Plans to turn former GSK offices to residential-led scheme

Hadley has submitted a hybrid planning application to the London Borough of Hounslow for the redevelopment of the former GlaxoSmithKline (GSK) headquarters at 980 Great West Road. The 13-acre Brentford site is set to become one of the UK's largest reuse-led regeneration projects.

The proposal outlines the creation of approximately 2,300 new homes across various tenures, including Build to Rent, co-living, and student housing. Of these, 35% are designated as affordable housing. In addition to residential development, plans include more than 320,000 square feet of commercial, retail, and community space intended to support local enterprises, education providers, and charitable organisations.

A central element of the masterplan is a reuse-first strategy, which retains the basement, substructure, and two existing buildings on the site, including the prominent tower. The retained structures are intended to reduce the project’s embodied carbon footprint. The tower, redesigned by Studio Egret West, is slated to house new residences along with communal amenities and a rooftop conservatory.

The scheme proposes that over 60% of the site be allocated to public realm, with new play areas, gardens, and improved access to the River Brent. The design aims to integrate the site with the surrounding urban and natural environment, linking it to Boston Manor Park and Brentford High Street. Landscape design is also being led by Studio Egret West.

The development team includes Haworth Tompkins as lead architect, with plot architecture contributions from Studio Egret West, Metropolitan Workshop, and dRMM. Planning consultancy is being provided by Turley. According to Hadley, the proposal has been informed by 18 months of community engagement involving local residents and stakeholders.

Hadley describes the project as a rare opportunity to deliver large-scale housing, employment, and community infrastructure, while setting a precedent for sustainable urban regeneration in London. The approach prioritises circular economy principles and aims to limit environmental impact.

The planning application is expected to be reviewed by the London Borough of Hounslow's Planning Committee by the end of 2025.