On average, listings lease in the $10's per square foot per year. The Lafayette submarket is going through a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 7% decrease in rent.
In the last 90 days, 12 listings have been posted online, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 33% of the available space in the Lafayette 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 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 1,820 sqft. Most properties in this area are close to 2 stories. Most buildings in this market were built in 2001 and are Class B.