Upwards extensions: prior approval

Upwards extensions prior approval
Prior approval type	Consultation requirements	Considerations	Who makes the decision?
Class A - New dwellinghouses on detached block of flats Up to 2 additional storeys of new dwellings above a detached block of flats	neighbour notification letters – directly adjoining properties and addresses within the existing building only relevant consultees as per site constraints site notice	whether the size of the extension is within permitted limits (select prior approval type for more details) transport and highways impacts air traffic and defence asset impacts contamination risks flooding risks external appearance of the building provision of adequate natural light amenity of existing and neighbouring buildings impact on protected views fire safety	Officer delegated. Committee meetings do not take place for prior approvals.
Class AA - New dwellinghouses on detached building in commercial or mixed use Up to 2 additional storeys of new dwellings above a detached building used as a shop, financial/ professional service, restaurant/café or offices or, a mix of the above uses or, a mix of the above uses and dwellings	neighbour notification letters – directly adjoining properties and addresses within the existing building only relevant consultees as per site constraints site notice	whether the size of the extension is within permitted limits (select prior approval type for more details) transport and highways impacts air traffic and defence asset impacts contamination risks flooding risks external appearance provision of adequate natural light amenity of existing and neighbouring buildings noise impacts impact of residential use on trade/business or other use impact on protected views fire safety	Officer delegated. Committee meetings do not take place for prior approvals.
Class AB - New dwellinghouses on terrace buildings in commercial or mixed use Up to 2 additional storeys of new dwellings above a 2+ storey terrace building or up to 1 additional storey of new dwellings above an existing single-storey terrace building used as a shop, financial/ professional service, restaurant/café or offices or, a mix of the above uses or, a mix of the above uses and dwellings	neighbour notification letters – directly adjoining properties and addresses within the existing building only relevant consultees as per site constraints site notice	whether the size of the extension is within permitted limits (select prior approval type for more details) transport and highways impacts air traffic and defence asset impacts contamination risks flooding risks external appearance provision of adequate natural light amenity of existing and neighbouring buildings noise impacts impact of residential use on trade/business or other use impact on protected views	Officer delegated. Committee meetings do not take place for prior approvals.
Class AC - New dwellinghouses on terrace buildings in use as dwellinghouses Up to 2 additional storeys of new dwellings above a 2+ storey terrace building used as a single dwelling or up to 1 additional storey of new dwellings above an existing single-storey terrace building used as a single dwelling	neighbour notification letters – directly adjoining properties and addresses within the existing building only relevant consultees as per site constraints site notice	whether the size of the extension is within permitted limits (select prior approval type for more details) transport and highways impacts air traffic and defence asset impacts contamination risks flooding risks external appearance of the building provision of adequate natural light amenity of existing and neighbouring buildings impact on protected views	Officer delegated. Committee meetings do not take place for prior approvals.
Class AD - New dwellinghouses on detached buildings in use as dwellinghouses Up to 2 additional storeys of new dwellings above a 2+ storey detached building used as a single dwelling or up to 1 additional storey of new dwellings above an existing single-storey detached building used as a single dwelling	neighbour notification letters – directly adjoining properties and addresses within the existing building only relevant consultees as per site constraints site notice	whether the size of the extension is within permitted limits (select prior approval type for more details) transport and highways impacts air traffic and defence asset impacts contamination risks flooding risks external appearance of the building provision of adequate natural light amenity of existing and neighbouring buildings impact on protected views	Officer delegated. Committee meetings do not take place for prior approvals.

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