Sub divison with Zero lot ( maintenance easement )

Hi All

Property : 25M frontage and 30M depth, total 750SQM land

Location : Cumberland council NSW

What is process to get approval for Zero lot ( maintenance easement ) so that between 2 newly subdivided block, one block need to leave 900 mm side setback while other lot, can leave 0 or 100MM side setback.

Idea is with possible zero lot, one lot can have double garage.

I tried to check with council town planner but it was of no use.

Cumberland DCP says : "Side Setback (zero lot line) Maximum length of walls along the first floor side boundaries shall be 10m without any indentations or offsets or other articulation features. Indentations or offsets shall be a minimum width of 1m " . Does not clearly says on ground floor.


It would be great if you can share your experience or point me to experience town planner who are expert into it.