The typical asking rate per listing is in the $0's per square foot per year. The Grand Central submarket is going through a decline in rates. In the last 3 months, the median rate fell $18 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 0 listings have come on the market, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About NaN% of the listings in the Grand Central 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most properties in this area are around 1 stories.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Construction is the dominant industry in this market. Most of the folk of Grand Central work from home. Commuting close to 15 minutes a day is the norm for those who opt to reside in this part of town.