ThisisMoney: Eastern property bubble at risk A Last year 19 property companies joined London's junior Aim market - the largest number for seven years. Of these 17 raised a record £1.16bn of new money to buy up both built and unfinished schemes in east European countries from Poland and Hungary to Bulgaria and Romania.FLOTATION bubble that saw £1bn of east European property firms come to the stock market last year is in danger of bursting.