Yet many of these investors are being sent to the wall by bad tenants who have the odds stacked in their favour.
Now one mother is about to lose everything due to the tenants that refuse to pay, and refuse to budge.
Forget about entering her property, Michelle Riley can't get within 50 metres of it. Riley's house is being held hostage and there is very little she can do to get it back.More stories from Today Tonight
As a battling small business owner, she knows her way around a balance sheet, and says tenant is well and truly in the 'red' zone.
Kathleen Wilson is Riley's tenant who, despite owing thousands of dollars in rent, is refusing to leave the duplex unit.
Riley describes Wilson as a squatter, who owes her $4900.
Wilson and her partner Eddie Boekelman are well known on the Australian music scene. Wilson runs a stage rigging company whilst Boekelman is a musician.
"Apparently he played with Stevie Wright, who is an Australian rock icon and Gangajang - a very well-known Australian band," Riley said.
Wilson's reluctance to pay rent has struck a sour note with Riley and her daughter Sarah who now stand accused of calling in death-threats over the missing rent.
"She (Wilson) has accused me of going to smash her head in apparently via text messages and a phone call. They are not mine, it is not even my number," said Sarah.
Wilson certainly believes she has been mistreated by her landlord, Riley.
"They threatened my life. Despite me owing one or two or three weeks or a year in rent, it doesn't matter," she said.
Complicating the issue, Riley has been slapped with an apprehended violence order (AVO), preventing her from going within 50 meters of her home.
The Consumer, Trader and Tenancy Tribunal is sympathetic towards Wilson, ruling that she is able to stay because when Riley issued her with breach notices she did not use the correct terminology on the paperwork.
Furthermore, Riley cannot hand her tenants the notice in person because she is unable to go near them.
Unhappy with her situation, Riley says that landlords need some rights as well. "At this point we have very little rights," she said.
It is a problem being felt by landlords across the country, according to Property Owners Association President Bruce McBride.
"This small percentage of very bad tenants does exploit the loopholes in the law, and the difficulties the landlords have in getting a quick and immediate justice," said McBride.
He says until a better balance is struck between the rights of landlords and tenants, disputes like this will increase.
"I think the eviction process takes far too long. I think once the tenant is in arrears with the rent, and particularly if they're a long way in arrears as is the case now, I think the case should be sped up so an immediate eviction can be obtained," McBride said.
Whilst Riley awaits her next tribunal hearing, both her rental and family home remain on the market. She has been forced to sell both because she can't afford both mortgages while Wilson continues not to pay rent.
This reporter is on Twitter at @DamienHansen7