Back to the Office - 20 City Office Developments Underway in 2025

Posted by London Build 2025 on 10th October 2025 -

A clear sign of the market’s renewed confidence is 22 Bishopsgate — the 62-storey tower completed during the pandemic, when working from home was the norm — which is now fully let. Once seen as a test case for the post-Covid office, its success reflects the strong appetite for high-quality, flexible, and amenity-rich workspaces.

On the positive side, the development pipeline across the City is bustling once again. From major schemes nearing completion to long-term towers reshaping the skyline, here’s a look at some of the most significant office projects underway at the start of 2025. Click on each development name to view the full project profile and progress updates.

 

1 Broadgate – Completing 2025 – 546,000 sq ft – Fully let

A flagship British Land and GIC project, 1 Broadgate forms part of the Broadgate Campus regeneration. Its mixed-use design integrates offices, retail, and leisure spaces, underlining the area’s transformation into a 24/7 destination.

 

2 Aldermanbury Square – Completing 2026 – 321,100 sq ft – Fully let to Clifford Chance

This redevelopment by GPE will become the new headquarters for Clifford Chance. The scheme includes extensive public realm improvements and sustainability features targeting BREEAM ‘Outstanding’.

 

2 Finsbury Avenue – Completing 2027 – 750,000 sq ft – At least 33 % let

Part of the Broadgate masterplan, this major project will deliver a landmark twin-tower office complex with large floorplates, terraces, and innovative wellness-focused amenities.

 

Edenica – Completing 2025 – 90,000 sq ft – 50 % let

Developed by BauMont Real Estate Capital and YardNine, Edenica combines premium office space with advanced energy efficiency and a commitment to circular-economy principles.

 

One Liverpool Street – Completing 2026 – 176,000 sq ft – 90,000 sq ft available

This AXA IM Alts and Lipton Rogers scheme delivers a prime location opposite Liverpool Street Station, designed to attract financial and tech tenants seeking exceptional connectivity.

 

One Exchange Square – Completing 2026 – 430,000 sq ft

The redevelopment of the Deutsche Bank site provides flexible Grade A office space with a strong ESG agenda, targeting net-zero carbon in operation.

 

Fifty Fenchurch – Completing 2028 – 650,000 sq ft

A long-term scheme by The Clothworkers’ Company, this project will deliver a striking tower designed by Eric Parry Architects, incorporating heritage structures and extensive landscaping.

 

One Undershaft – Completing 2030 – 1.7 million sq ft

Set to become the tallest building in the City, One Undershaft will redefine the skyline with a vertical village concept and major public viewing gallery.

 

Ten Gresham – Completing 2025 – 145,000 sq ft available

A high-spec redevelopment close to the Bank of England, Ten Gresham aims to attract occupiers seeking flexible, sustainable, and tech-enabled workspaces.

 

Woolgate – Completing 2025 – 320,000 sq ft – 38,800 sq ft available

This comprehensive retrofit by Stanhope transforms a 1990s office into a future-ready workplace with rooftop terraces, natural ventilation, and smart-building systems.

 

Sira Road EC1 – Completing 2025 – 42,000 sq ft

A boutique-scale office scheme delivering contemporary workspace with strong environmental credentials and excellent transport links.

 

75 London Wall – Completing 2027 – 465,822 sq ft

This major refurbishment brings new life to an existing building, offering large-format floors and enhanced amenities designed for hybrid working patterns.

 

One Leadenhall – Completing 2025 – 420,000 sq ft

Located beside Leadenhall Market, this new tower by Brookfield Properties combines cutting-edge sustainability with premium retail at ground level.

 

10 King William Street – Completing 2026 – 139,000 sq ft

A mixed-use office redevelopment providing flexible work environments with panoramic views and advanced energy-efficient systems.

 

20 Giltspur Street – Completing 2025 – 90,000 sq ft

Positioned near Smithfield Market, this project delivers high-quality workspace targeting the creative and professional sectors.

 

Holborn Viaduct – Completing 2025 – 166,850 sq ft

A next-generation office building emphasising wellbeing, biophilic design, and flexible layouts to support collaborative working.

 

Sixty Three Coleman – Completing 2025 – 40,000 sq ft

A smaller-scale yet striking redevelopment offering modern workspace in a heritage setting, ideal for boutique financial and legal occupiers.

 

Princes – Completing 2025 – 53,000 sq ft

This project provides premium Grade A offices with strong ESG credentials and outdoor spaces, catering to mid-size City tenants.

 

Adelaide House – Completing 2026 – 129,000 sq ft

A sensitive refurbishment of the City’s first steel-framed building, restoring its art-deco heritage while upgrading it to modern sustainability standards.

 

100 New Bridge Street – Completing 2026 – 190,000 sq ft

A major redevelopment providing flexible, high-performance office floors with wellness amenities and rooftop terraces.

 

10 New Bridge Street – Completing 2025 – 50,000 sq ft

A compact yet contemporary scheme delivering efficient, light-filled offices near Blackfriars Station.

 

The volume and scale of these developments reflect a City of London market driven by confidence, not speculation. While hybrid working continues to shape office demand, the consistent pre-letting of premium buildings shows that occupiers are prioritising quality, location, and sustainability over sheer space.

Developers are responding with greener designs, flexible floorplates, and amenity-rich environments that blend technology with wellbeing. As projects like One Undershaft and Fifty Fenchurch rise over the next decade, the Square Mile is set to evolve once again — not just as a financial hub, but as a global benchmark for the future of the workplace.

This momentum will be reflected at London Build 2025, where the industry’s leading developers, architects, and investors will gather to explore the future of commercial construction, sustainable design, and the evolving role of offices in the modern city. With so many landmark projects underway, the event promises to showcase the innovation and resilience defining London’s next chapter of growth.