L&O

What L&O does

Leigh & Orange (L&O) is a Hong Kong-headquartered architectural consultancy established in 1874, operating as one of the oldest continuously practicing architectural firms in Asia with 300+ design professionals and seven offices across Hong Kong, Mainland China (Shenzhen, Beijing, Shanghai, Fuzhou), Macau, and the Middle East (Qatar). The firm delivers comprehensive architectural services spanning masterplanning, architectural design, interior design, landscape design, sustainable design, and project management across building typologies including education, healthcare, hospitality, sports, transportation, data centers, and government infrastructure, with a portfolio featuring the Kai Tak Sports Park, Sandy Ridge Data Park, K11 ELYSEA, and Al Shaqab Equestrian Academy. L&O is the first Hong Kong architectural firm to hold ISO 9001, ISO 14001, and ISO 45001 integrated certifications, and operates a sustainability team with 16 BEAM Pro/Affiliate, 6 LEED AP/GA, and 3 China GBL Manager credentials to deliver green-certified buildings under BEAM Plus, LEED, China GBL, and WELL standards.

L&O serves government agencies, institutional clients, and private developers through direct enterprise engagement, competitive tenders, and repeat relationships, with revenue generated on a project-by-project professional services fee basis; specific pricing is not publicly disclosed. Marquee clients include the Hong Kong Government (Kai Tak Sports Park, Legislative Council Complex expansion), Hong Kong Jockey Club, Chow Tai Fook Financial Group, New World Development (K11), HKUST, and Melco Resorts. The firm pursues growth through expansion into AI infrastructure design (lead consultant on the HK$23.8 billion Sandy Ridge Data Park), Middle East and Southeast Asia markets, and TOD/institutional typologies on the Mainland, while maintaining a WA100 Top 100 ranking and an active sustainability standards-setting role via HKGBC, BEC, and China GBC Hong Kong Chapter memberships. The leadership team is anchored by Managing Director Ivy Lee alongside Executive Directors Alan Li, Kelvin Li, and Steven Humphrey.

Name

L&O

Legal name

Leigh & Orange Limited

Website

https://leighorange.com

Company type

Private

Founded year

1874

Operating status

Operating

Headcount range

251–500 employees

Short description

L&O is a Hong Kong-founded architectural consultancy (est. 1874) with 300+ professionals across seven offices, providing masterplanning, architectural, interior, and sustainable design services to government agencies, private developers, and institutional clients across Greater China and the Middle East.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

Architectural Services (541310), Architectural Services (54131)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Sustainable/Green Building & LEED Consulting (BPAHAKAG), Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)

Keywords

• Architectural design services
• Sustainable building design
• Interior design consultancy
• Masterplanning and urban design
• Green building certification

Headquarters

HQ city

Hong Kong

HQ country

Hong Kong SAR China

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Architectural Design Services: L&O provides comprehensive architectural design consultancy services including masterplanning, architectural design, interior design, landscape design, and project management. Revenue is generated through professional service fees for design consulting on projects of varying scale and complexity across multiple sectors and geographies.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

L&O (Leigh & Orange Limited) is a Hong Kong-headquartered architectural design consultancy operating since 1874, providing comprehensive design services including architectural design, interior design, masterplanning, urban design, landscape design, and sustainable design integration. The firm employs 300+ international professionals and delivers projects across Hong Kong, Mainland China, the Middle East, and Southeast Asia spanning commercial, residential, institutional, sports, healthcare, and infrastructure typologies.

Product overview

Leigh & Orange (L&O) is a Hong Kong-based architectural firm established in 1874, offering comprehensive architectural and interior design services. The firm operates across multiple project categories including Education, Healthcare, Hospitality, Transportation, Sports facilities, Data Centers, and Masterplanning. L&O's service portfolio includes architectural design, interior design, masterplanning, and sustainability consulting. Notable projects include the Kai Tak Sports Park, Qianhai CTF Finance Tower, and the company's own L&O GreenWell Studio. The sustainability division provides green building certification services including BEAM Plus, LEED, and China GBL assessments.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Full-scope architectural design consultancy covering commercial, residential, institutional, sports, healthcare, and infrastructure projects. Services a client base of government agencies, developers, and institutional organizations across Hong Kong, Mainland China, the Middle East, and Southeast Asia.
• Interior Design Services Professional interior design services delivered as part of the integrated design offering for commercial, hospitality, institutional, and residential clients.
• Masterplanning and Urban Design Urban-scale masterplanning and urban design services for government agencies and developers, including large-scale developments and district-level planning initiatives.
• Sustainable Design and Green Building Certification Consulting Sustainable design integration and green building certification consulting covering BEAM Plus, LEED, and China Green Building Label frameworks, supported by in-house certified professionals (16 BEAM Pro/Affiliate and 6 LEED AP/GA staff).

Quantifiable outcome

• Kai Tak Sports Park attracted over 1.9 million visitors within its first half-year of operation (March–August 2025), with venue utilization rate approaching 90%.
• +2 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core.

• Business Environment Council (BEC)coreOthersL&O is a foundation member of the Business Environment Council (BEC), one of Hong Kong's leading environmental organizations focused on sustainable business practices. This membership supports L&O's sustainability thought leadership and environmental advocacy.
• Hong Kong Green Building Council (HKGBC)coreOthersL&O is an organizational member of the Hong Kong Green Building Council (HKGBC), contributing to the development of green building standards and practices in Hong Kong. L&O's Managing Director Ivy Lee serves as a director on the HKGBC board.
• China Green Building Council Hong Kong ChaptercoreOthersL&O is a corporate member of the China Green Building Council Hong Kong Chapter, supporting the advancement of green building practices in the region.
• Hong Kong Green Building Council (BEAM Pro/Affiliate Programme)coreOthersL&O maintains a team of 16 BEAM Pro and BEAM Affiliate certified professionals and 6 LEED AP/GA certified professionals, demonstrating deep integration with green building certification standards bodies.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Aedas: Aedas is a Hong Kong-headquartered global architecture firm with comparable scale, regional presence across Asia and the Middle East, and similar multi-typology practice spanning commercial, residential, hospitality, transportation, and education. Direct competitor for HK, Mainland China, and Middle East mega-project mandates where both firms are routinely shortlisted.
• Wong Tung & Partners: Wong Tung & Partners is a long-established Hong Kong-based architectural practice with comparable multi-disciplinary capabilities in masterplanning, architectural, and interior design. It is one of L&O's closest local competitors for HK government and private developer projects of similar scale and typology.
• Ronald Lu & Partners (RLP): RLP is a Hong Kong-based architectural practice with strong regional presence across Greater China and a portfolio spanning mixed-use, residential, hospitality, education, and transportation. Direct competitor for HK and Mainland China developer-led projects where brand reputation and design quality are key selection criteria.
• P&T Group (Palmer & Turner): P&T Group is one of Asia's oldest architectural practices (founded 1868), with deep roots in Hong Kong and regional offices across Asia and the Middle East. It is a direct heritage peer to L&O with similar century-long history, multi-typology practice, and government/private developer client base.
• Benoy: Benoy is a UK-headquartered international architectural practice with strong presence across Asia (Hong Kong, Shanghai, Singapore) and the Middle East, focused on commercial, retail, mixed-use, and hospitality projects. Comparable to L&O in regional diversification, mixed-use specialization, and large developer client base.

Broad incumbents

• Arup: Arup is a global engineering and design consultancy that has collaborated with L&O on the Kai Tak Sports Park since 1998 and is a regular partner or competitor on Hong Kong mega-projects. Arup's engineering-led practice overlaps with L&O's technical advisory and sustainability work but is significantly larger and more diversified across infrastructure sectors.
• Skidmore, Owings & Merrill (SOM): SOM is a global architecture and engineering firm with deep presence in Asia (Hong Kong, Shanghai, Singapore) and a portfolio of mega-projects across commercial, aviation, healthcare, and government sectors. It is a relevant competitor for the largest HK, Mainland China, and Middle East mandates where L&O also competes.
• Kohn Pedersen Fox (KPF): KPF is a global architecture firm with strong Asia practice (Hong Kong, Shanghai, Seoul) and an extensive commercial tower and mixed-use portfolio comparable to L&O's Qianhai CTF Finance Tower and K11 ELYSEA work. KPF competes with L&O for marquee commercial and mixed-use developer mandates across Greater China.
• Foster + Partners: Foster + Partners is a UK-headquartered global architecture firm with significant Asia presence and a track record of HK and Middle East mega-projects (airports, cultural venues, government buildings). Comparable to L&O in sustainability positioning and competing for the same tier of prestigious institutional commissions.

Emerging players

• Populous: Populous is a global architecture firm specializing in sports and entertainment venues, directly comparable to L&O's Kai Tak Sports Park, equestrian, and stadium portfolio. While larger globally, it represents a focused competitor in the sports infrastructure niche where L&O has built distinctive HK and Middle East credentials.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/LeighandOrange
• LinkedInlinkedin.com/company/leigh-&-orange-ltd
• Instagraminstagram.com/leighorange_architects

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about L&O