Generally if the easement is extensive and affects a large portion of the parcel, and if the EASEMENT HOLDERS HAVE A "RIGHT OF ENTRY" (stipulated in the title & underlying docs) to this parcel and if you find out through them that they plan to exercise that right, then you should not build on the parcel, as it would be a grave risk for your investment. It is best to ask all agencies to provide you all infos in writing.
You will need to go the Department o Building and Safety and also the Planning Department to determine the exact location of the drains and how deep they are underground. You will also need to submit plans for building that will need to be approved by them as well.
â€¢For information on underground pipes, cables or other assets, you can call Before You Dig on 1100 or visit http://www.1100.com.au .
best of luck!
Ron Escobar, MBA
Broker & General Contractor