The Isaac Hobbs House stands in suburban northeastern Weston, just north of the junction of North Avenue (Massachusetts Route 117) with Church Street in the town's Kendal Green area. It is a 2+1⁄2-story wood-frame structure, with a gabled roof and clapboarded exterior. It is oriented facing west, and is screened from the road by a fence, although it is located close to the road. The main facade is five bays wide, with a center entrance and a cross gable above the center three bays. A two-story ell extends to the left side, and a small single-story ell projects to the right.[2]
The oldest portion of this house was built about 1749, probably by Ebenezer Hobbs, whose family had acquired the land for it in 1729. Ebenezer's son Isaac was a town selectman, representative in the state legislature, and a member of the Massachusetts militia who saw action in the Battle of Bunker Hill. A later descendant who owned the house was J.F. Baldwin Marshall, paymaster general to the Massachusetts troops in the American Civil War. The family also operated a tannery adjacent to the house, which was a significant business in the town until its closure in 1860, and is now town conservation land.[2]