On average, listings lease in the $50's per square foot per year. The Cambridge submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 3% increase in rent.
Compared to the rest of the Greater Boston market, the Cambridge submarket has more expensive rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 32 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 9% of the office spaces in the Cambridge 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 1,910 sqft. Most buildings in this market are close to 5 floors. Most buildings in this area were built in 1970 and are Class A.