The Holy Cross Convent Wooloowin, which a property developer bought from the Sisters of Mercy in 2015, is now seeking approval to begin major demolition on the site.

Two of the buildings on the site include the historic heritage-listed Holy Cross Convent and the Holy Cross Laundry; however, these buildings will be preserved.

The developer has plans to build 280 apartments and townhouses on the 3.8 hectare site with plans to commence the construction in the first half of 2019.

The council is now assessing the demolition application, with development plans approved in 2017.