How many square feet does 140 West 31st Street, New York, NY 10001 have? This Office with Commercial - 1 to 6 Stories (O5) located at 140 West 31st Street, New York, NY 10001 has a total of 17,923 square feet. What is the year built & the current market value of 140 West 31st Street, New York, NY 10001? 140 West 31st Street, New York, NY 10001 was built in 1926 and has a current tax assessor's market value of $3,019,000. How many commercial spaces does this building have? This building has 5 commercial spaces available for lease.