20 Main Street, Dewartown

Dated 1783, 20 Main Street, Dewartown is a single-story, five-bay, rectangular cottage built of random rubble sandstone with dressings set in cement. The northwest elevation, which is the principal facade, is asymmetrical. It features a boarded timber door in the penultimate bay to the right, with a tooled name panel breaking the eaves and reading "TIME COTTAGE 1783." The remaining bays have altered fenestration, with a small eight-pane window to the outer left. The northeast, southwest, and southeast elevations were not visible during an inspection in 1997, with the southwest side obscured by an adjoining cottage.

The cottage has predominantly twelve-pane timber sash and case windows with red tiled cills. The roof is red pantiled with a terracotta ridge, stone skews, and cast iron rainwater goods. It has a coped red brick gablehead stack shared with the adjacent cottage on the right, and a coped polished sandstone gablehead stack to the left, both topped with circular cans. The interior was not inspected in 1997.

According to the New Statistical Account, Dewartown was originally a linear village with plantations on the opposite side of the road, which have since been replaced with dwellings.