In the last 90 days, 3 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 133% of the available space in the Newton are subleases, so you might be able to snag a great spot on a short term. 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 region are around 1 floors. Most buildings in this area were built in 1951 and are Class B.