On average, listings lease in the $10's per square foot per year. The Lexington region is seeing a a rise in rates. In the last 3 months, the median rate increased $16 per sqft per year.
In the last 90 days, 2 listings have been made available, which means leases most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 400% of the office spaces in the Lexington are subleases, so you might be able to find a shorter term or below market rent. 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 1,600 sqft. Most buildings in this area are around 1 stories. Most buildings in this region were built in 2000 and are Class B.