Time To Refinance? Mortgage Rates Down 1.00 Percent Since April.

30-year fixed mortgage rates rose last week, marking the first time in a month that rates failed to fall week-to-week.

The data sources from Freddie Mac, one of the government's major mortgage securitizers and a sister entity to Fannie Mae. Each week, Freddie Mac collects mortgage rate data from more than 120 lenders nationwide and publishes the results in a report called the Primary Mortgage Market Survey.

According to this week's PMMS, the 30-year fixed rate rose 0.02% and now averages 4.21% nationally. The average accompanying cost is 0.8 points.

1 point is equal to 1 percent of the loan size.

Note, though, that these are just averages. Just as real estate markets are local, mortgage rates can be, too. As an illustration, look how this week's rates break down by region:

• Northeast : 4.22 with 0.8 points
• Southeast : 4.30 with 0.8 points
• N. Central : 4.19 with 0.8 points
• Southeast : 4.23 with 0.7 points
• West : 4.17 with 1.0 points

The rate-and-fee combination you'd get in your home state , in other words, is different from the rate-and-fee combination you'd get if you lived somewhere else. In the West, rates are low and fees are high; in the Southeast, it's the opposite.

The good news is that, as a rate shopper, you can have it whichever way you prefer. If getting the absolute lowest mortgage rate is worth the extra cost to you, have your loan officer structure to structure your loan as such. Or, if you prefer higher rates and lower costs, you can go that route, too.

Banks offer multiple mortgage set-ups to meet every type of budget and, with rates down 1.00% since April 8, there's good cause to call your loan officer about a mortgage refinance. See what set-up will work best for you.