On average, listings lease in the $20's per square foot per year. The Monterey region is experiencing a a boost in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 10% increase in rent.
In the last 90 days, 34 listings have been made available, which means spaces are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the available space in the Monterey are subleases, so you will probably have to focus your search on direct office leases. 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 1,720 sqft. Most properties in this area are around 2 stories. Most buildings in this area were built in 1983 and are Class A.