The typical asking rate per listing is in the $20's per square foot per year. The Tulsa region is experiencing a a rise in rates. In the last 3 months, the median rate increased $8 per sqft per year. That's a 48% rise in rent.
In the last 90 days, 55 listings have been made available, so you'll want to check back regularly for new listings. About 5% of the listings in the Tulsa are subleases, so you will probably have to consider a longer term lease. 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 2,090 sqft. Most buildings in this region are around 2 floors. Most buildings in this region were built in 1982 and are Class B.