Most listings are in the $10's per square foot per year. The Lowell region is seeing a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decline in rent.
Compared to the rest of the Greater Boston market, the Lowell submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 61 listings have been posted online, so you'll want to check back regularly for new listings. 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 1,630 sqft. Most properties in this market are approximately 4 floors. Most buildings in this market were built in 1983 and are Class B.