What self-certification means
For work within an authorised scheme's scope, the installer can use that route rather than making a separate building control application for that installation. The installer must comply with the relevant requirements and arrange the notification and certificate. The rest of a larger extension or refurbishment still needs its own appropriate building control route. [1]
Ask for the scheme name and membership details before appointment. Check the registered business and the type of work, not just a scheme logo on a quotation. The government's current list distinguishes the activities different schemes can certify. [2]
Electrical work and replacement windows
Some electrical work is notifiable under Part P; some alterations are not. An appropriately registered installer can self-certify work within its scope, while other lawful notification arrangements may be available. The electrical installation certificate and building regulations compliance notification serve different purposes, so establish which documents will be provided. [4] [5]
Replacement windows and doors can also fall within authorised schemes. That does not make a window installer responsible for structural alterations or every other element of the project. The specification still needs to address applicable ventilation and energy requirements. [2] [6] [7]
Gas, heat pumps and solar
HSE explains that relevant gas work must be undertaken by a Gas Safe registered business with competence for that work. The government scheme list expressly notes that Gas Safe is not technically a competent person scheme, although its installers have related building regulations responsibilities. [3] [2]
Heat pumps and solar installations can engage several requirements, including electrical safety, structure and ventilation or services design. Check the authorised installation scope and how each part will be certified. One trade accreditation should not be treated as evidence that every separate approval has been obtained. [2] [4] [8]
Collect the paperwork
Agree at quotation stage who will notify the work and provide certificates. Retain the compliance certificate together with the installation and commissioning information. Where the installation is part of a larger project, send the relevant evidence to the principal contractor and building control body. [1] [9]
Current changes to check
The government's scheme list was updated on 17 September 2026, so use the current register rather than an old printed list. Separately, the IET's transition between wiring-standard amendments ends on 15 October 2026. This changes the standard applicable to new electrical design; it is not a blanket instruction to rewire existing homes. [2] [10]
The relevant 2026 Part L and Part F provisions commence for non-higher-risk work on 24 March 2027, subject to transitional arrangements. The applicable edition depends on the work being certified; the new-home standard is not a blanket requirement to retrofit existing homes. [11]