12 HARKNESS STREET WOOLLAHRA 2025

A development application (DA) is lodged with NSW Planning Portal (State) when a property owner seeks consent to build, renovate, demolish, subdivide or change the use of a property. This record is part of Council DA's database of 3.97 million development applications from 290+ Australian councils.

Tracking DAs like this one helps residents stay informed about neighbourhood change, and helps builders, agents and researchers understand local development trends.