Bushland suburbs with the rules to match
Willoughby City Council covers a long strip — Naremburn and Willoughby proper in the south, out through Middle Cove, Castle Cove and Castlecrag to the Middle Harbour foreshore, and north to Chatswood. It is one of the greenest municipalities on the North Shore and it protects that canopy harder than almost any council in the state.
If you own a tree in Willoughby, start from the assumption that it is regulated. The height and diameter thresholds are low, the exemption list is short, and unauthorised removal is followed up. That is not a reason to avoid dealing with a genuinely dangerous tree; it is a reason to do it through the process, with an arborist's assessment behind it.
The blocks and the access
Naremburn and the streets around Willoughby Road are close-packed inter-war and post-war housing with narrow side passages, which makes almost everything a climbing job with hand-carried timber.
East of Eastern Valley Way the character changes. Castlecrag, Castle Cove and Middle Cove are bushland blocks on sandstone, terraced into the slope, with houses set among rock outcrops and reserves. Access is frequently by steps from a carport above, or from a street below the house. Flat Rock Gully and the Sailors Bay catchment cut through the area and much of the adjoining bushland is council reserve.
What grows here
Sandstone country species dominate the eastern half — angophora, Sydney peppermint, red bloodwood, scribbly gum, with coastal tea-tree and banksia in the understorey. The angophoras over the Castlecrag rock outcrops are frequently the reason a block was bought in the first place, and they are also the species that sheds heavy limbs in summer. Deadwooding and careful reduction is usually the right answer, not removal.
In Naremburn and Willoughby proper the mix swings to planted exotics: liquidambar, camphor laurel, jacaranda, plane and a lot of tired conifer hedging.
Salt, wind and the harbour edge
Blocks facing Middle Harbour and Sailors Bay cop salt-laden south-easterlies. Exposed foliage burns, exotic species struggle, and trees on the windward face lean permanently. A wind-shaped lean a tree has grown into over decades is normally stable. A new lean, or cracked soil on the windward side of the root plate, is not, and is worth an inspection.
Ring (02) 9090 4915 before cutting anything here. Nearby: Chatswood and Lane Cove. See the pruning page for what is usually permitted without an application.
Frequently asked questions
How strict is Willoughby Council about tree removal?
Very. Willoughby operates one of the more restrictive tree regimes in New South Wales, with low thresholds for what counts as a protected tree and active follow-up on unauthorised removal. Assume a permit is required and work backwards from there. A crew that tells you it will be fine is a crew putting you at risk, not them.
Is Castlecrag different from the rest of Willoughby?
In practice, yes. Castlecrag was laid out by Walter Burley Griffin around its natural sandstone and bushland, with reserves woven between the houses and a strong local culture of keeping the canopy. Between the council controls, the bushland reserves and, on some titles, private covenants, the presumption there is firmly that the tree stays.
Can I prune a protected tree without applying?
Minor maintenance — small deadwood, a bit of clearance from the roof — is generally allowed, but the permitted amount is limited and significant pruning of a protected tree needs consent in Willoughby just as removal does. If you are unsure whether your intended cut crosses the line, it is a free phone call to find out.