Building 4 comprises three separate six storey blocks containing 175 residential apartments with a mix of studios, 1, 2 and 3-bed units and provides commercial spaces at ground floor and inlet level. The building interfaces the already completed buildings 9 (The Crescent) and 3b (Quay Point), with which it shares a basement and access. 

A mews has been created between buildings 3b and 4 and a major landscaped set piece of Millennium Promenade is framed with building 9. Building 4’s main entrances to the three blocks and the ground floor apartments have direct and level access from the Promenade public realm to give a positive animation to the street scene.

The Millennium Promenade is an accessible green amenity to be enjoyed by Harbourside residents as well as the public, leading down to Harbour Square. The Square is designed to accommodate a diverse range of activities including art performances, markets, food, the Harbourside Festival and alfresco dining. 

Designed in collaboration with urban artists Sans Facon, Millennium Promenade ties together elements of architecture, art and landscape. A series of collection dishes, channels and rills celebrate the passage of rainwater from the roofs of the buildings to the harbour inlet. The water is used within a Sustainable Urban Drainage System and irrigates the landscape.