Compared to the rest of the Greater Boston market, the Chelsea submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 8 listings have been posted online, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,570 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this area are close to 2 stories. Most buildings in this region were built in 2001 and are Class B.