After two months of surging sales, home resales fell by 100,000 units last month to 4.4 million homes nationwide.

October’s Existing Home Sales tally is slightly below the report’s 6-month rolling average, according to the National Association of REALTORS® — a time span which includes this year’s $8,000 federal home buyer tax credit’s tail end.

Housing statistics have been wildly inconsistent during that period.

For the future of San Francisco housing markets, though, it’s encouraging that first-time and investment property buyers were both outnumbered by “move-up” buyers; buyers that have sold their respective homes in favor of larger ones. It’s the move-up buyers that power housing.

In October, buyer profiles broke down as follows:

• First-time buyers : 32 percent of all buyers, unchanged from September
• Repeat home buyers : 49 percent of all buyers, down one tick from September
• Investors : 19 percent of all buyers, up one tick from September

As a point of comparison, first-timers represented 50 percent of all purchases in October 2009.

For home buyers, October’s Existing Home Sales report is neither weak nor strong. It signals that, with mortgage rates low and home affordability high, housing may be reaching some form of balance. Because — although home sales are down — home supplies are down, too.

We can infer that buyers outnumber sellers, but probably not by much. In most areas, negotiation leverage is still up for grabs.

At the current pace of sales, the complete housing stock would be depleted in 10.6 months.

Sales of existing homes rose in April, buoyed by an expiring home buyer tax credit and exceptionally low mortgage rates.

As compared to March, April’s Existing Home Sales rose by 410,000 units nationwide — the second straight month of large gains. An “existing home” is a home resold by a prior owner (i.e. not new construction).

It’s a solid report for housing overall, with rising sales suggesting that the real estate market’s recovery is ongoing. However, the data presented a mixed message.

According to the National Association of Realtors®, although the number of homes sold ticked higher in April,  so did the supply of existing homes for sale, too.

Sellers are now listing homes faster than buyers can buy them.

After adding another 0.3 months of supply in April, resale home supply is nearly two full months larger than at November 2009′s low-point. This put downward pressure on home prices.

Furthermore, because 49% of April’s buyers were first-time buyers and the tax credit has since ended, we can expect that sellers will continue to outweigh buyers in the months ahead.

It presents an interesting opportunity for June’s home buyers. Mortgage rates are still at their lowest levels of the year — despite expert predictions to the contrary — and homes remain affordable. Plus, in a lot of markets, home values have started to creep higher.

There’s good values and good rates but neither should last long. For the next few weeks, real estate may be in its 2010 sweet spot. 

If you were thinking of moving in September of this year or later, consider moving up your timeframe.