5-11, St Andrew Street

This is a terrace of four houses, now incorporating a shop, surgery, and flats, built in the early to mid-19th century in Hertford. The houses are constructed of grey-brown brick in a Flemish bond pattern, with stucco bands, sills, a moulded eaves fascia and cornice. The roofs are hipped and slate-covered, with four multi-flue brick chimneys featuring a band, oversailing course, and orange clay pots.

The facade presents nine bays with breaks and projections in a ratio of 1:1:2:1:2:1:1. The first floor has recessed 12-pane sash windows beneath rubbed flat arches with stucco sills in each bay, although the outer left and right bays have blank recesses. The second floor mirrors this with recessed 6-pane sashes and corresponding blank recesses. The ground floor features doorways in the end bays, each with four panels, two lower flush panels, a traceried semicircular fanlight, reeded surrounds, arched reveals, and painted stucco bands above. A similar arrangement exists for the doors to numbers 7 and 9, accessed from a central carriageway with a segmental rubbed brick arch and painted stucco impost bands. The remaining ground floor bays have 12-pane sashes, with number 11 having a 20th-century shop window within a 19th-century surround.

The rear elevation is characterised by five sash windows to the first and second floors, low segmental arches to the ground floor, and six scattered windows along with two doors serving numbers 5 and 7. Number 11 has a mid-19th century cast-iron railing and gates set on a Portland stone curb, featuring spear uprights, a trellis cross piece on the gate, and arrowheads below.

The upper floors have not been inspected, but the ground floors have been opened out and altered. A plaque commemorates Alfred Russell Wallace (1823-1913), a naturalist, author, and scientist, who resided at number 11. He was educated at Hertford Grammar School and spent time in the Amazon basin and South-East Asia. Wallace independently formulated the concept of "natural selection," influenced by but distinct from the work of Darwin and Huxley.