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Home / Tree Encyclopedia / Sydney Red Gum

Sydney Red Gum

Angophora costata · Myrtaceae

25mMature height
0Councils: no permit needed
0Councils: exempt under a height limit
20Councils: permit required
Sydney Red Gum (Angophora costata) growing in Sydney
Sydney Red Gum · typical mature form

Do you need a permit?

Sydney Red Gum is a protected tree in effectively every council Pro Climbing Tree Services covers. Expect to need a tree permit, or a development application where the property is heritage listed or in a heritage conservation area.

How to identify it

A sculptural tree with a smooth salmon pink to orange trunk that sheds each summer to reveal fresh bright bark, and heavy twisting limbs. Unlike true eucalypts the leaves are arranged in opposite pairs. Cream flowers in dense clusters through late spring and early summer.

Where it grows in Sydney

The signature tree of Sydney's sandstone country. Very common through the Northern Beaches, Ku-ring-gai, Hornsby, Lane Cove, Hunters Hill and Willoughby, often on rock shelves and in dedicated bushland reserves.

Common problems

  • Large horizontal limbs prone to summer branch drop
  • Shallow rooting over sandstone makes it sensitive to soil disturbance and level changes
  • Frequently listed on significant tree registers, which removes exemptions
  • Heavy annual bark shed

What removal involves

Councils defend this species strongly, and removal applications generally need a clear structural or health justification supported by an arborist assessment. Where it is retained, work is more likely to be approved as deadwood removal and selective reduction. Sensitive to root zone works, so landscaping and excavation near the trunk often needs a tree protection plan.

Council permit rules, council by council

Status below is for a tree on private land that has passed the council's size threshold. Heritage items, heritage conservation areas, significant tree registers, biodiversity mapping and conditions of development consent override every exemption shown here.

CouncilStatusWhat it means
Northern Beaches Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Ku-ring-gai Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Hornsby Shire Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
The Hills Shire Confirm with Council Council holds its species exemptions in a document rather than on its website, so confirm this species with Council before treating removal as exempt. Size thresholds apply in the meantime.
Blacktown City Permit required Council does not run a species exemption list. A permit is required once the tree passes the size threshold, and each tree is assessed on its own merits.
North Sydney Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Willoughby Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Lane Cove Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
City of Ryde Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Hunters Hill Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
City of Sydney Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Inner West Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Woollahra Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Waverley Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Randwick Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Bayside Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Georges River Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Strathfield Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Burwood Confirm with Council Council holds its species exemptions in a document rather than on its website, so confirm this species with Council before treating removal as exempt. Size thresholds apply in the meantime.
Canterbury-Bankstown Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.

Frequently asked questions

Why is Sydney Red Gum so hard to get approval to remove?

It is a keystone species of the Sydney sandstone landscape, is habitat for hollow dependent fauna, and is frequently listed on significant tree registers. Councils apply a high bar and usually want an arborist report addressing health, structure and risk.

It keeps dropping big limbs. Is that normal?

Summer branch drop is a known habit of the species, but repeated failures can also indicate decay, poor unions or root zone damage. Get it inspected rather than assuming it is normal.

Related trees

Important note on council rules

This encyclopedia is a practical guide for Sydney property owners, not legal advice. Council tree rules change, and exemptions are frequently overridden by heritage listings, heritage conservation areas, significant tree registers, biodiversity mapping, endangered ecological communities and conditions attached to development consent. Always confirm the current rules with your council for your specific address before any tree work begins, or ask us to check it for you.

Photo by Mayumi Kataoka via Wikimedia Commons, CC BY-SA 4.0

Not sure where your tree stands?

Our arborists work across 20 Sydney councils every week. We will identify the species, check the rules for your address and handle the permit application if one is needed.