631 Prospect Mountain Rd, Alton, NH is a single family home that contains 2,030 sq ft and was built in 2006. It contains 2 bedrooms and 2 bathrooms. This home last sold for $235,000 in January 2016. The Zestimate for this house is $302,996, which has increased by $26,843 in the last 30 days. The Rent Zestimate for this home is $1,800/mo, which has decreased by $58/mo in the last 30 days. The property tax in 2017 was $3,949. The tax assessment in 2017 was $307,100, an increase of 13.7% over the previous year.