77 Coleman Street Moorgate, London

77 Coleman Street is a major mixed-use retrofit and extension project in the City of London, spanning Moorgate and Coleman Street. The development delivers an office-led scheme with significant retail and leisure space at lower levels, alongside a new public route through the site, Nun Court, improving pedestrian connectivity between Coleman Street and Moorgate.

The project involved the comprehensive remodelling of an existing concrete-framed building, with a strong sustainability focus through the retention and re-use of the existing structure. The result is a modern, long-life commercial building that combines high-quality architecture with an enhanced public realm.

Putney & Wood were engaged to deliver specialist natural stone façade works to the external envelope. The building presents two distinct elevations, requiring careful coordination and detailing: a Moorgate-facing façade with a gridded, high-quality limestone finish (Portuguese Moleanos limestone, similar in appearance to Portland stone), and a contrasting Coleman Street façade arranged in horizontal bands of limestone and dark brick. The stonework demanded accurate setting-out, consistent jointing, and a high standard of finishing to achieve a clean, contemporary façade while respecting the complexity of the retained structure and new interventions.