This project served to increase the capacity of the existing Hogarth Primary School in Brentwood, Essex. It comprises a simple, detached building of 6 classrooms, studio hall, staff and group rooms and ancillary accommodation. The location of the new building and its resultant internal organization provided the narrative to treat the elevations in two distinct ways – solid, durable elevations to the northwest and southeast; permeable and transparent elevations to the northeast and southwest. On a constrained site, it was necessary to locate the new building immediately adjacent to the School’s main playground and close to a mature, planted boundary with dense foliage. School pupils already used the walls of existing buildings adjacent to the playground to play ball games - basketball, cricket or others. We took the decision to encourage this and imagined the playground surface wrapping’ up the adjacent, northwest elevation of the new building. We avoided fenestration here and inset 4 wall-ball courts into the wall. The opposing wall to the southeast, adjacent to the School’s existing habitat area, is similarly free of fenestration, but is instead ‘greened’ by a tensile cable system for the training of climbing plant species, planted in adjacent beds by the School’s pupils. Classrooms occupy parts of the parts of the building that face northeast and southwest, enjoying the preferred views across the School’s grassed informal and social areas. These facades relate to the ‘green’ context in both form and colour, with alternating vertical strips of glazing and and vibrant, but naturally toned cladding panels that can be glimpsed from inside the building as well as from the outside. Internally, classrooms are arranged on either side of a corridor of gently undulating width that serves to accommodate locker/ coat storage areas and signify classroom entrance locations. With a stepped roof profile, classrooms are day-lit and naturally ventilated from two sides. The response to the building has been overwhelmingly positive with occupants delighted by their new surroundings and outlook.