The typical asking rate per listing is in the $20's per square foot per year. The Muttontown submarket is experiencing a a boost in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 15% increase in rent.
In the last 90 days, 6 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 6,450 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this area are approximately 2 floors.