How much of my block can I build on?
The amount you can build on depends on your block and development type: Single dwelling / secondary residence: generally 40%–70%, depending on the block type. Dual occupancy: generally 45% in RZ1/RZ2 and 50% in RZ3–RZ5. Other planning controls may further restrict the buildable area.
How much of your block you can build on depends on the block type, residential zone and type of development.
For a single dwelling or a dwelling with a secondary residence (granny flat), the maximum site coverage is generally 40% for a large block, 60% for a mid-sized block and 70% for a compact block. The main house, secondary residence and relevant roofed structures are considered together when calculating site coverage.
For a dual occupancy, which is treated as multi-unit housing for these requirements, the maximum site coverage is generally 45% in RZ1 and RZ2 and 50% in RZ3, RZ4 and RZ5.
Other planning requirements, such as setbacks, private open space, planting and building height, may further limit how much of the block can actually be developed.
Reference: Territory Plan 2023 (NI2023-540), Residential Zones Policy, Assessment Requirements 7 and 8 (Site Coverage) - Territory Plan 2023 | Notifiable instruments
Link on the answer: https://www.legislation.act.gov.au/ni/2023-540/Current
Where this question is kept
| Dual Occupancy Q&A | #332 | agrees | 10/08/2026 |