The typical asking rate per listing is in the $10's per square foot per year. The Fresno submarket is going through a an increase in rates. In the last 3 months, the median rate rose $20 per sqft per year.
Compared to the rest of the Fresno market, the Fresno submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 328 listings have been made available, so you'll want to check back regularly for new listings. About 18% of the listings in the Fresno are subleases, so you might be able to snag a great spot on a short term. 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 1,960 sqft. Most buildings in this area are approximately 1 stories. Most buildings in this market were built in 1982 and are Class B.