Glenorie’s larger rural properties can provide plenty of space for a secondary dwelling, but whether you can build a granny flat is still determined block by block. Under the NSW Housing SEPP, a secondary dwelling may use the complying development pathway on a lot of at least 450m², provided all applicable requirements are met, including the relevant 60m² floor area limit. Glenorie is unusual because the suburb crosses Hornsby Shire and The Hills Shire, so the applicable planning controls and consent authority depend on the exact address. Bushfire-prone land is an important consideration, as additional requirements can apply and some bushfire conditions prevent complying development. Onsite wastewater and servicing constraints also need to be checked, particularly on rural properties. A property assessment should come before finalising the granny flat design or approval pathway.
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The three things that shape a granny flat build in Glenorie: the planning rules, the ground you’re building on, and what the market gives back.
Median house price in Glenorie
Typical granny flat rent
Key local landmark
your block
nearest station
A granny flat in Glenorie can be approved through a private certifier as complying development when the lot is 450m2 or larger, the secondary dwelling is no more than 60m2 (or 25% of the main house, whichever is less), and setbacks, height and landscaping meet Housing SEPP 2021 standards. This pathway typically takes 10 to 15 business days once documentation is complete. Bushfire prone land does not rule out a CDC, but the design must meet the mapped Bushfire Attack Level, so the RFS map is the first thing we check. On rural or large lot zoned land in Glenorie the CDC route is usually not available, so a DA to council is the normal path.
Not meeting one complying development requirement does not rule a project out. Where a lot in Glenorie is zoned rural or large lot residential, is under 450m2, or is affected by bushfire prone land mapping, a development application can be lodged with Hornsby Shire Council. Assessment times are longer than a CDC, but the council does approve secondary dwellings through this route.
Glenorie is administered by Hornsby Shire Council and assessed under the Hornsby LEP 2013. Glenorie is mostly in Hornsby Shire Council, with a western portion in The Hills Shire Council. Granny Flats X confirms the consent authority for your specific block during the initial property assessment.
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The things Glenorie homeowners ask us most. Can’t find yours? Call us — we’ll give you a straight answer.
Usually 12-14 weeks from approval. We fast-track the council paperwork.
Yes. Most Glenorie blocks support 60m² 2-bedroom layouts.
Yes, but we handle the entire approval process for you.
