The Smith-Nettleton House, also called the Lindsley House, is a former residence at 424 Main Street in Watertown. Built c. 1850, it is transitional between the Greek Revival and Italianate styles. The house was acquired by the town in 1959 and is known as the Town Hall Annex.
As a special bonus, here are some additional houses in Watertown:
The Elizabeth M. Hotchkiss House (c. 1885), 92-94 North Street, a cross-gable Queen Anne house:
The John Bronson House (c. 1885), 87 North Street, a vernacular house with some Queen Anne Victorian elements:
The Charles Smith House (1920), 37 Warren Way, a Dutch Colonial Revival house
Smith-Nettleton House (1850)