On average, listings lease in the $30's per square foot per year. The Westchester region is going through a a boost in rates. In the last 3 months, the median rate increased $6 per sqft per year. That's a 16% rise in rent.
In the last 90 days, 40 listings have been posted online, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 10% of the office spaces in the Westchester are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,650 sqft. Most properties in this market are approximately 5 stories. Most buildings in this region were built in 1973 and are Class A.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Public administration is the dominant industry in this region. Commute by taxi is the most popular way to get to work amongst Westchester occupants. Commuting close to 30 minutes a day is the norm for those who opt to reside in this part of town.