Santa Rosa had the most foreclosure activity in Sonoma County in October, while Windsor, Cotati and Glen Ellen had the highest concentrations of new public filings for troubled home loans.
One in every 162 housing units in Windsor last month received a foreclosure filing — a notice of default, scheduled auction of bank repossesion, according to figures released Thursday from RealtyTrac.
Foreclosure filings amounted to one in every 164 homes in Cotati and one in 177 homes for Glen Ellen. The rates were one in 264 housing units  for Santa Rosa and one in 277 homes for the entire county.
Santa Rosa had 301 foreclosure filings in October, down from 332 in September. Windsor reported 54 such filings last month, down from 70 in September.

For California, RealtyTrac reported that foreclosure activity increased nearly 7 percent from September, but was still down almost 17 percent from a year earlier. One in every 243 homes in the state received a foreclosure filing last month.
For the U.S., that rate was one in every 563 housing units. Foreclosure filings increase 7 percent over September, but remained almost 31 percent lower than a year earlier.
For much of the past year, banks nationwide have slowed foreclosure activity due to accusations of improperly prepared paperwork, sometimes referred to as “robo-signing.”
The new numbers “continue to show strong signs that foreclosure activity is coming out of the rain delay we’ve been in for the past year,” said James Saccacio, chief executive officer of RealtyTrac. “However, recent state court rulings and new state laws keep changing the rules of the foreclosure game on the fly, creating more uncertainty in the housing market and threatening to prolong the road to a robust real estate recovery.”

— Robert Digitale