Most listings are in the $20's per square foot per year. The Malden submarket is going through a a rise in rates. In the last 3 months, the median rate went up $29 per sqft per year.
Compared to the rest of the Greater Boston market, the Malden region has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 19 listings have come on the market, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 750 sqft. Most buildings in this market are approximately 4 stories. Most buildings in this region were built in 1920 and are Class B.