83 - 87 Castle Street is primarily used for retail use, with a number of units cleared. The current stores located on 83 - 87 Castle Street include Your Local, Kids Store and Castle Street Discount Store.

In February 2009, Fenton Partnership submitted a planning application (Z/2009/0216/F) proposing the demolition of existing buildings and construction of a 4 storey commercial building with rear access for fire escape, 1 no. retail unit on the ground floor and 3 no. office units above. This application was withdrawn in January 2010.

In May 2010, Fenton Partnerships submitted a revised planning application (Z/2010/0691/F) proposing the demolition of existing buildings and construction of 6 storey retail and office use building with rear access for fire escape, deliveries and disabled parking. This application was approved in November 2015.

In January 2021, Communities Minister Deirdre Hargey announced that CSI1818 Limited had been appointed to redevelop a derelict site at Castle Street in Belfast City centre. The derelict site at Castle Street and Marquis Street in Belfast was acquired by the Department for Communities in 2018 for the purposes of redevelopment. 

The Department for Communities ran a competition for developers to put forward their proposals for the site, which resulted in CSI1818 Limited being selected. CSI1818 Limited has also acquired adjacent sites for development alongside the Department’s site and their combined redevelopment programme will lead to construction of retail space and residential accommodation. The combined site currently consists of derelict sites & small retail businesses.