The typical asking rate per listing is in the $30's per square foot per year. The White Plains region is going through a decline in rates. In the last 3 months, the median rate fell $11 per sqft per year. That's a 26% decline in rent.
In the last 90 days, 34 listings have been made available, which means leases might be going fast. You'll want to be prepared to make an offer immediately. About 6% of the listings in the White Plains are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 3,330 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this area are around 5 stories. Most buildings in this market were built in 1977 and are Class A.