Derwent London targets 29% material reuse at 50 Baker Street redevelopment

Derwent London plans to replace five buildings at 50 Baker Street in Marylebone with a 236,000 sq ft development. The one-acre Portman Estate site will offer workspace, retail and community facilities, alongside 17 residential apartments. The scheme entered planning in 2022. Westminster City Council set a target to reuse at least 29% of existing site material by volume. Investigations shifted the focus toward reducing virgin concrete use. Full retention or recycling concrete into aggregate would not meet the project's objectives. Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Derwent London plc published the original content used to generate this news brief on October 14, 2026, and is solely responsible for the information contained therein. (C)