The Federal farmhouse was built for tanner William Clapp and his wife Elizabeth Humphreys in 1806. The family farm evolved into a commercial orchard and dairy beginning in the 1830s. New England dairy products, especially butter, were highly prized. Wives, daughters, and hired dairy maids milked the cows, churned the butter, and helped make cheese. Since 1945, Clapp Farm has been the site of the Dorchester Historical Society.