Most listings are in the $20's per square foot per year. The New Haven County region is going through a decrease in rates. In the last 3 months, the median rate fell $5 per sqft per year. That's a 18% decrease in rent.
In the last 90 days, 365 listings have been made available, so you'll want to check back regularly for new listings. About 0% of the available leases in the New Haven County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,930 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this market were built in 1979 and are Class A.