Feasibility comes before design
A duplex enquiry starts with the site: planning controls, frontage, services, parking, driveway access, stormwater, neighbouring properties and the approval pathway that may apply.
Two homes still need one clear sequence
A duplex build needs careful coordination across both dwellings so structure, services, external finishes, internal selections and handover quality stay consistent.
Specialist advice may be needed
Planning, design, engineering and certification requirements depend on the site. The builder conversation should identify what is known and what needs specialist review before the project is priced properly.