Demographics of Poland
According to GUS, about 38,325,000 people live in Poland, however, the same report states that the number of residents living in the country all the time is approximately 37,200,000; with 1,125,000 people living abroad for 6 to 7 months or more. It means that the permanent population may be correspondingly smaller.
Polish property bubble
In early 2007, it can be argued that the Polish property market began to show the early signs of a property bubble: 
As of 2013, house prices in Poland have been falling since mid-2008. Compared to pre-crisis peaks: 
The arguments for further real estate price rises or stabilization are:
In addition, Warsaw has a population of only 2 million people – approximately 5% of the whole of the country – which is very low for a capital city. Poland is also one of many countries with a rather high house price to income ratio (13.58) and an estimated rental profitability between 3.92% to 4.31% for residential units.