Most listings are in the $30's per square foot per year. The Essex County submarket is going through a a rise in rates. In the last 3 months, the median rate increased $7 per sqft per year. That's a 25% increase in rent.
In the last 90 days, 24 listings have come on the market, which means new availabilities might be leasing quickly. You'll want to be prepared to make an offer immediately. About 4% of the available leases in the Essex County are subleases, so you will probably have to consider a longer term 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 2,800 sqft, there are still 0 leases below 2,000 sqft. Most properties in this region are close to 2 floors. Most buildings in this area were built in 1969 and are Class B.