The typical asking rate per listing is in the $20's per square foot per year. The Grass Valley region is seeing a a boost in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 17% rise in rent.
Compared to the rest of the Greater Sacramento market, the Grass Valley region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 9 listings have come on the market, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,050 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this region were built in 1990 and are Class A.