Horrendously complicated questions that Sarah has posed. The permitted development legislation changed as of 1st October 2008 and the current 'rules' as to what someone can build in their gardens without needing to get planning permission from the local authority is as follows (cut & pasted from the relevant regulations) :Class EPermitted developmentE. The provision within the curtilage of the dwellinghouse of—(a) any building or enclosure, swimming or other pool required for a purpose incidental to the enjoyment of the dwellinghouse as such, or the maintenance, improvement or other alteration of such a building or enclosure; or(b) a container used for domestic heating purposes for the storage of oil or liquid petroleum gas.Development not permittedE.1 Development is not permitted by Class E if—(a) the total area of ground covered by buildings, enclosures and containers within the curtilage (other than the original dwellinghouse) would exceed 50% of the totalarea of the curtilage (excluding the ground area of the original dwellinghouse);(b) any part of the building, enclosure, pool or container would be situated on land forward of a wall forming the principal elevation of the original dwellinghouse;(c) the building would have more than one storey;(d) the height of the building, enclosure or container would exceed—(i) 4 metres in the case of a building with a dual-pitched roof,(ii) 2.5 metres in the case of a building, enclosure or container within 2 metres of the boundary of the curtilage of the dwellinghouse, or(iii) 3 metres in any other case;(e) the height of the eaves of the building would exceed 2.5 metres;(f) the building, enclosure, pool or container would be situated within the curtilage of a listed building;(g) it would include the construction or provision of a veranda, balcony or raised platform;(h) it relates to a dwelling or a microwave antenna; or(i) the capacity of the container would exceed 3,500 litres.E.2 In the case of any land within the curtilage of the dwellinghouse which is within—(a) a World Heritage Site,(b) a National Park,(c) an area of outstanding natural beauty, or(d) the Broads,development is not permitted by Class E if the total area of ground covered by buildings, enclosures, pools and containers situated more than 20 metres from any wall of the dwellinghouse would exceed 10 square metres.E.3 In the case of any land within the curtilage of the dwellinghouse which is article 1(5) land, development is not permitted by Class E if any part of the building, enclosure, pool or container would be situated on land between a wall forming a side elevation of the dwellinghouse and the boundary of the curtilage of the dwellinghouse.Interpretation of Class EE.4 For the purposes of Class E, “purpose incidental to the enjoyment of the dwellinghouse as such” includes the keeping of poultry, bees, pet animals, birds or other livestock for the domestic needs or personal enjoyment of the occupants of the dwellinghouse.Article 1(5) land is a Conservation Area. In terms of the use of such a building, there is a plethora of contradictory case law. Some Planning Inspectors have taken the draconian line (in my view) and said that such buildings can't have their own shower or toilet facilities, even if the building is clearly used as a gym for the personal enjoyment of the homeowner or tenant. In other cases I've come across Inspectors have failed to support enforcement notices issued by Councils against the alleged residential use of such outbuildings (including a kitchen etc) unless the Council has firm evidence to show the building is lived in permanently as someone's home.But I'll try to answer as best I can :)
Adam Beamish ● 6137d