South Molton Triangle

A new development project is set to transform a prominent London Square, harmoniously balancing heritage and contemporary design. The project highlights the Square’s most attractive destinations, including Gray’s Antiques and the Running Horse pub, while carefully restoring Grade II listed terraced houses.

Grosvenor and Mitsui Fudosan UK have selected Skanska to oversee the construction of two new Category A office buildings as part of a broader mixed-use development. This project aims to enhance the area with modern office spaces, integrating various amenities that cater to the needs of future occupants and the surrounding community. The collaboration highlights a significant step towards revitalising the local landscape and providing sustainable office solutions in the heart of the city.

The proposal outlines the comprehensive demolition, excavation, and construction of a new building, which will feature up to nine storeys of mixed-use space.

The South Molton Triangle is set to transform an 8-acre area within the prestigious Mayfair Conservation Area into a bustling urban quarter, redefining luxury living and working spaces in Central London. Located at 26 South Molton Lane, London W1K 5LF, this ambitious mixed-use development is scheduled for completion in 2027. The project aims to create a vibrant, modern hub that seamlessly integrates high-end residential units with dynamic commercial spaces, enhancing the area’s historical elegance with contemporary design and functionality.

Exciting new visuals have emerged as McGee initiates the deconstruction process at the South Molton Triangle site. At Brookfield House and 56 Davies Street, the dismantling of stone buildings has commenced, with progress set to continue over the coming months.

Meanwhile, RED Construction has successfully completed the soft strip phase at 10, 15-25, 27, and 42 South Molton Street. The focus now shifts towards the main works, scheduled to begin in March 2024, marking the next phase of development at this bustling location.

McGee, an expert engineering contractor, has been enlisted for the South Molton Triangle venture in Mayfair, London, a collaboration between Grosvenor and Mitsui Fudosan UK.

This transformative endeavour spanning 370,000 sq ft will craft a mixed-use scheme encompassing new office spaces, affordable housing, a 5-star hotel, alongside cafes, shops, eateries, communal and leisure areas, all integrated into an enriched public space.

McGee's primary focus lies in constructing two premium office buildings, retail spaces, and dining outlets. Their tasks include various crucial phases such as initial preparation, facade retention, underpinning, demolition, piling, and concrete works for the new basement and core.

Nestled within the Mayfair Conservation Area and involving Grade II listed structures, the project necessitates careful preservation of historical elements, including storing external facades for potential future reconstruction. This endeavor faces challenges like constructing single and second-story basements across the site footprint, demanding extensive groundwork and groundwater management.

McGee, an employee-owned enterprise, stresses early engagement and proactive approaches to ensure successful project completion, leveraging their internal expertise and proficient team.

Seb Fossey, McGee's Managing Director, expressed satisfaction in gaining the trust of Grosvenor and Mitsui Fudosan UK, emphasizing their collaborative strategies and innovative carbon-saving measures.

Simon Armstrong, Grosvenor's Development Director, highlighted the South Molton Triangle's potential in creating sustainable, high-quality living and working spaces while preserving the area's historical character. He praised McGee's understanding of the project vision, their technical prowess, and commitment to preserving historic building facades alongside developing innovative carbon solutions.

This ambitious project incorporates unique carbon-engineered solutions and aims for net-zero carbon in construction and operation, focusing on reducing embodied carbon and waste. The development is set for completion in 2027, with works already underway on site.

Grosvenor and Mitsui Fudosan UK have formed a new joint venture to deliver the key sustainable element in the South Molton Triangle development in Mayfair.

The partnership will deliver best-in-class Grade A office space with a range of retail and F&B outlets at street level in the 263,000 sq ft North and South blocks of the South Molton Triangle scheme.

Grosvenor will deliver the other phases of the project, including community, residential and additional retail elements as well as a new 5* boutique hotel.

Located directly opposite the western entrance of the new Bond Street Elizabeth Line station, South Molton Triangle will provide a gateway into Mayfair enabling the area to become a destination of international significance, welcoming a broader demographic through world-leading design and a dynamic mix of occupiers.

The project will enhance the unique character of Mayfair, preserving historic building façades and retaining the area’s landmarks, including refurbishing The Running Horse pub on Davies Street, whilst investing £8 million in a greener, cleaner more pedestrian-friendly public realm. In line with Grosvenor’s sustainability commitments, the project will minimise embodied carbon wherever possible, with offsetting strategies in place to ensure the development is carbon neutral at practical completion.

Over 300 new cycle spaces will be installed to encourage sustainable modes of travel. New trees and greenery will be planted around the scheme to improve biodiversity and the area will be serviced only by electric vehicles to improve local air quality.

The South Molton Triangle will generate additional spending in the area, creating over 700 jobs in the completed development. The construction phase will create an additional 465 jobs and 80 apprenticeships which will be prioritised for Westminster residents.

Works across South Molton Triangle will start in 2023, concluding in 2027.

James Raynor, CEO, Grosvenor Property UK commented: “Securing a partner with Mitsui Fudosan UK’s experience and global reach is a huge step forward for South Molton Triangle. They share our ambition to create lasting positive social, economic and environmental impact and have a strong track record both in London and globally.

“The South Molton Triangle, combined with our other developments in Mayfair including the redesign of Grosvenor Square, signals our confidence in the future of the West End. Not only will this project create an exciting new destination with its own unique offer, but it will also bring in additional spending, create jobs for Westminster residents and ensure this area of London continues to be a fantastic place to live, work and spend quality time.”

Tomoo Nakamura, Chief Executive, Mitsui Fudosan UK added: "We are delighted to be partnering with Grosvenor in this unique project which we expect will become an exemplar in mixed-use sustainable development.

“From the outset, our shared heritage and common philosophy of creating value – whilst seeking to build a positive and sustainable environment – has been clear. One of Mitsui Fudosan’s key strengths in Japan is in mixed-use, place-making development and we are excited to be participating in a project with similar characteristics in such a high-profile part of central London.”