On a recent Friday night, the Century 21 Classic Properties office in Rohnert Park was bustling with agents working late to write offers and show clients properties.
A few years ago, business was "a lot slower," said Pat Miller, a broker associate at the office. But times have changed, even in January, often the doldrums for home sales.
"We're still screaming busy," Miller said.
In 2011's bumpy real estate market, Rohnert Park and neighboring Cotati saw their biggest home sale numbers in five years. Single-family sales rose 21 percent last year, while condominium sales jumped 26 percent, according to the Press Democrat's monthly housing report compiled by Pacific Union International Vice President Rick Laws.
Other communities with their best sales years in a half-decade include Windsor, Healdsburg, Sonoma, west Petaluma and the Sonoma Coast.
Across Sonoma County, home sales rose 7 percent last year as buyers purchased 4,637 homes, the second-best year since 2005. The year's median price fell 8 percent to $325,000, the lowest since 2000 when not adjusted for inflation.
Some communities turned in stronger performances, while others lagged behind.
In Santa Rosa — the county's single biggest real estate market — sales rose 5 percent last year but the median price fell 9 percent to $295,000.
In Rohnert Park and Cotati, agents and brokers suggested the jump in sales last year came from both an uptick in buyer confidence and a continued drop in prices. The lower prices at times were exacerbated by an abundance of foreclosures and short sales, where the home is sold for less than the amount owed on the mortgage.
In 2011, the median price for a single-family home in the two cities fell 11 percent to $285,000. That amounted to half the median price in 2005 of $565,000.