M333 Additions and alterations to 78 Derngate, Northampton

In 1916–17 this early 19th-century terraced house was significantly altered for W. J. Bassett-Lowke. A strikingly plain extension incorporating balconies was built at the rear, a bay window was added at the front, and the stairs were reorientated to run parallel with the street.

Authorship: Mackintosh designed extraordinary interiors and furniture for the house, but there are no drawings or other evidence to show that he was involved in the structural alterations. These appear to have been designed by Bassett-Lowke himself, in association with the architect Alexander Ellis Anderson and with input from staff at the Bassett-Lowke office.