On average, listings lease in the $10's per square foot per year. The Grass Valley region is going through a decline in rates. In the last 3 months, the median rate fell $6 per sqft per year. That's a 27% decline in rent.
Compared to the rest of the Greater Sacramento market, the Grass Valley region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 13 listings have been listed, which means new listings are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,440 sqft. Most properties in this region are around 2 floors. Most buildings in this region were built in 1989 and are Class A.