In the last 90 days, 23 listings have been made available, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 4% of the available space in the Burlington are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,460 sqft. Most properties in this area are around 3 floors. Most buildings in this region were built in 1870 and are Class A.