Thirty High

Victoria, London

Landsec

2025

This extensive retrofit project involves the transformation of an existing 300,000 sq ft office building, aiming to achieve Net Zero in both operation and construction.

The goal is to attain NABERS 5* certification, with an aspirational target of reaching 5.5*. Additionally, the project is ambitiously targeting BREEAM Outstanding certification, with both targets emphasising a commitment to high environmental performance in design and in use.


A key focus of the project is the management of embodied carbon, with a specific target set at Stage 4 for emissions to be less than 400 kgCO2/m2. This would meet LETI B for modules A1-A5 and was achieved through the retention of major building elements such as the existing precast concrete facade. 

This comprehensive approach underscores the project's dedication to sustainability and its intention to present an industry exemplar for the potential there is to retain and retrofit existing buildings.

Visualisations by Conica Studio

© BUCKLEY GRAY YEOMAN