Part 34 SHOPS, FINANCIAL AND PROFESSIONAL SERVICES ESTABLISHMENTS

the floor space of the original building would be exceeded by more than—

whichever is the lesser;

the height of the building as extended would exceed 5 metres;

any part of the development, other than an alteration, would be within 2 metres of any boundary of the curtilage of the premises;

the development would consist of or include the construction or provision of a veranda, balcony or raised platform;

the development would lead to a reduction in the space available for the parking or turning of vehicles;

the development would be within the curtilage of a listed building unless listed building consent has previously been granted;

any extension or alteration would be in a conservation area, a World Heritage Site, an area of special scientific interest or a site of archaeological interest;

any part of the development would extend beyond an existing shop front; or

the development would involve the insertion or creation of a new shop front or the alteration or replacement of an existing shop front.

any alteration shall be at ground floor level only;

any extension shall be constructed using materials which have a similar external appearance to those used for the building being extended; and

any extension or alteration shall only be used as part of, or for a purpose incidental to the use of the shop or financial or professional services establishment.

where two or more original buildings are within the same curtilage and are used for the same undertaking they are to be treated as a single original building in making any measurement;

“raised platform” means a platform with a height greater than 0.3 metres above ground level;

“shop or financial or professional services establishment” means a building, or part of a building, used for any purposes within Classes A1 or A2 of the Schedule to the Use Classes Order and includes buildings with other uses in other parts as long as the other uses are not within the parts being altered or extended.

the floor space of the building or enclosure erected would exceed 20 square metres;

any part of the development would be within 20 metres of any curtilage of any dwellinghouse or flat;

the height of the building or enclosure would exceed 2.5 metres;

the development would be within the curtilage of a listed building unless listed building consent has previously been granted;

the development would be in a conservation area, a World Heritage Site, an area of special scientific interest or a site of archaeological interest; or

the development would be between a shop front and a road where the distance between the shop front and the boundary of the curtilage of the premises is less than 5 metres.

the provision of a hard surface within the curtilage of a shop, financial or professional services establishment; or

the replacement in whole or in part of such a surface.

the cumulative area of ground covered by a hard surface within the curtilage of the premises (other than hard surfaces already existing on 19th September 2012) would exceed 50 square metres; or

the development would be within the curtilage of a listed building unless listed building consent has previously been granted.

where there is a risk of groundwater contamination the hard surface shall not be made of porous materials;

in all other cases, either—