Main construction works at 75 London Wall are poised to begin in early 2026 after developers signed a landmark £250 million building contract with Multiplex. The deal marks a major step for the £1.2 billion City of London project led by Gamuda Berhad and Castleforge.

The scheme involves the extensive refurbishment and expansion of an existing office block. By keeping a large portion of the original frame, the project aims to reduce embodied carbon while increasing the total floor space by half. Erith Group has already completed the initial demolition and enabling works on the site. Upon completion in early 2028, the building will provide 450,000sq ft of Grade A office space. It will also house commercial units on the ground floor and a landscaped garden that connects to Austin Friars.

Niall Farmer, head of Gamuda Land United Kingdom, said: “This contract marks a significant milestone in Gamuda Land’s continued expansion in the United Kingdom and in our strategy to unlock long-term value from prime City of London assets. 75 London Wall represents a rare opportunity to reposition an existing building of scale into more than 450,000sq ft of future-ready, Grade A workspace, at a time when supply of top-tier, highly sustainable offices in the City remains structurally constrained. Through hands-on oversight from planning approval through to contractor procurement and value engineering, Gamuda has shaped a redevelopment that is efficient, commercially resilient and sustainability-led. As global corporates increasingly seek high-quality, low-carbon office space in prime City of London locations — amid a well-documented shortage of top-tier supply — this project is well positioned to meet that demand and deliver enduring value for occupiers and the City. We look forward to working with Multiplex to bring this vision to life.”

The project has been designed by architects Orms to meet high environmental standards including BREEAM Outstanding and NABERS UK 5 Star. Michael Kovacs, founding partner of Castleforge, added: “At a time when London is experiencing its lowest level of office construction starts in almost two decades, delivering 75 London Wall to practical completion in Q1 2028 will provide the market with much-needed, best-in-class workspace at precisely the moment when supply constraints are most acute. Office real estate is a cyclical sector – you have to be building when no one else is willing or able. I’m proud of the Castleforge development team, whose expertise and dedication were met by Multiplex’s technical support and collaborative approach to agree this contract, giving us confidence that this will become one of the best schemes in the City on completion. The quality, efficiency and flexibility of 75 London Wall has been exceptionally well received by a wide range of potential occupiers seeking this calibre of workspace in the City, and the 5000 plus employees the building can accommodate will bring significant benefits to the London economy.”

Callum Tuckett, managing director of Multiplex Global, said: “Delivering a project of this scale and complexity in the heart of the City requires not just construction expertise, but the ability to innovate under constrained site conditions whilst maintaining the highest sustainability standards. 75 London Wall represents the future of sustainable commercial development, and we look forward to bringing our global expertise in complex urban construction to create a building that sets a new standard for the City. Our work with the project team over the past year has positioned us perfectly to hit the ground running and deliver this scheme to the highest standards.”