42, St John’s Street
Encon Associates is proud to support the transformation of 42 St John’s Street, a modern office refurbishment designed with sustainability, longevity, and user well-being at its core. Located in the historic heart of Clerkenwell.

A Thoughtful, Low-Carbon Refurbishment in the Heart of London.
Set against the monastic backdrop of Clerkenwell, the redevelopment of 42 St John’s Street breathes new life into a distinctive office building. With a design ethos built around the idea of “long-life, loose fit” workspaces, the refurbishment focuses on minimising energy use, reducing carbon emissions, and enhancing internal comfort.
This multi-tenant space now benefits from significant fabric upgrades, improved daylight, and modern exposed features like ribbed slab ceilings and polished concrete columns, all contributing to a more inspiring, efficient, and environmentally conscious workplace.
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Client Kiani Architects
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Location Clerkenwell, London
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Period 2022-2024
Our Involvement
Encon Associates was appointed to deliver a comprehensive package of sustainability services to help realise the environmental ambitions of the client and design team. Our input helped drive the project to meet key environmental and wellbeing performance targets.
The project aims to achieve an Excellent BREEAM rating.
Images credits: Filippo Bolgnese

The design team has been committed to providing a high-end quality standard building, from the Design Stage to Post-Construction, with attention to their end-users’ Health & Well-being and Accessibility as a top priority.”
— Beatryz Budacs, BREEAM Assessor, Encon Associates

Want to gain environmental credits or need planning advice for your next project?
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We have chosen Encon Associates to provide us with landscape schemes for a few of our developments. They were able to provide us with a quick turnaround to meet with our program. Encon have remained professional throughout and a pleasure to work with. We would gladly recommend their services.