Sydney Projects

Can You Build a Duplex in Castle Hill? Feasibility, Approvals and Key Risks

Can you build a duplex in Castle Hill? Learn the key feasibility checks: zoning, frontage, parking, stormwater, services and approvals.

TL;DR Whether you can build a duplex Castle Hill project depends on the site. Key checks include zoning, minimum lot requirements, frontage, driveway access, parking, stormwater, services, easements, trees, slope, neighbourhood character and approval pathway. Do not buy, design or demolish assuming duplex approval is automatic. Introduction A duplex or dual occupancy can be attractive for Castle Hill owners who want to unlock land value, create a home plus investment, house family members separately or prepare a resale strategy. But duplex feasibility is highly site-specific. A block that looks large enough may still be difficult because of frontage, access, stormwater, slope or planning controls. Why Duplex Feasibility Is Site-Specific A dual occupancy Castle Hill project is not only abou…