The following work does not require approval:
Buildings not frequented by people
A detached building –
a) into which people do not normally go; or
b) into which people go only intermittently and then only to inspect or maintain fixed plant or machinery,
unless any point of such a building is less than one and a half times its height from
i) any point of such a building into which people can or do normally go; or
ii) the nearest point of the boundary of the curtilage of that building.
Whichever is the nearer.
Greenhouses and agricultural buildings
1. Subject to paragraph 3, a greenhouse.
2. A building used, subject to paragraph 3 for agriculture, or a building principally for the keeping of animals, provided in each case that –
a) no part of the building is used as a dwelling;
b) no point of the building is less than one and a half times its height from any point of a building which contains sleeping accommodation; and
c) the building is provided with a fire exit which is not more than 30 meters from any point in the building.
3. the descriptions of buildings in paragraphs 1 and 2 do not include a greenhouse or a building used for agriculture if the principal purpose for which they are used is retailing, packing or exhibiting.
4. In paragraph 2 “agriculture” includes horticulture, fruit growing, the growing of plants for seed and fish farming.
Temporary buildings
A building which is not intended to remain where it is erected for more than 28 days.
Ancillary buildings
1. A building on a site, being a building which is intended to be used only in connection with the disposal of buildings or building plots on that site.
2. A building on the site of construction or civil engineering works, which is intended to be used only during the course of those works and contains no sleeping accommodation.
3. A building, other than a building containing a dwelling or used as an office or showroom, erected for use on the site of a mine or quarry.
Small detached buildings
1. A detached single storey building, having a floor area which does not exceed 30m2, which contains no sleeping accommodation and is a building –
a) no point of which is less than one metre from the boundary of its cartilage; or
b) which is constructed substantially of non-combustible material.
2. A detached building designed and intended to shelter people from the effects of nuclear chemical or conventional weapons, and not used for any other purpose, if –
a) its floor area does not exceed 30m2; and
b) the excavation for the building is no closer to any exposed part of another building or structure than a distance equal to the depth of the excavation plus one metre.
3. A detached building, having a floor area which does not exceed 15m2, which contains no sleeping accommodation.
Extensions
The extension of a building by the addition at ground level of –
a) a conservatory, porch, covered yard or coverec way; or
b) a carport open on at least two sides;
where the floor area of that extension does not exceed 30m2, provided that in the case of a conservatory or porch which is wholly or partly glazed, the glazing satifies the requirements of Part N of Schedule 1.