On average, listings lease in the $10's per square foot per year. The Pompton Lakes region is seeing a a boost in rates. In the last 3 months, the median rate increased $16 per sqft per year.
In the last 90 days, 1 listings have been made available, which means leases are probably going fast. 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 800 sqft. Most buildings in this market were built in 1952 and are Class B.