Most listings are in the $20's per square foot per year. The Elizabeth region is going through a decline in rates. In the last 3 months, the median rate fell $10 per sqft per year. That's a 28% decrease in rent.
In the last 90 days, 8 listings have been listed, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 25% of the available leases in the Elizabeth are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 7,700 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are around 3 stories. Most buildings in this region were built in 1982 and are Class B.