Heritage-Sensitive Phased Refurbishment and New Boarding Accommodation

Phase 1 involved the restoration and refurbishment of the Butterfield Building and Master’s House to create boarding accommodation for 30 pupils, including a common room, quiet study area, and kitchen. Phase 2 introduced a new building for older pupils, achieving a BREEAM 'Very Good' rating.

Located near Canterbury Cathedral, a Scheduled Ancient Monument, the Grade II-listed Butterfield Building, designed by William Butterfield in 1847, was sensitively upgraded and connected to a new boarding house for girls. The project was successfully executed on a rapid timeline, with the facilities required to be operational by the start of the academic year.

The refurbishment included new glazing and insulation to meet modern thermal standards, while the new building featured windows designed to optimise daylight and natural ventilation while minimising heat loss. The structure uses a recyclable steel frame combined with precast concrete planks and a concrete screed to balance thermal mass and lightweight construction, enhancing thermal capacity and reducing overheating.

Drainage was upgraded to HDPE, a more environmentally friendly option compared to PVC or cast iron.

Inefficient heating and lighting systems in the listed building were replaced, significantly reducing carbon emissions, while low-energy systems were implemented in the new building. LED lighting with 'absence control' was installed throughout to ensure lights automatically turn off when not in use. The heating system features automatic central controls, allowing sections of heating and hot water to be turned off when students are absent, while maintaining warmth in staff areas.

Kingsdown House blends modern functionality with heritage sensitivity. The project achieved a BREEAM 'Very Good' environmental rating, all while avoiding intrusive 'green' add-ons that could compromise its historic character.

Awards

2018 Civic Trust Awards – commendation
2017 RIBA South East Awards – shortlisted
2018 Canterbury Society Design Awards: New Building in a Conservation Area
2018 Canterbury Society Design Awards: Refurbishment
2018 Canterbury Society Design Awards: Overall Winner