On average, listings lease in the $20's per square foot per year. The Flagstaff region is going through a a boost in rates. In the last 3 months, the median rate went up $25 per sqft per year.
In the last 90 days, 9 listings have been listed, which means office spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 11% of the listings in the Flagstaff 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 available, so finding a space for a small business might be tough.
Even though the median size is 3,650 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this area were built in 1981 and are Class A.