18 (Waterside) and 19 St John's Terrace and garden wall to south

Nos 18 (Waterside) and 19 St John's Terrace, along with the garden wall to the south, are a pair of mid-19th century houses located in Devoran, Feock. The buildings are constructed of Killas stone, with No 18 being rendered and painted around 1970. They feature hipped roofs covered in asbestos slate, with brick chimneys on the side walls and over the party wall.

Each house has a two-room layout, with a wing at right angles to the rear of No 18 and a parallel hipped-roofed block to the rear of No 19. Both houses are two storeys tall and face south. Each has a two-window front. No 18, on the left, features canted bay windows from around 1900 with horned sashes and arched lights, along with similar four-pane sashes on the first floor. There is a side entrance on the west wall with a 20th-century glazed porch. No 19 has two-pane horned sashes and a full-width arcaded verandah from around 1900, which has a glass roof supported by open decorated piers and spandrels with trellised sides. It also has an entrance on the west side wall leading to an early 20th-century conservatory with a polygonal roof and horned sashes. Both houses have cast iron ogee gutters.

The front garden features a low granite coped wall. No 18 has a stop-chamfered cross-braced gate and square granite monolith piers with ogee-shaped pyramidal caps. No 19 has a rail and rectangular baluster fence with a cross-braced gate between square granite monolith piers topped with ball finials.

These houses are part of a row of similar contemporary buildings in St John's Terrace, creating an impressive group despite some later alterations to individual houses.