Get a more detailed overview of the city you are interested to invest. Rather than just looking at the city as a whole, go that bit deeper. Look at the different districts, look at the property prices and how they have been impacted by changes i.e gentrification that has taken place in the last years. This could be a good indication of the impact on the prices for the future.
A good indication of how realistic the property prices are, can be gauged on how long properties stay on the market before being sold. When properties are slow to sell , this could indicate room for negotiation! When properties are moving quickly, then you have to move quickly too!
Macroeconomic data can also provide some valuable information, particularly when you are looking at it from a ‘supply /demand’ perspective. Comparing the number of households in the district and the number of housing units available, is a good indicator how the property prices could develop. When the demand is higher than the number of properties available on the market, prices will rise.
The age of the inhabitants in a district will certainly have an effect on the property prices. Districts with a younger age group, those finishing their studies starting new jobs, starting families etc create a demand for cafes , restaurants, entertainment outlets, kindergartens, organic markets etc enabling new businesses for flourish. This in itself creates a further demand as more people want to be part of this and so, is then reflected in the property prices. Back to the supply/demand.
When a district has a healthy employment rate, therefore a stronger purchasing power, this will undoubtable have a more positive effect on the future potential for property.
The average net income in a district to some degree can be related with the employment status, but of course, a lower net income district with a high employment rate with young residents could also become a future area for development. Sometime we also have to take a longer term view.
By considering the number of people per household in a district, this will help determine which district best match with your requirements and investment strategy. Buying a 3 room apartment for a family could also work well for student sharing accommodation, if there is a high student presence in that district and the demand is there.