Does changing windows require an amendment to the DA?
Not always. Changing windows after DA approval may not require an amendment to the DA if the window change would itself be DA-exempt if carried out after the development was completed. However, if the change does not meet the exemption criteria, or otherwise changes the development beyond what is covered by the existing approval, a DA amendment may be required.
Minor changes to approved windows can sometimes be made without amending the DA.
ACT Planning explains that an approved DA generally does not need amendment where the proposed change would not need DA approval if it were made after the development was completed, subject to specified exceptions.
The Planning (Exempt Development) Regulation 2023 provides exemptions for certain changes to external doors and windows. Depending on the circumstances, this can include replacing a window, reducing its size, or increasing its width or height within specified limits. The exemption also includes requirements relating to the window's height above ground and its distance from side and rear boundaries.
Reference: Planning (Exempt Development) Regulation 2023 (SL2023-21),Schedule 1, Division 1.4.1 – Installation, alteration and removal of external doors and windows
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| Dual Occupancy Q&A | #516 | agrees | 28/08/2026 |