On average, listings lease in the $40's per square foot per year. The Arnold region is experiencing a a boost in rates. In the last 3 months, the median rate rose $47 per sqft per year.
In the last 90 days, 4 listings have come on the market, which means leases might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 200% of the available space in the Arnold are subleases, so you might be able to sign a shorter term by taking over a previous 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 1,010 sqft. Most properties in this area are close to 1 stories. Most buildings in this area were built in 1999 and are Class A.