On average, listings lease in the $10's per square foot per year. The Shasta region is seeing a an increase in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 15% rise in rent.
In the last 90 days, 36 listings have come on the market, which means office spaces are probably 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 1,060 sqft. Most buildings in this market are around 2 stories. Most buildings in this region were built in 1989 and are Class B.