Adding storeys to existing tall buildings

How much new floorspace that can be added to an existing building will often be predicated by the floor loadings imposed on its original design, which if constructed during the 1960s to 1980s tended to be over specified. Adding one or two additional storeys to an existing structure, as enabling works to maximise its capacity and bring the building back into use, is generally widely accepted so long as there is no discernible adverse impact arising from the new build. These can include any impacts on the setting of listed buildings, conservation areas, ATC's, amenity, overshadowing and poor design quality. To ensure that the original integrity of the building is not compromised and that the final reimagined building is contextually appropriate, careful consideration will need to be given to those schemes which claim to require a number of additional storeys to warrant the reuse of the building viable.