Thirty High

Westminster, London
Buckley Gray Yeoman

Parmarbrook is appointed as civil and structural engineer by leading UK property developer, Landsec, on the refurbishment of the 30-storey commercial building, Thirty High (formerly Portland House) in Victoria, London. The comprehensive refurbishment will deliver a modern, high-quality office building while retaining many of the building’s original 1960s features.

The revamped 300,000 sqft Portland House will include a new double-height reception on Bressenden Place, a refurbished façade, new windows throughout, a multi-functional event space, and a level 30 rooftop extension. The transformation will bring much sought-after modern and sustainable office space to the market while retaining a landmark building in the Victoria master plan.

Designed to exceed industry-leading sustainability targets, both the construction and operation of Thirty High will be net-zero and will target WELL Core Gold and BREEAM ‘Outstanding’. It also follows the Design for Performance approach, to deliver a NABERS UK rating in line with Landsec targets. Its existing structure will be retained, achieving a c.60% reduction in embodied carbon compared to the current GLA benchmark. Once complete, the fully electric building will operate on energy derived from renewable sources only, including air source heat pumps.

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