This section applies where—
This section also applies where—
A person with an interest in the land, or a person acting on behalf of such a person, may make an application to a local planning authority in whose area the land is situated for the condition or approved document to be modified in either or both of the ways specified in subsection (4).
Those ways are—
The application must—
The application must specify—
The date specified under subsection (6)(c) must not be earlier than the end of the period of 14 days beginning with the day after that on which the application is sent to the local planning authority.
The date specified under subsection (6)(d) must not be later than 1 April 2021.
In this section "relevant development of a dwellinghouse" means development—
For the purposes of subsection (9)—
"dwellinghouse" does not include a building containing one or more flats or a flat contained within such a building;
"flat" means a separate and self-contained set of premises constructed or adapted for use for the purpose of a dwelling and forming part of a building from some other part of which it is divided horizontally.