Can I build a granny flat in Northern Beaches?
Instant SEPP Housing 2021 eligibility check for any Northern Beaches address — lot area, zoning, heritage exclusions (956 items in Northern Beaches), biodiversity values, and acid sulfate soils. Free. Also check solar yield and shadow impact for any Northern Beaches address.
Min. lot area
450 m²
SEPP Housing 2021
Heritage items
956
in Northern Beaches
Flood data
EPI overlay
checked per address
What we check
Lot area
Min. 450 m² under SEPP Housing 2021
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 Northern Beaches — common questions
Can I build a granny flat on the Northern Beaches?
Many Northern Beaches properties qualify, but heritage exclusions are significant — 956 heritage items cover large portions of Manly, Avalon, and Pittwater. Coastal properties may also have biodiversity or acid sulfate soil exclusions. Check your address above.
Why might my Northern Beaches property be ineligible?
The most common exclusions are heritage (conservation areas in beachside villages), biodiversity values map (coastal heathlands and bushland areas), and lot size (some older beachside lots are under 450 m²). The checker above identifies which exclusion applies.
Does heritage affect granny flat approvals on the Northern Beaches?
Yes significantly. Northern Beaches has 956 heritage items. Properties in heritage conservation areas in Manly, Avalon, and Palm Beach are ineligible for CDC secondary dwellings and require a DA.
What lot size is needed for a granny flat on the Northern Beaches?
The minimum is 450 m² under SEPP Housing 2021. Many Northern Beaches lots are 600–900 m² in established suburbs. Some compact lots near Manly and Dee Why may be below 450 m².
Do biodiversity exclusions affect granny flat eligibility on the Northern Beaches?
Yes. Coastal heathland and bushland areas on the Northern Beaches are mapped on the Biodiversity Values Map. Properties within this map are excluded from SEPP Housing 2021 complying development for secondary dwellings.
Check other property risks in Northern Beaches
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.