On average, listings lease in the $20's per square foot per year. The Santa Rosa region is experiencing a a boost in rates. In the last 3 months, the median rate increased $27 per sqft per year.
Compared to the rest of the Bay Area market, the Santa Rosa submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 36 listings have been made available, which means new listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 164% of the office spaces in the Santa Rosa are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,420 sqft. Most properties in this market are close to 2 floors. Most buildings in this market were built in 1982 and are Class B.