The typical asking rate per listing is in the $10's per square foot per year. The Newark region is experiencing a a rise in rates. In the last 3 months, the median rate increased $19 per sqft per year.
In the last 90 days, 2 listings have been posted online, which means new listings are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 200% of the available leases in the Newark 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 posted, so finding a space for a small business might be tough.
Even though the median size is 18,000 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are approximately 1 floors. Most buildings in this market were built in 1990 and are Class B.