21, Great Avenham Street

21 Great Avenham Street is a small town house built around 1825, with some alterations. It is constructed of red brick in a 4+1 English garden wall bond, which has been painted red, and features sandstone dressings and a slate roof. The house has a double-depth single-fronted plan, with a back extension and a through-lobby. It stands two storeys high over cellars and has two bays, characterized by a plain frieze and a moulded gutter cornice.

The doorway, located to the left, features a round-headed architrave with set-in Tuscan quarter-columns, a plain lintel, and a semi-circular fanlight with a hollow-moulded surround and radiating glazing bars. To the left of this doorway is another lobby doorway with a plain lintel and a board door. There is one window at the ground floor and two above, all of which are 4-pane sashes with raised sills and wedge lintels; the cellar window also has a wedge lintel and grating. A lead downspout is positioned to the right of the door. The rear and interior of the house have not been inspected. This house is part of a formerly complete set of late Georgian lower-middle class houses on this street, which was laid out in Great Avenham Field and advertised for sale as building plots in 1825.