Most listings are in the $20's per square foot per year. The Lynn submarket is going through a an increase in rates. In the last 3 months, the median rate rose $21 per sqft per year.
Compared to the rest of the Greater Boston market, the Lynn submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 8 listings have been made available, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 25% of the office spaces in the Lynn 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 available, so finding a space for a small business might be tough.
Even though the median size is 4,840 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are around 5 floors. Most buildings in this region were built in 1968 and are Class B.