So, I'd either find a local investment outside of real estate in Perth that makes sense, or team up with someone overseas, perhaps the USA where investing in the right states is very worthwile. 

.- Address buyer's concerns with reputable local professional and expert evaluations and written estimates.For example if the deck needs to be repaired or replaced, during the contingency period I'll attempt to have at least 1-2 licensed contractors provide written estimates.

Hey Sean, there is a steady demand for rentals due to its proximity to downtown and local amenities.

First I would call the local utilities and contractors who deal with this stuff to see if your assumption is true.For electricity maybe some sort of generator?

I invest locally in Columbus so free to shoot me anything you're looking at, I'd be happy to provide an opinion! 

Costs for residential street improvements will vary due to local code requirements for different materials, street types and layouts, and utilities.

Make smart choices by guessing your money flow, asking local pros for advice, and looking closely at the house.

Long term rentals to locals I would reccomend elsewhere though.

If you end up wanting to sell them or would just like to bounce ideas off someone local to the area, reach out to @Josh Green! 

For example if local rents are $3k/mo and your house hack in $1k in the red, thats a sweet deal.