Most listings are in the $20's per square foot per year. The Clifton submarket is seeing a decrease in rates. In the last 3 months, the median rate fell $9 per sqft per year. That's a 27% decline in rent.
In the last 90 days, 1 listings have come on the market, which means leases might be going fast. You'll want to be prepared to make an offer immediately. About 100% of the listings in the Clifton 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 750 sqft. Most properties in this market are around 2 stories. Most buildings in this area were built in 1970 and are Class B.