Townhouse Development NSW 2026: Complete Guide to Designs, Costs, Zoning & Approval Pathways Townhouses have emerged as one of the fastest-growing housing types in Australia. In 2026, townhomes now represent more than 18% of all single-family construction starts — up from less than 10% a deca... Approval Process BASIX LEP/DCP NSW Planning Residential Projects Secondary Dwelling Sustainable Building Aug 2, 2026