On average, listings lease in the $50's per square foot per year. The Oradell region is experiencing a an increase in rates. In the last 3 months, the median rate rose $32 per sqft per year. That's a 150% increase in rent.
In the last 90 days, 3 listings have been posted online, which means leases 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 600 sqft. Most properties in this market are close to 3 stories. Most buildings in this area were built in 1979 and are Class C.