15 Middle St UNIT 409, Portland, ME is a condo home that contains 872 sq ft and was built in 2013. It contains 1 bedroom and 1 bathroom. This home last sold for $365,000 in February 2017. The Zestimate for this house is $400,356, which has increased by $421 in the last 30 days. The Rent Zestimate for this home is $2,100/mo, which has increased by $100/mo in the last 30 days. The property tax in 2017 was $5,274. The tax assessment in 2017 was $243,600.