If you own a house here
You most likely have a tree over part of the roof, yours or next door's. Willoughby City Council lets you prune up to 10% of a tree's crown over five years without a permit, and it won't approve removing a tree just because its branches hang over a boundary. In practice the leaves keep coming, and cleaning the gutters on a regular cycle is the fix. For a house under trees I recommend every 6 to 12 months.


