Peeling facades, abandoned buildings and potholed lanes in Istanbul's trendy Beyoglu mask a housing market boom which is tempting foreigners to invest in the city and doubling the price of a Bosphorus view. Foreigners have been allowed to buy property in Turkey again after a suspension last year and Duru Real Estate in Beyoglu -- traditionally the diplomatic centre, now packed with pricey bars -- is hiring new staff to meet the demand.