On average, listings lease in the $70's per square foot per year. The Downtown Greenwich submarket is going through a a boost in rates. In the last 3 months, the median rate rose $29 per sqft per year. That's a 59% increase in rent.
Compared to the rest of the Fairfield market, the Downtown Greenwich submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 13 listings have been posted online, which means new listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 15% of the available leases in the Downtown Greenwich are subleases, so you might be able to find a shorter term or below market rent. 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 1,850 sqft. Most buildings in this area are around 4 floors. Most buildings in this region were built in 1970 and are Class A.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Manufacturing is the dominant industry in this region. Most of the folk of Downtown Greenwich work from home. Commuting approximately an hour a day is the norm for those who opt to reside in this part of town.