With the emergence of services like Parkhound or Findacarpark I have heard stories of people buying car spots in high demand areas and renting them out, Airbnb style.
Car parks are selling for prices that match the amount of money a lot of 30 year old couples have ready to put down as a deposit. You may even be able to talk to the bank about a mortgage of sorts?
Assuming the average car spot in a CBD sells for $70k and you can earn $4.8k per year on it, you are getting decent returns with very little maintenance.
What are your thought OzBargainers?
Soon car parks will be in a bubble also and out of reach so people will be able to purchase a single public toilet as an investment. Junkies make good clients.