Can I build a granny flat in The Hills Shire?
Instant SEPP Housing 2021 eligibility check for any The Hills Shire address — lot area, zoning, heritage exclusions (223 items in The Hills Shire), biodiversity values, and acid sulfate soils. Free.
Min. lot area
450 m²
SEPP Housing 2021
Heritage items
223
in The Hills Shire
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 The Hills Shire — common questions
Can I build a granny flat in The Hills Shire?
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.
What lot size is needed for a granny flat in The Hills Shire?
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.
Are heritage exclusions common in The Hills?
Heritage items and properties in heritage conservation areas are excluded from complying development. Historic village centres such as Rouse Hill and the Old Northern Road corridor have heritage areas. The checker above shows whether your address is affected.
What are the DCP setback requirements in The Hills Shire?
The Hills Shire DCP setbacks apply to a secondary dwelling assessed as a DA. On the CDC pathway, the SEPP Housing 2021 standards apply instead.
Do I need council approval for a granny flat in The Hills Shire?
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 The Hills Shire Council may be possible, unless the zone prohibits a secondary dwelling.
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.