Mirvac has firmed up plans for the next stage of Zetland's burgeoning Green Square precinct.

The ambitious $13 billion Green Square redevelopment has been a longstanding collaboration between Mirvac and Landcom, the NSW Government owned property developer, since 2012. Over the last decade they've focused on the 13.7 hectare block of land surrounding the Green Square Train Station, which has seen them already construct hundreds of apartments, extensive food and beverage tenancies, a library, and a primary school.

The latest $315 million plans are a revision on a 2017-approved development application. Proposed are three towers at 960A Bourke Street, two designed by Tzannes Architects and one designed by Bates Smart, both in collaboration with Mirvac's in house design team.

The amalgamated 3,688 sqm block, referred to as Site 7, Site 17 and Site 18, will flank the Green Square central plaza, opposite the Green Square Library and the Green Square Train Station and next door the the award-winning completed residential development Infinity by Crown Group.

The buildings will rise 13, 18 and 20 storeys.

The 13 and 18-storey buildings, designed by Tzannes, were designed to be complimentary in their form, but display individual identities through differing materials, vertical and horizontal articulation, Tzannes noted in their Design Statement submitted to City of Sydney Council.

The Site 7 tower has been designed with a glazed commercial podium with a residential tower floating above, while Site 17 is a brick apartment building, with "reference to Sydney’s long history of small and medium sized brick residential fl at buildings."

There will be 183 dwellings spread across the two buildings, the majority two-bedrooms apartments. There will also be a handful of two and three-bedroom townhouses.

At the foot of the two Tzannes-designed buildings will be 14 retail spaces.

Bates Smart has designed the tower, referred to as Site 18, on the smallest section of the site.

That will have just 77 apartments, again heavily weighted towards two-bedrooms (67%). Bates Smart said the change in the apartment mix was due to the evolution of Green Square since they designed the original tower over six years ago.

"Green Square has undergone radical change in recent years as the public domain and community infrastructure envisioned by the Green Square DCP has come to life," the architecture studio wrote in their Design Statement.

"The completion of key community buildings has made for a highly liveable town centre, including; the Green Square Library and Plaza, Community Centre, Gunyama Park Aquatic and Recreation Centre and the Drying Green. Future Improvements including the Green Square Public School and an ever growing retail network will only continue to make the area more desirable.

"This changing context has seen a shift in the market from investor product to larger owner-occupied dwellings which has underpinned the re-thinking of the design of Site 18."

They said the façade approach "contrasts a crisp white frame with a family of ‘cool’ infill elements that provide a calm and elegant backdrop for the staggered primary frame."

Mirvac recently topped out three of their Green Square apartment developments, The Frederick, Portman on the Park, and Portman House, which have a combined construction value of over $210 million.

Over 80% of the apartments are sold, to a mix of owner occupiers, young first home buyers and investors.

Mirvac CEO Development Stuart Penklis said the completion of the three buildings forms a significant milestone for the ongoing evolution of Green Square from one of the city’s oldest industrial suburbs to Sydney’s first new town centre in more than a century.

"The new community we are delivering in partnership with state and local government at Green Square has already contributed homes for over 1,000 residents, and these three new apartment buildings will see a further 685 residents calling the precinct home by the end of 2023," Penklis said.

When Mirvac complete Green Square they will have delivered more than 1,600 apartments.

Fast Facts about 960A Bourke Street, Zetland

Site 7: 19-storey building with an 8-storey podium fronting Green Square Plaza comprising ground floor retail, ground floor loading dock, commercial uses within the podium, 124 apartments, landscaped communal open space and landscaped podium roof terrace.

Site 17: 14-storey building with a 4-storey podium fronting Green Square Plaza comprising ground floor retail, commercial uses within the podium, 183 apartments and a landscapes podium roof terrace.

Site 18: 21-storey building comprising ground floor retail, 77 apartments and a landscaped roof terrace