Smelt House is a Gothic Victorian Grade II Listed House situated in Crook, Durham. The house was built in 1846 and sits within mature gardens of 2.5 acres.

HL was appointed to develop a scheme that included internal alterations, restoration of the east elevation as well as a modern contemporary glazed extension. The works to the east elevation included re-introducing windows into the existing bricked-up arches. The modern glazed extension, connected via a glazed link, sympathetically links the old and the new and creates a modern lightweight space, contrasting the robust nature of the original building.