- The Mandarin Oriental development, with best-in-class office and retail offerings, will reimagine the workplace with sustainability and hospitality at its heart
- One Causeway Bay, which occupies the former site of the historic Excelsior Hotel on the waterfront of Hong Kong’s Victoria Harbour, to open in Q2 2025

Senior leadership from Mandarin Oriental Hotel Group and partners celebrates the topping out of One Causeway Bay. From left to right: Mr Raymond Wong, Executive Director of Hongkong Land, Mr John Latter, Project Director (One Causeway Bay) of Mandarin Oriental Hotel Group, Mr Craig Beattie, Chief Financial Officer of Hongkong Land, Mr Matthew Bishop, Chief Financial Officer of Mandarin Oriental Hotel Group, Mr Laurent Kleitman, Group Chief Executive of Mandarin Oriental Hotel Group, Mr Elton Chan, Chief Executive of Jardine Pacific Limited, Mr Stanley Chen, Executive Director of Gammon Construction Limited.
Hong Kong, 10th July 2024 — Mandarin Oriental Hotel Group has completed the topping out of its latest venture in Hong Kong, One Causeway Bay. The building is the city’s newest premium waterfront commercial development, in the rapidly-evolving neighbourhood of Causeway Bay.
The development is sited at the historic “Lot No. 1”, the first piece of land to be acquired in Hong Kong by James Matheson in 1841, which is behind the new name of “One Causeway Bay”. From 1973 until 2019 the site was the home of the famed Excelsior Hotel, and remains under the ownership of the Mandarin Oriental Hotel Group.
One Causeway Bay is a Grade A premium commercial development, with Kohn Pederson Fox serving as the design architect and Ronald Lu & Partners acting as the lead architect. Inspired by its unique harbourfront location, the building’s façade reflects the movement of the waves in Victoria Harbour with interlocking and undulating panes of glass. The building has been conceived with occupier wellbeing and sustainability at its heart, to deliver a destination that advances the future of the workplace with cutting edge property technology and facilities for tenants. State-of-the-art air purification systems will be installed throughout the building, while a green rooftop terrace will also provide a rejuvenating place for tenants.
Laurent Kleitman, Group Chief Executive of Mandarin Oriental Hotel Group, commented “One Causeway Bay represents a reimagination of the workplace in Hong Kong. Rising from the foundations of the iconic Excelsior Hotel we are bringing our globally- renowned reputation for craftsmanship, elegance and exceptional service combined with modernity and innovation to the office market in Hong Kong to create a truly unique space to establish and carry out business. In line with our brand values, sustainability is at the core of the re-development, and we are delighted with the certifications already received today. Most importantly however, this development and our investment in it is a conscious sign of our commitment to and confidence in Hong Kong and its future.”
Upon completion, One Causeway Bay will be a mixed-use tower, offering 500,000 sq. ft. of premium Grade A office space across 24 floors, along with 5 floors dedicated to retail, totalling 55,000 sq. ft., which includes a rooftop bar and restaurant. The building will be managed by Hongkong Land, a major listed property investment, management and development group that currently oversees over 9 million sq. ft. of prime commercial assets throughout Asia.

One Causeway Bay is Hong Kong’s newest waterfront office building, overlooking the captivating Victoria Harbour view.
Main contractor Gammon is overseeing the construction of the building, using the most advanced materials and techniques to ensure a truly world-class design and finish.
Kevin O’Brien, Chief Executive of main contractor Gammon added, “At Gammon, we are dedicated to pioneering sustainable construction practices that contribute to a greener and healthier future. Our commitment to environmental stewardship drives us to innovate and set new standards in the industry. This project is a testament to our vision for a sustainable Hong Kong.”
One Causeway Bay has been designed with the highest sustainability standards in mind, that are focused on enhancing tenant wellness, increasing operational efficiency and reducing its environmental impact. Sustainable materials such as green concrete, green rebar, FSC-certified timber and recycled materials were used throughout the building. Once completed, hardware such as A.I. optimised chiller plant control and energy saving LED lighting systems will also be installed.
The building has already achieved provisional Platinum rating from BEAM Plus, Platinum pre-certification from LEED (Leadership in Energy and Environmental Design), pre-certification from WELL as well as a Platinum rating from WiredScore certification. The building is also targeting to obtain Platinum rating from SmartScore certification.
Following the successful topping out, a show suite will be launched in August to illustrate the fabulous design of the building. The project is expected to open its doors in Q2 2025.
ENDS
About One Causeway Bay
Sited on Hong Kong’s Victoria Harbourfront and in the heart of one of the city’s most vibrant and well-connected business and shopping districts, One Causeway Bay is Hong Kong’s newest premium commercial development. The mixed-used tower comprises 500,000 sq. ft. of premium Grade A office space across 24 floors, as well as 5 floors, totaling 55,000 sq. ft., dedicated to retail and F&B including a rooftop bar and restaurant. The building is owned by the Mandarin Oriental Hotel Group, with Kohn Pederson Fox serving as the design architect and Ronald Lu & Partners acting as the lead architect. Hongkong Land will act as asset managers and operators upon completion of construction.
One Causeway Bay has been designed with sustainability and hospitality at its heart. It has achieved provisional Platinum from BEAM Plus, Platinum pre-certification from LEED (Leadership in Energy and Environmental Design), pre-certification from WELL as well as a Platinum rating from WiredScore certification. For leasing enquiries please make contact directly at: enquiry@onecwb.com.
About the Mandarin Oriental Hotel Group
Mandarin Oriental is the award-winning owner and operator of some of the world’s most luxurious hotels, resorts and residences. Recognised for creating exceptional properties, each destination reflects the Group’s oriental heritage, local culture and unique design. The Group’s mission is to completely delight and inspire guests through delivering passionate service. Having grown from its Asian roots over 60 years ago into a global brand, the Group now operates 40 hotels, 12 residences and 24 exclusive homes in 26 countries and territories with many more projects under development. Mandarin Oriental continues to drive its reputation as an innovative leader in luxury hospitality, delivering sustainable growth over the long term.
Further information is available on our Social Media channels and website: www.mandarinoriental.com, including Media Centre.
About Gammon Construction
Headquartered in Hong Kong, Gammon has a reputation for delivering high-quality projects throughout China and Southeast Asia. Its integrated business focuses on civil, building, foundations, electrical and mechanical, facades and interiors work and design, and our construction services division provides considerable plant and steel. The company has a strong building and information modelling department and a digital entity dedicated to furthering the commercial opportunities of its innovation.
Gammon is committed to operating a socially responsible business that is able to deliver clients’ projects to their satisfaction while minimising negative impacts on, and creating positive change for, society and the environment. The company focuses on customers’ needs and how it can best use its abilities and resources to add value for customers through innovative and sustainable solutions.
Jointly owned by Jardine Matheson, an Asian-based conglomerate with extensive regional experience, and Balfour Beatty, a world-class engineering, construction and services group, Gammon employs over 8,000 staff, including one of the strongest technical teams in Southeast Asia.
https://www.gammonconstruction.com/
About Hongkong Land
Hongkong Land is a major listed property investment, management and development group. Founded in 1889, Hongkong Land’s business is built on excellence, integrity and partnership.
The Group owns and manages more than 850,000 sq. m. of prime office and luxury retail assets in key Asian cities, principally Hong Kong, Singapore, Beijing and Jakarta. Its properties hold industry leading green building certifications and attract the world’s foremost companies and luxury brands.
The Group’s Central Hong Kong portfolio represents some 450,000 sq. m. of prime property. It has a further 165,000 sq. m. of prestigious office space in Singapore mainly held through joint ventures, five retail centres on the Chinese mainland, including a luxury retail centre at Wangfujing in Beijing, and a 50% interest in a leading office complex in Central Jakarta. The Group also has a number of high-quality residential, commercial and mixed-use projects under development in cities across China and Southeast Asia, including a 43% interest in a 1.1 million sq. m. mixed-use project in West Bund, Shanghai. Its subsidiary, MCL Land, is a well-established residential developer in Singapore.
Hongkong Land Holdings Limited is incorporated in Bermuda and has a primary listing in the standard segment of the London Stock Exchange, with secondary listings in Bermuda and Singapore. The Group’s assets and investments are managed from Hong Kong by Hongkong Land Limited. Hongkong Land is a member of the Jardine Matheson Group.
For media enquiries please contact
FleishmanHillard Hong Kong
Kitty Lee | +852 9889 1231 | kitty.lee@fleishman.com |
Fergus Herries | +852 5970 3618 | fergus.herries@fleishman.com |