What is the maximum height/storeys permitted for a dual occupancy in RZ1?
A dual occupancy is generally designed as a low-rise development of 1–2 storeys.
For a dual occupancy in RZ1, the maximum permitted height is 2 storeys. The Missing Middle Housing Design Guide also identifies 1–2 storeys as the typical height for dual occupancy.
The achievable height will still depend on the applicable building height, setbacks and other planning requirements for the block.
Reference: Planning (Missing Middle Housing) Design Guide 2026 – https://www.planning.act.gov.au/__data/assets/pdf_file/0020/3092411/ACT-Missing-Middle-Housing-Design-Guide.pdf
Short Answer
For a dual occupancy in RZ1, the maximum is 2 storeys. This is also consistent with the Missing Middle Housing Design Guide, which describes dual occupancy as typically 1–2 storeys.
Detailed Explanation
For dual occupancy development in RZ1, the applicable mandatory planning controls limit development to a maximum of 2 storeys.
This is consistent with the ACT Missing Middle Housing Design Guide, which identifies 1–2 storeys as the typical height characteristic for dual occupancy.
Accordingly, for an RZ1 dual occupancy, 2 storeys should be treated as the maximum, subject also to compliance with the applicable building height, building envelope, setback and other development controls.
No minimum block size does not remove the need for planning assessment.
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