Most listings are in the $20's per square foot per year. The Armonk region is going through a an increase in rates. In the last 3 months, the median rate increased $29 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 6 listings have come on the market, 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 available, so finding a space for a small business might be tough.
Even though the median size is 2,600 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this area are approximately 25 stories. Most buildings in this region were built in 1983 and are Class A.