Can I build a granny flat in Hawkesbury?
Instant SEPP Housing 2021 eligibility check for any Hawkesbury address — lot area, zoning, heritage exclusions (604 items in Hawkesbury), flood control lots, biodiversity values, and acid sulfate soils. Free.
Min. lot area
450 m²
SEPP Housing 2021
Heritage items
604
in Hawkesbury
Flood data
ARI scenarios
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 Hawkesbury — common questions
Can I build a granny flat in Hawkesbury?
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.
How does flooding affect granny flat eligibility in Hawkesbury?
The Hawkesbury-Nepean catchment has flood mapping. Properties on flood control lots are excluded from the CDC pathway and need a DA. The checker above reads the flood overlays for your address.
What heritage restrictions affect granny flats in Hawkesbury?
Heritage items and properties in heritage conservation areas are excluded from complying development. Areas around Windsor, Richmond, and Wilberforce include heritage-listed properties. The checker above shows whether your address is affected.
What lot size is needed for a granny flat in Hawkesbury?
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.
Do I need a DA for a granny flat in Hawkesbury?
If all SEPP Housing 2021 checks pass, a CDC through a private certifier is the pathway and no council DA is needed. If any check fails, the CDC pathway is not available. A DA through Hawkesbury City Council may be possible, unless the zone prohibits a secondary dwelling.
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 ARI-quantified data for Hawkesbury. DCP setback and height controls not included. Not legal advice.