Most listings are in the $50's per square foot per year. The Ridgewood region is going through a an increase in rates. In the last 3 months, the median rate went up $53 per sqft per year.
In the last 90 days, 7 listings have been made available, which means new availabilities might be going fast. You'll want to be prepared to make an offer immediately. About 114% of the office spaces in the Ridgewood 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,500 sqft. Most properties in this area are approximately 2 stories. Most buildings in this area were built in 1945 and are Class A.