Most listings are in the $0's per square foot per year. The Armonk region is experiencing a decrease in rates. In the last 3 months, the median rate fell $29 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 5 listings have been made available, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 40% of the office spaces in the Armonk are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most buildings in this market are approximately 25 stories. Most buildings in this market were built in 1974 and are Class A.