Drainage Easements

General requirements for stormwater drainage of new development can be found in Section 1C.1.2 Stormwater Management of the Hornsby Development Control Plan.

Stormwater should be gravity drained to Council’s drainage system, which may require inter-allotment drainage, except for single dwellings on existing lots where inter-allotment drainage is not available.

Where an inter allotment drainage easement is required, proponents should negotiate the creation of easement/s over downstream properties for drainage purposes. A letter of consent from the owner/s of the downstream properties is to be submitted with the development application.