On average, listings lease in the $10's per square foot per year. The North Haven submarket is going through a a boost in rates. In the last 3 months, the median rate increased $18 per sqft per year.
In the last 90 days, 7 listings have come on the market, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 114% of the office spaces in the North Haven are subleases, so you might be able to snag a great spot on a short term. 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 2,110 sqft. Most buildings in this region are around 2 stories. Most buildings in this region were built in 1975 and are Class B.