Compared to the rest of the Greater Boston market, the Newton submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 27 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 15% of the office spaces in the Newton are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,800 sqft. Most properties in this area are close to 3 stories. Most buildings in this region were built in 1973 and are Class A.