Questions & Answers

What inspections are required during construction?

For a dual occupancy, the building certifier must inspect the work at prescribed stages. For Class 1 residential buildings, these generally include:

  • Footings: after excavation, formwork and steel reinforcement are completed, but before concrete is poured.
  • Reinforced concrete: after formwork and reinforcement are completed and before concrete is poured.
  • Structural frame: after the structural framework is completed and before internal linings are installed.
  • Final inspection: when the building work covered by the Building Approval is completed.

The certifier may require additional inspections depending on the project. Separate mandatory ACT Government inspections also apply to relevant electrical, plumbing, drainage and gasfitting work.

Reference: ACT Planning : During Construction, Inspections – https://www.planning.act.gov.au/community/build-or-renovate/during-construction

Last reviewed: 27 August 2026 Information current as at: 1 September 2026

Short Answer

For a dual occupancy, required inspections generally cover footings, reinforced concrete, structural framing and completion of the building work. Additional inspections may be required, and separate inspections apply to electrical, plumbing, drainage and gas work.

Detailed Explanation

The appointed building certifier must inspect building work at the prescribed stages and any additional stages stated in the Building Approval. For Class 1 buildings, relevant prescribed inspections include footing excavation/formwork/reinforcement before concrete placement, reinforced concrete members before pouring, structural framework before internal lining, and completion of the approved building work.

The builder must notify the certifier when the work reaches a stage requiring inspection, and the work must not proceed beyond a prescribed stage without the required inspection/authorisation.

Key Point

No minimum block size does not remove the need for planning assessment.

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