If you have water on your property from a neighbouring property, it's a civil matter between you and your neighbour.
This applies to stormwater that comes from an adjoining property from:
Stormwater from adjoining land is regulated under the Water Act 1989. Under this law, the property owner is responsible for ensuring they don't cause nuisance to neighbouring or adjoining properties
We don't have the power to regulate this law, and we can't ask an adjoining owner to comply.
Options to help resolve the issue include:
Building Department Phone: 03 8470 8899 Email: building@darebin.vic.gov.au