Most listings are in the $30's per square foot per year. The Oradell region is going through a decline in rates. In the last 3 months, the median rate fell $15 per sqft per year. That's a 31% decrease in rent.
In the last 90 days, 5 listings have been made available, which means leases are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 20% of the office spaces in the Oradell 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,900 sqft. Most buildings in this region are close to 3 stories. Most buildings in this area were built in 1979 and are Class C.