Can I build a granny flat in Ku-ring-gai?
Instant SEPP Housing 2021 eligibility check for any Ku-ring-gai address — lot area, zoning, heritage exclusions (1,046 items in Ku-ring-gai), biodiversity values, and acid sulfate soils. Free.
Min. lot area
450 m²
SEPP Housing 2021
Heritage items
1,046
in Ku-ring-gai
Flood data
EPI overlay
checked per address
What we check
Lot area
Tested per approval path (CDC frontage band, DA site area)
Zoning
R1, R2, R3, R4, R5/RU5 under SEPP Housing 2021 cl 49
Heritage exclusion
Heritage items and conservation areas
Flood control lots
Statutory flood overlay check
Biodiversity
Biodiversity values map exclusions
Acid sulfate soils
Class 1 & 2 soil exclusions
Dual occupancy prohibition
LEP prohibition map check
Granny flats in Ku-ring-gai — common questions
Can I build a granny flat in Ku-ring-gai?
It depends on the property. Under SEPP Housing 2021 a secondary dwelling needs a zone that permits it, a lot that meets the minimum size, and none of the SEPP land exclusions (such as heritage, flood, biodiversity values and some acid sulfate soil classes). The checker above tests each one for your address.
Why do so many Ku-ring-gai properties fail the heritage check?
Heritage items and properties within heritage conservation areas, including those across Gordon, Killara, Lindfield, and Wahroonga, are excluded from SEPP Housing 2021 complying development. The checker above shows whether your address is affected.
What lot size is needed for a granny flat in Ku-ring-gai?
SEPP Housing 2021 sets a minimum lot size for a secondary dwelling. The checker above reads the minimum from the SEPP and compares it with the lot area for your address.
Can I still build a granny flat if my Ku-ring-gai property fails SEPP?
Yes. A property that fails a SEPP Housing 2021 check can be assessed through a DA lodged with Ku-ring-gai Council.
Are biodiversity exclusions common in Ku-ring-gai?
Biodiversity exclusions can apply. Properties on the Biodiversity Values Map are excluded from SEPP Housing 2021 complying development for secondary dwellings. The bush corridor including Garigal National Park and local reserves can be mapped. The checker above tests the map for your address.
Also check nearby councils
Checks lot area, zoning, heritage items and conservation areas, flood control lots, biodiversity values, and acid sulfate soils against SEPP Housing 2021. Flood check uses NSW EPI statutory overlay — shown as unknown outside coverage. DCP setback and height controls not included. Not legal advice.