The typical asking rate per listing is in the $20's per square foot per year. The Brookside region is going through a a boost in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 10% rise in rent.
In the last 90 days, 13 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 31% of the available leases in the Brookside 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 4,000 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are approximately 3 floors. Most buildings in this region were built in 1998 and are Class A.