One Coleman Street

Background

Following a competitive two stage tender process Union Investments appointed Quadrant as Development Manager to bring forward the repositioning of the iconic 1 Coleman Street. The building has been home to Legal & General for over 20 years.

The proposals will transform 1 Coleman Street into a best-in-class workspace designed for modern businesses.

By reconfiguring the building’s internal layout, maximising the envelope and improving facilities, the scheme would deliver flexible, high-quality office space capable of supporting a wide range of occupiers, including potential international headquarters.

Modern workplaces require exacting standards of comfort, sustainability and wellbeing. The upgraded building is intended to attract long-term occupiers while supporting the City of London’s role as a global centre for business and innovation.

Where We Are Now

Following an extensive feasibility stage considering the full range of potential development intervention, the concept has been established and the design developed to RIBA Stage 2 (+). The planning application will be submitted in September 2026. The stage 3 design and early procurement phase is currently underway.

What Comes Next?

Subject to the requisite planning approvals from the City of London ,  the design and procurement phases will be developed prior to placing the main building contract and Quadrant will manage the construction and leasing phases through to practical completion and handover.

The development proposals are underpinned by the following business Plan objectives:

• Delivering high-quality office space designed for modern businesses.
• A retrofit-first approach to significantly minimise embodied carbon across the development, whilst sympathetically enhancing the vertical footprint by leveraging on the existing substructure and providing the best-in-class amenities required by the current and future occupational market.
• Improving environmental performance to create a more sustainable, future-ready workplace, with the highest sustainability credential in the marketplace.
• Improving biodiversity and the urban greening factor across the site.
• Enhancing the building’s ground floor to provide a more welcoming and engaging interface with the streetscape and wider public realm.

Delivering a sensitive architectural upgrade that responds to the surrounding townscape.

Quadrant and Union Investments have appointed a tier 1 professional team led by Hopkins Architects, Arup, Chapmans BDSP, Third London Wall and Exigere.