Most listings are in the $20's per square foot per year. The Fresno region is going through a an increase in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 4% rise in rent.
Compared to the rest of the Fresno market, the Fresno region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 666 listings have been posted online, so you'll want to check back regularly for new listings. About 0% of the listings in the Fresno are subleases, so you will probably have to consider a longer term lease. 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 2,340 sqft. Most properties in this region are close to 1 floors. Most buildings in this market were built in 1981 and are Class B.