Most listings are in the $10's per square foot per year. The Lawrence region is going through a an increase in rates. In the last 3 months, the median rate went up $18 per sqft per year.
In the last 90 days, 20 listings have been listed, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 25% of the listings in the Lawrence 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 5,000 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this market are around 1 stories. Most buildings in this region were built in 1928 and are Class B.