Most listings are in the $40's per square foot per year. The Iselin region is going through a an increase in rates. In the last 3 months, the median rate increased $46 per sqft per year.
In the last 90 days, 26 listings have been listed, which means leases might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 8% of the available leases in the Iselin are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 24,440 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this region are close to 5 floors. Most buildings in this market were built in 1986 and are Class A.