Here's a defintion: – The term "conforming" is most often used when speaking specifically about a mortgage amount; however, the terms "conforming" and "conventional" are frequently used interchangeably. Mortgages that exceed the conforming loan limit are classified as non-conforming or jumbo mortgages. The conforming limits are re-set annually in October. Here is a link to FannieMae website for the limits in 2014 //www.fanniemae.com/singlefamily/loan-limits
source: investopedia