There are more than half a million unsold new homes on the Spanish housing market, down 5.6 percent from 2014, according to a recent report published by the Ministry of Public Works. The provinces with the greatest volume of excess stock include Barcelona, Alicante and Madrid. Experts predict that it may be difficult to absorb the country’s oversupply of unsold housing, the majority of which were built during the boom years. A portion of this stock has even been rated as “unsellable” by developers.