The house was listed on the National Register of Historic Places in 1985,[1] at which time it was still owned by Hill's descendants.

[3] The Hill–Lassonde House was located east of downtown Manchester, on the south side of Hanover Street opposite Bronstein Park.

The main facade was three bays wide, with a center entrance sheltered by a portico supported by fluted square columns and pilasters, with brackets also found in its roof eave.

A series of ells extended to the rear, and the property included a period carriage house with cupola.

Ownership by a single family contributed to its state of preservation relative to similar houses nearby, which were often demolished or extensively altered.