Several Jamaica Plain buildings made the list. Mind you that Jamaica Plain was annexed by Boston in 1874, so these buildings predate JP being part of Boston.
The oldest house in Jamaica Plain appears to be Linden Hall - the Rev. John Troutbeck House at 26-28 Grovenor Road, was built in 1755. It is the 20th oldest building in all of Boston.
The Loring-Greenough House at 12 South St., is the 21st oldest building in Boston, second oldest in Jamaica Plain and was built in 1760.
The John Morey House at 1085 Centre St., built in 1796, is the the 50th oldest building in Boston, and the third oldest in JP.
The J. Curtis House at 480 Centre St., built in 1803, is the 83rd oldest building in Boston, and the fourth oldest in Jamaica Plain.