The typical asking rate per listing is in the $20's per square foot per year. The Wilton Center submarket is going through a a rise in rates. In the last 3 months, the median rate went up $24 per sqft per year.
Compared to the rest of the Fairfield market, the Wilton Center submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 3 listings have been listed, which means listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,320 sqft. Most properties in this region are close to 3 stories. Most buildings in this market were built in 1979 and are Class A.