For 63–67 McLachlan Street in Fortitude Valley, Brisbane, Cottee Parker has built a 16-story tower with "an abundance of tree and plant life" grafted onto it.

The Olive Branch, as it is known, is a 12-story office building with a wellness centre and a rooftop restaurant.

The lower levels' wellness space is protected from the street below and the western sun by a terracotta breeze block. With a succession of recesses sliding in and out along the street frontage, the tower above reacts to the escarpments of Brisbane tuff rock observed around the site. In planning documents, Cottee Parker states, “The built form is then overlayed with a veil of subtropical landscape.”

“Ground level planting reaches up and overlaps the cascading tower landscape.” The landscape design is by Martin Brothers.

The developer wants to build a building with zero carbon emissions, with all of the energy used being offset by renewable energy generation both on and off site.