On average, listings lease in the $10's per square foot per year. The Saco region is going through a an increase in rates. In the last 3 months, the median rate went up $18 per sqft per year.
In the last 90 days, 2 listings have come on the market, which means leases might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 50% of the office spaces in the Saco are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 430 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1922 and are Class Class B.