After inching up the first half of the year, single-family home prices across the Santa Clarita Valley fell in July to their fourth-lowest level in nine years and condominium prices hit a 10-year low.

July’s median single-family home price was $350,000, according to data from the Southland Regional Association of Realtors. That’s off $10,000 from June and $20,000 from July 2011.

Since March 2003, only the months of January, November and December of 2011 have seen a lower median price. The height of the boom for single-family homes came in April 2006 when the median price was $643,000.

Condominium prices have lost more than half of their value since January 2006, when the median price reached $397,000. July’s median price was $170,000, down $25,000 from June and $47,500 from July 2011. It’s the lowest level since February 2002.

More houses and condos changed hands in July 2012 than in July 2011, but July sales were down from June 2012.

“It’s amazing that the month ended with sales higher than a year ago because, frankly, there are very few properties out there for people to buy,” SRAR’s Erika Kauzlarich-Bird said in a statement. “The inventory is tumbling. There are plenty of buyers, yet not much for them to mull over.”

The high number of short sales – where banks accept offers less for than the outstanding loan balance – are dragging down median prices, she said.

The Realtor group said there were just 470 active listings in the SCV, representing a 1.7-month supply of homes for sale. That compares to 1,148 listings (a 4.4-month supply) in July 2011. A five- to six-month supply is considered healthy.