Phone Lee Perry, Harcourts Mandurah he is a real estate agent and also a developer. I think he just completed a 10 unit site. I used him to sell a property recently, he knows the market inside out and a nice guy.
What has been happening is the development blocks close to central Mandurah have started to rise and developers are buying these. Not sure whether you could still purchase around $500K range.
As far as properties go the high end stuff has still not recovered, with some areas dropping back as much as 40%.
FHB/Investors have been buying $500K range and below, however the market is still price sensitive, in other words if the property is overpriced it will not sell. I would not say it has risen that much, certainly no where near what we have experienced in Perth over the last 2 years. IMO it is at the bottom of the cycle, starting to recover. How long you will wait for growth, I can not say, I still believe some time off yet.
Also, properties in Mandurah do not rent as high as in Perth.
There are a couple of ways to achieve a higher yield, look at house and land packages, perhaps Lakelands as there is the rail, on cottage lots, perhaps $360K, rents for $420pw ??
If you like this market do lots more research, you have time on your side. Have a look at posts by "Of The Vulture", she purchased a cheap property, on very large block and I think currently building a new home at rear. Possibly will end up cash flow positive, she may be prepared to share the numbers.
Cheers
MTR