[1] The Rundlet-May House stands in what is now a predominantly residential area south of downtown Portsmouth, on the west side of Middle Street, a busy north–south road.

It is a three-story wood-frame structure, topped by a low-pitch hip roof surrounded by a wooden balustrade.

Its main facade is five bays wide, with a center entrance framed by sidelights and a fanlight.

Rundlet imported his wallpapers from England and purchased his furniture from local cabinetmakers, whose work was noted for its fine craftsmanship and striking use of veneer.

The formal gardens, orchard, and attached outbuildings (including two privies) remain as first used by Rundlet, and there is also a small pet cemetery on the grounds.