In 2011 Collins and Turner were invited by Mirvac to participate in the design excellence competition for the $215m redevelopment of 200 George Street in Sydney’s CBD.

The brief called for a detailed proposal for a new 35 story tower, the redevelopment of 8 story building to Daley Street, and a strategy to integrate the ground level of the building with the future pedestrianised George Street, as well as the revitalisation of the network of CBD laneways that connect to the site with a through-site link.

Developed in collaboration with MBMO Architects , Plus Minus Design, Shiro architects and Arup engineers, the tower design proposes a compact and efficient floor plate that maximises harbour and CBD views through a southern location of the building core.

The tower plan is articulated as a series of fingers of flexible open plan office accommodation, interlinked three-dimensionally with multi-floor spaces which are articulated as sky gardens – semi-landscaped spaces that provide amenity and potential uses such as break-out spaces, meeting rooms, or cafes for individual tenancies.

The low energy strategy builds on experience gained by Collins and Turner on pioneering green high rise buildings in Europe, and envisages a mixed-mode air conditioning system enabling natural ventilation to perimeter offices when climatic conditions are favourable, utilising a double skin wall on north and west-facing facades.

The proposed public areas link George Street with the city laneways via an 8 story entry void – a dramatic light-filled space that includes fine grain retail, public art and landscape as well as entry to the tower lobby via a suspended glazed bridge link.

Collaborating Architect

MBMO, Phillip Arnold (Plus Minus Design), Hiromi Lauren

Structure

Arup

QS

Waterman

ESD

Arup

Planning

Urbis

Lifts

Arup