The Griswold House is a historic house at 171 Boston Street in Guilford, Connecticut. It is a 2-1/2 story wood frame structure, three bays wide, with a large central chimney. A leanto section to the rear gives the house a classic New England saltbox appearance. The house was probably built in the first or second decade of the 18th century by Thomas Griswold, a local blacksmith. It remained in the hands of his descendants until 1958, when it was acquired by the Guilford Keeping Society. It was added to the National Register of Historic Places in 1975.[1]