The typical asking rate per listing is in the $30's per square foot per year. The Norwalk region is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decline in rent.
Compared to the rest of the Fairfield market, the Norwalk region has higher rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 66 listings have been posted online, so you'll want to check back regularly for new listings. About 5% of the available space in the Norwalk are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,000 sqft. Most properties in this area are around 3 floors. Most buildings in this region were built in 1983 and are Class B.