Most listings are in the $10's per square foot per year. The Carmichael region is experiencing a decrease in rates. In the last 3 months, the median rate decreased $13 per sqft per year. That's a 42% decline in rent.
Compared to the rest of the Greater Sacramento market, the Carmichael submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 11 listings have come on the market, which means listings 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,510 sqft. Most properties in this area are around 1 floors. Most buildings in this area were built in 1986 and are Class C.