Belfast·SPG006 Tall Buildings·Page 12·4.1.7
Base section alignment with neighbouring buildings
The base height of tall buildings should respect any uniform heights established by neighbouring buildings, including consistent shoulder heights, eaves heights, ridge heights, or prominent building details like cornices.
Where tall buildings are proposed within an existing street, the height of the base should take cognisance of any uniform heights established by neighbouring buildings, be these consistent shoulder heights, eaves heights, ridge heights or prominent building details such as major and minor cornice features.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/belfast/SPG006 Tall Buildings.pdf