Darwin led the nation for rental yields in June

There are plenty of things to do out of the kindness of your heart, but investment probably isn't one of them. At the end of the day, if you put your money into something, chances are you're expecting to get a return.

Fortunately for investors in Darwin, high returns appear to be the norm.

The June RP Data-Rismark Hedonic Home Value Index showed that Darwin contained the highest rental yields for both detached houses and units over the three months to June 2014.

Not only did the Northern Territory capital see a gross rental yield of 6.1 per cent for houses, it also boasted a 5.9 per cent gross rental yield for units.

This could be attributed to more people seeking rental accommodations due to high house prices.

"With interest rates remaining low for the foreseeable future, it is doubtful that housing values will start to slide, at least not at a macro level," RP Data research director Tim Lawless said in a 1 July media release regarding the index.

Therefore, investors may want to focus their attention on property in Darwin's CBD or surrounding suburbs if they're in the market for some unit rental growth or detached home rental opportunities, respectively.