Building Control guidance - exempt buildings
The table below describes some of the most frequent types of exempt buildings.
Some works may however require planning permission.
|Type of building or building work||Additional conditions which must be met|
|Detached buildings not normally used by people e.g. buildings containing fixed plant or machinery intermittently used by people only to maintain or inspect that plant or machinery.||Subject to minimum distances from other buildings, or their boundaries, where people normally go.|
|Buildings used for agricultural purposes.||Must not be used for retailing, packing or exhibiting. No part of building to be used as a dwelling. Subject to distance restrictions from any building containing sleeping accommodation, and provision of fire exit in some circumstances.|
|Ancillary buildings such as:
1. a site sales office
2. construction site office used during construction work
|Must not contain sleeping accommodation.|
|Greenhouses*||Must not be used for retailing, packing or exhibiting.|
|Temporary buildings, which will not remain on site.||No part of building to be used as a dwelling. Subject to distance restrictions from any building containing sleeping accommodation and provision of fire exit in some circumstances.|
|Small detached buildings comprising either: **|
|1. a single storey building of not more than 30m² floor area; or||Must not contain sleeping accommodation; and must either be at least 1m from the boundary of the site or be constructed substantially of non-combustible material|
|2. a building which does not have a floor area larger than 15m²||Must not contain sleeping accommodation|
|- Extensions to buildings at ground level comprising**
- Thermally separated conservatory or porch, covered yard or covered way; or
Carport open on at least two sides
|The extensions must be at ground level only and no larger than 30m² in floor area. Conservatories or porches, which are wholly or partly glazed, must meet the requirements regarding their glazing (i.e. Part 'N' of Schedule 1 of the Building Regulations)|
Compliance with Part P Electrical Installations and Part G Water Supply & Systems, and Part L Conservation of Fuel and Power
* The building needs to comply were fixed electrical equipment, or a hot or cold water supply is provided shared with or located inside a dwelling.
** The building needs to comply where fixed electrical equipment is provided supplied from a dwelling, or where the building receives hot or cold water from a source shared with any building that is not an exempt building.
The building also needs to comply if the heating system of the dwelling is extended into the conservatory.
- The full list of buildings and exemptions is contained in Regulation 9 and Schedule 2 to the Building Regulations 2010.
The table is only a guide to some of the more general types of buildings/building work, which may be exempt from control under the Building Regulations. It does not contain all the detail or conditions, which may need to be met.