550 dwellings — 57 Old Castle Hill Road, 59 Old Castle Hill Road, 61 Old Castle Hill Road, 63 Old Castle Hill Road, 16 Gay Street, 18 Gay Street, Castle Hill
Declared State Significant — on the fast-track
348632HDA EOI
Declared State Significant — on the fast-trackStage
550Dwellings (indicative)
40 storeysScale sought
Developable Pty LtdApplicant
The Hills Shire CouncilCouncil area
2026-06-22HDA briefed
Construction of a 40 storey residential flat building comprising of 550 dwellings with a 5 storey podium. Affordable housing proposed at 10% for 15 years.
From the NSW Housing Delivery Authority's published record of briefing. Dwelling and height figures are the applicant's proposal — assessment can change them.