The typical asking rate per listing is in the $10's per square foot per year. The Salinas submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 5% increase in rent.
In the last 90 days, 6 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 33% of the available leases in the Salinas are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,100 sqft. Most properties in this region are close to 2 stories. Most buildings in this area were built in 1986 and are Class B.