Erection of an additional floor at roof level in connection with the buildings use as part residential and part office accommodation, and formation of a roof terrace at fourth floor level.

Demolition of existing rooftop plant rooms and existing roof, and erection of a single storey roof extension to provide additional office accommodation (Class E) with ancillary roof terrace and replacement plant room; installation of new entrance from Avonmore Road at ground floor level; ancillary alterations to the existing office building (including replacing louvres with new matching windows); and provision of disabled persons parking, ev points and cycle facilities.