On average, listings lease in the $20's per square foot per year. The Louisville/Jefferson County metro government (balance) submarket is experiencing a a boost in rates. In the last 3 months, the median rate rose $6 per sqft per year. That's a 32% increase in rent.
In the last 90 days, 30 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 130% of the listings in the Louisville/Jefferson County metro government (balance) 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.
Even though the median size is 5,000 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this region are around 1 floors. Most buildings in this region were built in 1956 and are Class A.