This single-family home is located at 15-1856 31st Ave, Keaau, HI. 15-1856 31st Ave is in Keaau, HI and in ZIP code 96749. This property has 3 bedrooms, 2 bathrooms and approximately 1,150 sqft of floor space. The last sold price per dimension was $235/sqft. This property has a lot size of 1.00 acres and was built in 1971.