Henrietta House is a landmark headquarters in the heart of Marylebone, home to CBRE since 2011. Originally built in the 1990s, it needed a major transformation to meet modern sustainability and workplace standards. In 2018, we partnered with CBRE to expand and future-proof the building, increasing its size by 50% while avoiding extensive demolition.
Henrietta House
London W1
Transforming a landmark HQ
Considering the local environment
- Added a 50,000 sq ft extension in the courtyard without displacing tenants.
- Retained and stripped the original building to its core, reducing material use.
- Designed open, adaptable spaces to maximise flexibility and efficiency.
Reducing carbon at every stage
- Reused existing M&E services, replacing only what was necessary.
- Exposed services to reduce material demand.
- Energy-efficient heating, lighting, and air conditioning improved performance, contributing to BREEAM ‘Excellent’ certification.
- Natural materials like reclaimed timber, stone, and cork cladding minimised environmental impact.
- Locally sourced furniture reduced transportation emissions.
A commitment to happiness
- 330 bike spaces and end-of-trip facilities replaced executive car parking.
- Wellbeing-focused design created an accessible, productive environment.
- WELL ‘Platinum’ certification recognises its exceptional workplace health and sustainability.
Working better together
- A collaborative process with CBRE accelerated decision-making.
- Inspired by this project, we established Lazari ESG to guide future sustainability initiatives.
The impact
- 507kg CO₂e/m² upfront carbon emissions – within the 2020 LETI target.
- 897kg CO₂e/m² Whole Life Cycle embodied carbon – outperforming RIBA’s 2025 target.
- BREEAM ‘Excellent’ and WELL ‘Platinum’ certified.
- 2023 BCO London Award for ‘Best Corporate Workplace’.
Henrietta House is a blueprint for the future of workspaces, balancing sustainability, wellbeing, and innovation. It proves that retention, reuse, and smart design choices can deliver exceptional results for businesses and the environment alike.
