I think the risk factors, namely, interest risk and property price risk, the first one can be hedged or diminished anyway, since the interest rate goes up, it's always a good deal to get a relatively lower rate mortage, in the case interest rate falls, it generally indicate a good state of the economy, so the price for rental will be higher, the money collected on monthly rental fee will compensate the loss of a higher mortage payment.
The only investment desicion should hence base on your expectation of the future real estate market and your financial plans, if as many analysts predict, there would be a rise in the real estate market, it might be a soundy choice to buy some properties, as long as you can afford. Carefully choose the location and the environment.
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