Quadrant House: A mixed-use office building situated in Caterham town centre acquired by Tandridge Council in order to preserve space for local businesses, supporting local economic growth and achieving a sustainable refurbishment. 

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The external green wall along the main elevation has become a bold centrepiece of the high street, enhancing bio-diversity and improving air quality. The wall is irrigated using harvested rainwater off of the main roof. 

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In order to improve accessibility larger lifts and escape stairs were installed. 

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Phase 1 of the project comprised the refurbishment of communal areas including new toilets and showers. 

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As additional funding became available, Phase 2 embarked on the thermal improvements to the building including new windows and doors as well as the refurbishment of unoccupied office suites, terraces and the green wall. 

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The project has provided attractive and affordable workspaces for local businesses, new communal areas and an improved appearance for the retail units at ground level. 

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The design also enhances the environmental performance of the building. BTP worked closely with Erect Architecture in order to implement best practice retrofit measures. The transition to all-electric heating and cooling will be aided by on-site electricity generation. 

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Team:

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Architect: Erect Architecture

PM & Cost Consultant: Huntly Cartwright

M&E & Sustainability: BTP Consultants

Structural: Structures Lab

Main Contractor: Thomas Sinden Limited

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Awards:

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Shortlisted, AJ retrofit & Reuse Awards, Decarbonisation & Net Zero 2024

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