Development Approval (DA) is required when a project does not meet the automatic approval criteria of a CDA. A DA involves: Submitting formal plans to the local council. Consultations and assessments , This may include environmental, heritage, or neighbour impact assessments. Longer approval timeframes , Processing times can range from 4 to 12 weeks, depending on the council and project complexity. A DA is usually required for: Properties in special zoning areas (heritage, flood-prone, bushfire zones, etc.). Homes requiring variations in setbacks, height, or site coverage beyond standard allowances. Installations on land with unique topographical or environmental constraints.