Canada: properties are very expensive here almost 50% more than that of USA. A much slower economic growth will follow fueled by falling commodity prices which will continue as Canada is a major exporter to the EMs hence affecting the Real Estate prices more likely from 2018 onward.
Australia: same as above (except for the prices part).
Spain: Is somewhat okay for an investment till around 2019/2020 where there will be some good moderate economic growth and also prices are lower since their 2007/2008 peak.
USA: it will take too long to write this but it is a mixed view. It is both good and bad and depends where you want to invest i.e. Apartment, start-up homes or trade-up homes and where. USA's major cities are almost 80%+ urbanized and prices are too high and no room for growth like Houston, LA, San Fransisco, Las Vegas, Seattle etc. So it is not worth investing. However, in the suburbs it is a good investment esp. Near colleges or universities for instance where there is always demand of buyers and renters. Note that if you are interested to invest for the short term than these localities are heavens because right now they are offering the best ROI in terms of rentals.
Price/Income Ratio:
Paris: 17% approx.
London: 14% approx.
Sydney: 11% approx.
New York: 10% approx.
Toronto: 9% approx.
In DMs/EMs price increases since 2000 as as under:
Shanghai= 530% increase
Mumbai= 400%
Dubai= 300%
Hongkong= 200%
London= 120%
Sydney= 105%
well in terms of investment there are 5 places i think which are good for investment they are Greece, Brazil, India, Russia and Pakistan. There are many reasons surrounding it but as an indicator check their Debt to GDP ratio esp. The level of their CONSUMER and CORPORATE debt, their Urbanization rates, population/labor growth rates and most important their Industrialization growth and you will know everything.
Sorry i don't know about internal societies like which are good to invest. I just gave a general view. Hope it helps.