On average, listings lease in the $20's per square foot per year. The Windsor submarket is seeing a a rise in rates. In the last 3 months, the median rate rose $23 per sqft per year.
Compared to the rest of the Bay Area market, the Windsor submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 3 listings have been made available, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. About 167% of the listings in the Windsor 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 760 sqft. Most properties in this region are close to 2 stories. Most buildings in this region were built in 2002 and are Class B.