Tree removal permits in Mosman
Usually, yes. Some neighbouring councils list light pruning among their exempt works. Mosman says all pruning needs consent unless the work is on a species it lists as exempt, and it investigates breaches.
For size, council says the state policy covers trees 5m or taller, or with a trunk circumference (the distance around it) of 450mm or more, measured 300mm above the ground. Some trees are covered whatever their size: anything on the Urban Forest Management Register, trees 2m or taller in a heritage conservation area or on a heritage item, and tree ferns 2m or taller.
Applications are made and paid for online, or through the Trees Mosman app. Council says assessments usually take up to 10 working days. Only the owner or their agent can apply to remove a tree, and strata trees need a managing agent's letter or minutes showing majority support.
Tree removal in Mosman: what's local
Harbour on two sides
Council's bushland sites face both ways: seven look onto Sydney Harbour and eleven onto Middle Harbour. Its foreshore lands are the Mosman Scenic Protection Area, and council has made protecting the landscape quality of those slopes a priority.
National park next door
Much of Mosman's bushland, including big tracts at Middle Head, Georges Heights and Bradley's Head, is Sydney Harbour National Park. Council's own reserves are mostly regrowth Sydney Sandstone Gully Forest.
Named trees
The Urban Forest Management Register lists significant public and private trees, with the Balmoral Figs and the Holt Avenue plane trees among council's examples. Port Jackson figs often grow in rocky sites, and Mosman's bushland is sandstone country.
Vandalism is on council's radar
Council lists tree and vegetation vandalism among the problems in its bushland, and the Trees Mosman app has a button for reporting suspicious tree work.
Power lines
Ausgrid's trimming program listed Mosman in October and November 2026. For a tree touching a street line, call Ausgrid.
Questions to ask an arborist in Mosman
- Will you prepare the information council needs, and who lodges the application?
- If my reason is safety, can you put the risk in writing? Council says its assessments don't comment on hazard.
- How will the work be done on a sloping block, and where will the branches go?
- Is the tree on the Urban Forest Management Register, or in a heritage area?
- If you need to reach over the fence or stand on the neighbour's side, have you allowed time to get their agreement?
Hiring an arborist in Mosman
We'd assume consent is needed for any pruning until council or its exempt list says otherwise. Council says unsupported fears about a healthy tree failing don't usually justify pruning or removal, so if safety is the worry, we'd get an arborist's written risk assessment first. That's what turns a worry into evidence.