Cobbs Hall is a historic plantation house located at Kilmarnock, Northumberland County, Virginia. It was built in 1853, on the foundations of an earlier dwelling of the same design. It is a two-story, five-bay, double pile brick dwelling with a gable roof. The front and rear facades feature similar porches supported by Tuscan order columns. The ends have two semi-exterior end chimneys flanking the peak of the gable. Also on the property are the contributing Cobbs Hall graveyard containing Lee family remains, the remains of a 1 1/2-story brick dwelling, and a brick meat house. Cobbs Hail is one of the noted Northern Neck plantations associated with the Lee family of Virginia since the middle of the 17th century.