Dar Al-Handasah
Perkins+Will
T.Y. Lin International
Penspen Group
Pierre-Yves Rochon
R&H Rail (Pty) Ltd
IPA Advisory
Landrum & Brown
D2 Consult International GmbH
Ross & Baruzzini
Currie & Brown
Maffeis
Integral Group
about dar group
About Dar Group
about dar group
Dar Group around the world
Dar Group is a multinational group of consulting firms covering a spectrum of specialized design and consultancy services. Our individual excellence is strengthened by integration.
Some of the most recognizable names in the industry are proud members of Dar Group. We draw on the resources and expertise of the entire network.
We are a 13,000-strong workforce spread across the US, Europe, the Middle East, and Africa. Our people dedicate their will, wisdom and effort to transform physical environments for the better.
The Dar Group is an international network of professional service firms, comprised of over 13,000 staff members assisting clients in over 100 countries around the world. We’re dedicated to planning, designing, engineering, and project managing facilities, installations and structures that contribute to the sustainable advance of communities worldwide.

With its principal offices in Beirut, Cairo, London, Pune, Amman, Chicago, San Francisco, Hong Kong, Taipei, Singapore, Paris, Cincinnati, Linz, St. Louis, Johannesburg, and Vicenza, Dar Group operates from a total of 193 offices in 46 countries spanning the Americas, Europe, Australasia, the Middle East, Africa, and Asia.
Founded in 1956, Dar Al-Handasah (Shair and Partners) is one of the world’s leading international consultancies with five design centers in Beirut, Cairo, London, Pune, and, Amman and 45 regional operation offices in 30 countries throughout the Middle East, Europe, Africa, Asia, and Commonwealth of Independent States (CIS) countries. Visit Website
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Perkins+Will is a global architecture and design firm with 24 offices focusing on local, regional, and global work in a variety of sectors including commercial, civic, cultural, healthcare, education, science and technology, and transportation. The firm, which was established in 1935, became part of the Dar Group in 1986. Visit Website
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Founded in San Francisco in 1954, T.Y. Lin International is internationally recognized for excellence in civil and structural engineering. The award-winning firm specializes in the planning, design and construction engineering/inspection of public and private infrastructure. Operating from offices throughout the US and Asia, T.Y. Lin International has a wellfounded reputation for providing clients with engineering solutions that are of high quality, responsive to need, innovative, cost effective, and constructible. Visit Website
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Penspen provides studies, engineering and operations, and integrity and maintenance services to the global oil and gas industry. Founded in 1954, the firm has completed over 5,000 pipeline and pipeline-related projects in over 40 countries. Visit Website
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Pierre-Yves Rochon is one of the world’s renowned interior design firms, specializing in designs for the hospitality industry. The firm’s prestigious worldwide commissions reflect its core belief that the most important factor in the design process is its base of creative, experienced and technically proficient experts, all of whom share common goals of excellence in interior design. Visit Website
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R&H provides comprehensive and integrated consulting services to the railway sector. With over half a century of railway planning and offices throughout South Africa, R&H is one of Africa’s largest private rail consultants. Visit Website
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IPA Advisory is a leading specialist economic practice providing consultancy services in Transactions, Regulation & Policy and PPP across the energy, water and infrastructure sectors. With extensive international experience across the UK, Europe, MENAT region and the Far East, IPA is recognised as a leading specialised practice for global infrastructure economics. Visit Website
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Founded in 1949, L&B is one of the world’s oldest and most accomplished aviation planning consultancy firms. It provides services to the top 50 USA airports. In the last 10 years, it expanded its global reach to the aviation markets in Greater China, Asia, Australia, and the Middle East. Visit Website
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Founded in 1985, D2 is specialized in modern infrastructure, automated tunnelling and complex lining systems. The firm is renowned for innovation and groundbreaking problem solutions. D2 has its roots in applied research carried out on behalf of the Austrian Construction Industry. Visit Website
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Founded in 1953, Ross & Baruzzini provides professional engineering, technology consulting, architectural, and construction administration to clients in the education, government, healthcare, and transportation industries. Specialties include IT consulting, security systems, wireless communications, systems engineering, fire protection, mechanical, and electrical engineering. Visit Website
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One of the world’s leading construction consultancies, Currie & Brown is dedicated to advising clients in respect of the management and utilization of their physical assets. The firm provides a range of construction management specialist skills including cost management, project management, building surveying, PFI/PPP services, due diligence, sustainable working, and other associated advisory services. Visit Website
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Founded in 2000 and based in northern Italy, Maffeis is one of the world few leading engineering firms in the field of Tension Membrane/Fabric structures and ETFE foil designs for long span structural applications such as stadia covers, façades and retractable roofs/systems. Visit Website
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Integral Group is an interactive global network of mechanical, electrical, plumbing, and energy engineers collaborating under a single deep green engineering umbrella. We specialize in the design of simple, elegant, cost-effective systems for a wide variety of project types: residential, mixed use, critical environments (cleanrooms, laboratories, and data centers) industrial facilities, office buildings, educational facilities, civic and commercial buildings. With a staff over 250 located in twelve offices across Canada, the United States, and Great Britain Integral Group is regarded as an innovative leader in building system design. Visit Website
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