5, 6 And 7, Russell Place

5, 6, and 7 Russell Place is a former gatehouse of Devonport Prison, built in 1849. The building is constructed from Plymouth limestone rubble with lighter limestone dressings and features steep dry slate roofs, an embattled tower with machicolations, and an octagonal corner turret. It has stone axial and lateral stacks with tall brick shafts that have oversailing courses.

The overall plan is long and irregular, shaped like an E, with cross wings at the front. The building is designed in a domestic Gothic style and has two storeys, with the first floor partly in the roof space. The front is irregularly gabled and includes stone mullioned windows, with principal windows featuring trefoil-headed lights and others with round-arched lights.

Key features of the front include, from the left, a three-light window on the ground floor, a two-storey porch, and a wider attached wing. There is a symmetrical three-bay arrangement with a central three-storey tower, followed by another cross wing, and an irregular grouping of openings that includes a doorway on the right and an unequal pair of linked cross wings at the far right. The three principal cross wings each have three or four lights above a ground-floor canted window with a hipped roof. The next cross wing to the far right has two lights over three lights, while the bays flanking the tower have two lights over four lights. The tower features paired lights in the upper stage, a string course, and a hipped canted ground-floor projection, along with other paired or single lights and squat two-centred arched doorways.

The interior has not been inspected, but the building is noted as a fine example of a restrained Gothic style.