CALABASAS, CA--(Marketwire - February 28, 2011) - According to Informa Research Services, the national average rate on 30 year fixed rate mortgages returned to 5.13% this week after nudging higher last week at 5.2%. While rates appear to be continuing their upward trend, it is difficult to say precisely where rates are heading and when they will change. Nonetheless, Informa Research Services suggests educated consumers research mortgage rates online before deciding how to finance their home purchase.