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 undervalued region.
In the last 90 days, 36 listings have been listed, which means office spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 161% of the listings in the Santa Rosa are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,120 sqft. Most buildings in this region are around 2 floors. Most buildings in this area were built in 1982 and are Class B.