Market Insider: How Long Will this Housing Shortage Last?By Lawrence Yun  Home prices have risen at a double-digit rate since early spring. This robust appreciation appears nearly certain to last for the remainder of 2013 and the reason is basic economics: increasing demand and tight supply. With a 13-year low inventory of existing home listings and a 50-year low for newly constructed home inventory, buyers are increasingly forced to bid with an escalation clause in hopes of winning a home.			
			
		
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Home prices have risen at a double-digit rate since early spring. This robust appreciation appears nearly certain to last for the remainder of 2013 and the reason is basic economics: increasing demand and tight supply. With a 13-year low inventory of existing home listings and a 50-year low for newly constructed home inventory, buyers are increasingly forced to bid with an escalation clause in hopes of winning a home.			
			
		
			
	 
	