Thetford Grammar School Library and Attached Former Stable

The Thetford Grammar School Library and attached former stable is a building that dates back to 1575, originally serving as a school house until 1881. It underwent reworking in the early 19th century and was rebuilt in 1877. The structure is made of cut flint with red brick and ashlar dressings, topped with machine tile roofs and features an L-shaped plan.

The east front showcases a gabled porch that includes a piece of re-used 12th-century stone decoration in the gable, supported by diagonal buttresses. Flanking the porch are two 4-light mullioned windows. The building has a gabled roof with a fleche and a large 4-light window with a transom on the south side. To the right, there is a twin-gabled wing with gables of different sizes, which are lit by 2-light mullioned windows and a 3-light cross casement. The roof features two triple-flued stacks with star tops.

Inside, there is a stone dogleg staircase leading to the first floor. The main ground-floor library is divided by a mid-14th-century stone arch, which represents the south crossing tower arch of the Dominican church, although it may not be in its original position. The arch features wave-moulding and 2-centred polygonal capitals.

Attached to the north-east corner is a polygonal former stable, built in the early 19th century from brick and consisting of two storeys. It has round-arched openings on the ground floor, with either windows or blank frames above.