The typical asking rate per listing is in the $20's per square foot per year. The Fresno submarket is going through a a rise in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 4% rise in rent.
Compared to the rest of the Fresno market, the Fresno region has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 558 listings have been made available, so you'll want to check back regularly for new listings. About 0% of the available space in the Fresno are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,310 sqft. Most properties in this area are around 1 floors. Most buildings in this market were built in 1981 and are Class B.