The typical asking rate per listing is in the $10's per square foot per year. The Long Hill region is seeing a decline in rates. In the last 3 months, the median rate decreased $26 per sqft per year. That's a 62% decline in rent.
In the last 90 days, 5 listings have been made available, which means spaces 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,300 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this area were built in 1987 and are Class A.