Where do you find info on these? Government reports would show their plans but I'm not sure where to get others.
Typically where to look for the following sectors injecting money -
A/ Local/State/Federal Government. ie Major arterial roads, Street Scaping, New Public Transport, Recreational facilities, Hospitals, Suburb Redevelopment Authorities being formed. etc
B/ Big Multi National Retail & Commercial type companies. ie Major Shopping Centres, McDonalds Hungry Jacks, KFC, Bunnings, Harvey Normans, Good Guys, etc. These companies spend $Millions on market research before going into and setting up shop in an area. If there was no current or immediate future demand for their products and services they would not be moving in, so leverage off the back of their research.
Sources for information as part of your due diligence - You can check out all the federal/state/local government planning & development websites at this one convenient link (http://www.oultwood.com/localgov/countries/australia.php).
Other sources I use to gather info are from all the various big multi-national company websites, local newspapers, community news, local businesses, and people in the area.....general networking etc.
C/ Private People/Investors. ie Owner occupiers and Investors bowling over old houses then rebuilding new modern homes and redeveloping town houses / villas. Get out and about. Jump in your car and drive around the area. Better still is once you're in your prospective area hit the streets by foot. You will see so much more on foot than by driving.
Anyway I hope this provides you more food for thought.