat the name of the room alone as a complete account of what is notifiable. [2]
Choose a lawful certification route
A suitably registered competent person can self-certify work within the authorised scope and notify it through the scheme. Other work can follow the appropriate building control route, and Approved Document P describes eligible third-party certification arrangements that must be set up before work starts. [3] [2]
Ask for the registered business details, the scope covered and the certificates to be supplied. An installer offering a test report should clarify whether that includes the separate building regulations notification where required. [4]
Keep the different documents straight
An electrical installation certificate records the electrical design, installation and testing covered by it. A building regulations compliance certificate concerns the notification route. Neither should be confused with the overall building control completion certificate for an extension or conversion. [4] [5]
For a larger project, agree who will pass the electrical evidence to the principal contractor and building control body. The final documentation needs to match the work actually installed, including any changes made during construction. [6] [7]
The October 2026 wiring-standard transition
The IET has published BS 7671:2018 Amendment 4:2026. Its guidance permits the earlier Amendment 2:2022 together with Amendment 3:2024 during the transition ending on 15 October 2026. Confirm which edition the designer is using for current work and what the project programme requires. [8]
This is a transition between editions of the wiring standard. It is not a statement that every existing installation becomes unsafe or must be rewired on that date. Assessment of existing wiring and the certification of new work are different questions. [8] [2]
Before floors and walls are closed
Coordinate the cable routes and any penetrations with structural and fire-protection details, and arrange the inspections needed for the chosen compliance route. Do not leave the paperwork or testing strategy until wiring is concealed and finishes are complete. [9] [10] [11]
Use a competent electrical professional for design and installation decisions rather than treating this overview as wiring instructions.