On average, listings lease in the $20's per square foot per year. The Polk County submarket is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decline in rent.
In the last 90 days, 122 listings have been posted online, so you'll want to check back regularly for new listings. About 4% of the listings in the Polk County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,660 sqft. Most buildings in this area are approximately 1 stories. Most buildings in this market were built in 1972 and are Class B.