On average, listings lease in the $10's per square foot per year. The Tulsa County region is going through a a rise in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 4% increase in rent.
In the last 90 days, 207 listings have come on the market, so you'll want to check back regularly for new listings. About 4% of the office spaces in the Tulsa County are subleases, so you will probably have to focus your search on direct office leases. 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 1,750 sqft. Most buildings in this area are around 2 floors. Most buildings in this area were built in 1982 and are Class B.