The typical asking rate per listing is in the $30's per square foot per year. The Yonkers submarket is going through a an increase in rates. In the last 3 months, the median rate rose $7 per sqft per year. That's a 23% rise in rent.
In the last 90 days, 7 listings have been listed, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 214% of the office spaces in the Yonkers are subleases, so you might be able to find a shorter term or below market rent. 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 10,000 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 2 floors. Most buildings in this area were built in 1987 and are Class A.