Many basement extensions can be constructed under Permitted Development rights, but others need full planning permission.
Basements often appear to be permitted under Part 1 Class A.1 of the General Permitted Development Order (GPDO), however Councils are often keen to exercise development control where they can (see the Royal Borough of Kensington & Chelsea’s 47 page Subterranean Development SPD).
Planning applications can quickly become very complex, requiring detailed engineering drawings and construction method statements. At Plainview Planning we can help guide you through the process, and also ensure that Local Authorities do not over step their statutory responsibilities.
If you need help objecting to a planning application or a certificate of lawfulness then please give one of consultants a call.