317 Valley St, Portland, ME is a multi family home that contains 4,392 sq ft and was built in 1911. It contains 13 bedrooms and 4 bathrooms. This home last sold for $450,000 in May 2016. The Zestimate for this house is $552,500, which has increased by $285 in the last 30 days. The Rent Zestimate for this home is $1,800/mo, which has increased by $4/mo in the last 30 days. The property tax in 2017 was $7,196. The tax assessment in 2017 was $332,400.