4 and 6, Rotherwick Road

4 and 6 Rotherwick Road are a pair of houses designed in 1909 by the Letchworth office of Barry Parker and Raymond Unwin. The design is based on a double-ended hall house and features red brick in Flemish bond with black brick headers creating a diaper pattern. The houses have tile-hung half dormers and tile kneelers on the gables, with roofs covered in tiles and swept eaves that reveal exposed rafter ends.

These two-storey houses have a two-window range for the hall and one window for each cross wing, showcasing a vernacular revival style. The entrances are located in the outer corners of the hall range, each sheltered by an angled porch, with a pair of segmental windows between them. All ground floor and first-floor crosswing windows are segmental, while the remaining openings on the front elevation feature flat arches. The windows are fitted with leaded casement lights of an original design.

There are two gable-facing half dormers on the hall wing and another of similar design on the inside return of each crosswing. The houses have an axial ridge stack on the party wall, an external stack on the outside returns, and an axial stack on the rear slope of No. 4's roof. The doors also retain their original design. These houses form a group with other designs by Parker and Unwin, including Nos. 1 and 3, 5 and 7 (odd), 2, 4 and 6, and 8 and 10 (even) on Rotherwick Road.