Consistent with most post-home buyer tax credit housing news, the National Association of Realtors® says Existing Home Sales eased lower last month.

An “existing home” is a home that cannot be considered new construction.

The 5 percent drop in sales from May to June was expected, but a closer look at the month’s data reveals some interesting trends.

First, repeat buyers accounted for 44 percent of home resales in June, up from 40 percent in May. That’s a healthy increase for just 4 weeks’ time and the tax credit is a likely catalyst. First-timer buyers bought starter homes owned by former first-timers, who were then free to “move up” to larger, more expensive property.

Housing markets can be trickle-up and, not coincidentally, the jumbo/luxury housing market is now in the midst of rebound.

Second, June’s “distressed sales” accounted for 32 percent of all home resales, up from 31 percent in May.

A figure like this hints at the large role foreclosures continue to play in a Santa Rosa home buyer’s home search strategy.  And why not? The National Association of Realtors® suggests that distressed homes are sold at a 15 percent discount.

Lastly, take note that home inventories are rising. June’s 8.9 months of supply is the highest in 10 months. Excess supply leads home prices lower, all things equal.

Overall, the Existing Home Sales data from June is a mixed bag. There’s support for the middle- and upper-price tiers, but a growing overhang of supply. The market looks favorable for buyers given low mortgage rates and strong negotiation leverage.

Conforming and FHA mortgage rates improved last week on the combination of weaker-than-expected economic data and new anti-banking rhetoric from the White House.

The S&P 500 shed nearly 4 percent in its worst weekly showing since October 2009 as all 10 sectors fell. As the money left stock markets, it made its way to bonds — including the mortgage-backed variety.

As a result, California mortgage rates fell for the third straight week.

Since shedding 300 basis points in December, mortgage bond pricing has recovered a bit more than half of those losses.  It’s helping with home affordability and opening new refinance opportunities in Santa Rosa and around the country.

This week, though, mortgage rates could rise back up.  There’s a lot going on.

First, on Monday, the December Existing Homes Sales report will be released.  The report is expected to be extremely weak as compared to November.  This is because of a combination of factors including:

1. The initial tax credit expiration date of November 30, 2009
2. Sharply rising mortgage rates throughout the month of December
3. A general slowdown from the holidays and from the weather

Therefore, don’t be surprised by the newspaper headlines you see Tuesday morning.

Other data this week includes the Case-Shiller Index – a measure of home prices nationwide — and the New Home Sales report. The Case-Shiller Index has registered mild home price improvement over the past 8 months and its latest report is expected to show the same.  New Home Sales should be similarly strong.

But, the biggest news of the week is the first Federal Open Market Committee meeting of 2010. 

The Fed meets Tuesday and Wednesday this week and Wall Street will be watching closely.  The Fed is not expected to change the Fed Funds Rate from its current target range of 0.000-0.250 percent, so, instead, markets will watching for the Fed’s post-meeting press release.

What the Fed says about the economy will be much more important that what it specifically does about the economy for now.  If the Fed says the economy is growing as expected, look for mortgage rates to rise. Conversely, if the Fed says the economy is at risk, expect mortgage rates to fall.

The safest rate lock strategy this week is to lock your mortgage rate before the Fed’s 2:15 PM ET adjournment Wednesday.  Rates will be bouncy all week, but once the Fed’s press release hits the wires, it’s anyone’s guess what will happen.