31 Warren Ave, Portland, ME is a multi family home that contains 2,368 sq ft and was built in 1930. It contains 0 bedroom and 3 bathrooms. This home last sold for $288,500 in May 2017. The Zestimate for this house is $327,624, which has decreased by $4,168 in the last 30 days. The Rent Zestimate for this home is $1,700/mo, which has increased by $64/mo in the last 30 days. The property tax in 2017 was $5,778. The tax assessment in 2017 was $266,900, an increase of 11.0% over the previous year.