Belfast·SPG009 Retail and Main Town Centre Uses·Page 20·3.3.3
Base Year for Impact Testing
The base year for impact assessment should generally be the year when the planning application is submitted.
The base year for impact testing should generally be selected to represent the year when the proposal application has been submitted.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/belfast/SPG009 Retail and Main Town Centre Uses.pdf