Challenges and Opportunities in Commercial Retrofit

Deepika Singhal

Director, Head of ESG and Sustainability

Deepika Singhal

Insights

04 Aug 2025

In a standout contribution to UKGBC’s latest insight on commercial retrofit, Hollis showcases how strategic refurbishment can deliver environmental excellence and long-term value.

Led by Deepika Singhal, Head of ESG and Sustainability, the team delivered a comprehensive retrofit of an 18,000 sq/m early-2000s office building in London. The occupier, driven by ambitious sustainability goals, sought a net zero carbon workspace with top-tier credentials. Hollis responded with a strategy targeting NABERS 4.5-star, BREEAM RFO Excellent, and WELL Gold certifications.

Circular economy principles were embedded throughout- reusing raised access floors, ceiling panels, fan coil units, and glass partitions—limiting embodied carbon to under 225 kgCO₂/m².

The result? A future-proofed asset aligned with the Net Zero Carbon 2050 trajectory and a renewed 15-year lease from a premium occupier.

Read the full article to explore more.