No doubt you’ve heard that mortgage rates are low. They’re lower than they’ve ever been in history.  The news is everywhere.

Just check out some of these headlines from the last 24 hours:

• Mortgage rates set new lows for the 6th straight week (Reuters)
• Mortgage rates fall again; 30-year fixed at 4.54% (Wall Street Journal)
• Mortgage rates hit another low : 4.54% (NPR)

Fixed mortgage rates are now down more than 1/2 percent from the start of the year, and 3/4 percent from just 1 year ago. The drop has dramatically improved home affordability for home buyers in Trabuco Canyon while creating refinance opportunities for existing homeowners.

From a payment perspective, a conforming, 30-year fixed rate mortgage is now cheaper by $41.94 per month per $100,000 borrowed versus July 2009.

A homeowner with a $300,000 mortgage, therefore, is saving $45,295.20 over 30 years.

Low mortgage rates rarely last long and rates appear to have troughed. After a big downhill between April and July, they’re now flat. This could mean rates have finished falling, or that they’re gearing up for another drop lower. Either way, if you haven’t talked to your real estate agent about home affordability, or your loan officer about refinancing, it may be time to make that call.

If today’s market marks the end of low rates, rates are expected to rise quickly.

Mortgage markets improved last week as economic data revealed a slowing U.S. economy.

Major stock indices fell to 2010 lows in response to a weak jobs report among other data points, forcing worldwide investors into the relative safety of U.S. government-backed bonds.  This category includes mortgage-backed bonds and the extra demand helped to drop rates.

Once again, mortgage rates improved in California and Freddie Mac is reporting new all-time lows on three popular, conforming loan products:

• The 30-year fixed rate mortgage
• The 15-year fixed rate mortgage
• The 5-year adjustable rate mortgage

Low rates mean low payments and you can’t know your options until you ask.

This week, mortgage rates may move slowly. There’s very little data set for release because markets were closed Monday in observance of Independence Day, and because the second calendar week of a month is traditionally data-slow.

Tuesday, a consumer confidence study is published; Thursday, jobless claims plus consumer credit levels hit; and, Friday, we’ll see wholesale inventories.  That’s about it.  None of these reports are particularly important but, in aggregate, the numbers can show whether the economy is expanding or contracting.

In general, evidence of an expanding economy should cause mortgage rates to rise.  In a contracting economy, rates are likely to fall.

Actual mortgage rates will vary by borrower, based on property type, credit score, and home equity, but if you haven’t talked to your loan officer about a refinance into today’s rates, it’s likely worth the time for a phone call.  Once mortgage rates start to reverse higher, they’re expected to reverse quickly.

You’ll want to act before that move occurs..