Home for Human Endeavor
We inspire global impact and create environments that enhances people’s lives, making the world feel more intimate and uplifting, like home.
Sidara HQ 150 Holborn — London, UK (Photo credit: Perkins&Will)
Introduction Sidara is one of the world’s leading consultancies, providing design, planning, engineering, and project management services for energy, buildings, cities, transportation, civil, infrastructure, water and the environment. Our global collaborative of specialists elevates how people live, inspires global impact, and makes room for cultures to shine. Together, we are focused on longterm human and social advancement – dedicated to building a healthier, more equitable world. From decarbonization to technology advancement and improving the wellbeing of our planet and human society, we are committed to building a better world where humanity and nature coexist, moving forward as one, to make our big world feel intimately small.
Sidara at a glance:
55,000+ Employees
70+ Countries
20+ Companies
450+ Offices
ENR Rankings We are committed to service excellence and have been consistently ranked among the top ten consultancies by Engineering News Record (ENR) for over 18 years. Top 225 Design Firms Working Abroad
9th
Sidara Overall Ranking
Top 10
Top 10
By Region
By Market
1st
Middle East
3rd Africa
2nd
8th
Buildings
Tranportation
6th
7th
USA
Sewer/Waste
** Rankings do not currently include Wood who joined Sidara in 2026
Sacramento Valley Station Area Plan — Sacramento, California
Our impact Our shared vision and commitment to enhancing livability, sustainability, and digital solutions aim to create innovative places where humanity and nature coexist, connecting people, empowering communities, and protecting the place we all call home.
Livability We believe the built environment should bring people together and improve the quality of life for all. Yet, in today’s world, all too often, those who use our buildings, cities and transport networks can be an afterthought. Our collective of architecture, engineering, and consulting brands shift this paradigm. Wherever we operate in the world, we shape places that unite communities, empower their economies, and inspire a more equitable, seamless and delightful world for all.
Sustainability The planet and its systems are under immense and growing pressure from human activity. Cultures, communities, and clients are increasingly needing to shape a more sustainable world and lighten our footprint on the planet. We need to deliver solutions that reduce carbon emissions, protect biodiversity and safeguard the place we all call home – at scale. Our network of architecture, engineering, and consulting brands strives to answer this call.
Digital The physical and digital worlds are merging rapidly. Today, we demand more than ever before of the places and spaces we occupy each day. To keep pace, the built environment must stand ready to embrace data and emerging technologies. Our collaborative of architecture, engineering, and consulting companies is at the forefront of this mission, creating harmonized connections between people and place.
Our expertise Sidara leads with imagination, commitment, determination, and resilience in some of the world’s most technically challenging and dynamic industries. Sectors
Aviation
Communities
Healthcare
Environment
Mobility
Ensuring that travelers have a seamless, enjoyable transition from the moment they leave home to the time they board a flight is more important than ever.
As stewards of our local communities, we are focused on how we can create a better world through the power of architecture, design, and engineering, guided by innovative and technically advanced approaches.
As societies and the people within them continue to change, our healthcare systems must evolve with them. Central to this is improving access to all
To create spaces where humans and nature coexist, we work to integrate ecosystems with the built environment through methods like embedded biophilia and walkable urban design.
As our lifestyles and expectations change, we need to rethink how we get around, and ensuring journeys are efficient, affordable, and altogether more sustainable.
Water
Science & Technology
Energy Transition
Energy Security
Materials
From the labs helping to eliminate the world’s most infectious diseases to the data centers processing our every interaction online, the spaces that host humanity’s major breakthroughs require something special to make them a reality.
As we transform the places we live and our lifestyles to become more sustainable, it is crucial that energy is affordable and accessible to all. so that the quality of all life can be improved.
We combine planning, engineering, operational and advisory expertise to strengthen energy systems, improve reliability, reduce risk and support resilient infrastructure worldwide.
Materials drive manufacturing, infrastructure and essential technologies worldwide. Our integrated planning, design, engineering and advisory expertise enables the delivery of safer, more efficient and resilient materials systems across evolving global supply chains.
Our ability to effectively manage, treat, reuse, and transport this vital resource is critical to our wellbeing and the sustainability of the place we all call home.
Aviation The global leader in the planning, design and delivery of airports.
#1 International design firm in airports (ENR 2025)
23 Of top 30 global airports advised on
300+ Aviation clients around the world Centralny Port Komunikacyjny, Warsaw, Poland — Dar
Communities Creating the spaces and places that inspire the imagination, protect our planet, and improve the quality of life.
#2 International design firm in buildings (ENR 2025)
#1 International design firm in education (ENR 2024)
#1 International design firm in religious (ENR 2024) Southwest Library, Washington, USA — Perkins&Will
Healthcare Working across the entire spectrum of care delivery, shaping environments that improve the patient experience while reducing the impact on the environment.
#1 International design firm in healthcare (ENR 2025)
#1 World’s largest medical equipment planning team
19 of top 20 US healthcare systems advised on
The Greater Accra Regional Hospital, Accra, Ghana — Perkins&Will
Environmental Solutions As advocates of a better world and stewards of our natural environment we work to deliver projects that are equitable, sustainable, and, that make a genuine difference to our world.
O’Hare Global Terminal, Illinois, United States — TYLin | Landrum & Brown
Mobility Designing strategies that are boundaryless, integrated, experiential and adaptable, to benefit both society and the environment.
#2 International design firm in bridges (ENR 2025)
#9 International design firm in transportation (ENR 2025) Oakland Bay Bridge, San Francisco, USA — TYLin
Science & Technology Applying deep technical expertise to plan, design and engineer the most technologically advanced spaces on earth – and beyond.
Cavendish Laboratory, University of Cambridge, UK — Currie & Brown
Water
Providing tailor-made and environmentally sensitive solutions at all stages of the water lifecycle to provide clean, safe, and affordable water to our communities.
Newtown Creek Wastewater Resource Recovery Facility, New York City, USA — TYLin
Energy Transition Providing tailor-made and environmentally sensitive solutions at all stages of the water lifecycle to provide clean, safe, and affordable water to our communities.
Biopio & Baia Farta Solar Farms, Angola, Africa — Dar
Energy Security Energy underpins modern life, powering communities, industries and economies that depend on reliable and resilient systems. As global pressures make energy systems more complex, Sidara brings together expertise in planning, engineering, operations and advisory to help clients strengthen performance, reduce risk and enhance the resilience of critical energy infrastructure. Cenovus West White Rose Topsides Project, Newfoundland, Canada — Wood
Materials Materials sit at the heart of global industry, powering manufacturing, infrastructure and the technologies the world relies on. As demand grows and supply chains evolve, Sidara brings together expertise in planning, design, engineering, operations and advisory to help clients build safer, more efficient and resilient materials systems across the value chain.
The world’s first industrial scale fossil free plastics facility, Antwerp, Belgium — Wood
Sidara HQ 150 Holborn — London, UK
Our collaborative The brands are connected by common purpose and values. Our companies have worked on some of the most iconic and impactful projects throughout the world. Through livability, sustainability, and digital solutions, we tackle the world’s biggest, most ambitious, and most critical challenges. Together we are Sidara.
Buildings & Infrastructure
Infrastructure & Engineering
Architecture
Project Management
Specialty Brands
Energy & Materials
Dar Founded in 1956 Joined Sidara in 1986 Providing planning, design, management and consultancy for the world’s most important and exciting projects.
Areas of expertise – Communities – Mobility – Aviation – Healthcare – Water – Environmental Consultancy – Energy Transition Services – Planning & Strategy – Architecture & Design – Engineering – Environmental – Economics – Project & Construction Management
Physical Development Plan of the Western Sub-Region — Kuwait
New Administrative Capital — Egypt
Perkins&Will Founded in 1935 Joined Sidara in 1986 Award-winning, research based, inter-disciplinary architecture firm and the only Sidara business devoted exclusively to design.
Areas of expertise – Communities – Healthcare – Science & Technology – Aviation – Environmental Consultancy – Energy Transition Services – Architecture – Branded Environments – Interior Design – Landscape Architecture – Reuse and Transformation – Urban Design – Workplace Strategy
Life Sciences Building Seattle — Washington
North Carolina State University Gregg Museum of Art and Design — North Carolina, USA
TYLin Founded in 1954 Joined Sidara in 1989 One global company delivering world-class infrastructure through technical excellence and innovation.
Areas of expertise – Communities – Mobility – Aviation – Healthcare – Water – Environmental Consultancy – Energy Transition Services – Design – Program Management – Environmental Services – Construction Engineering & Inspection – Construction Management – MEP Engineering – Planning – Seismic Analysis & Design – Surveying
The Point — Utah, United States
Niagara Falls State Park Transformation Initiative — New York, USA
Formosa 4 Offshore Windfarm — Taiwan
Currie & Brown Founded in 1876 Joined Sidara in 2012 Global leader in project management, cost management, and advisory services for some of the world’s most technical and dynamic sectors.
Areas of expertise – Communities – Healthcare – Science & Technology – Aviation – Environmental Consultancy Services – Project Management – Cost Management – Advisory Services – Sustainable Design – Project Controls – Contract Management – Building Surveying
University Hospital Monklands — Airdrie, United Kingdom
Cayan Tower — Dubai, United Arab Emirates
Wood Founded in 1912 Joined Sidara in 2026 Working across the full lifecycle of complex industrial systems, trusted by clients as they navigate operational demands today while preparing for a lower‑carbon future.
Areas of expertise – Energy Security – Energy Transition – Materials Services – Advisory – Engineering – Project delivery – Asset management – Decarbonization – Digitalization
Delivering future‑ready asset life extension for a major operator — Australia
Low Carbon Hydrogen project — Bradford, UK
Tiris Uranium Project — Africa
Introba Formed in 2022 by the coming together of Integral Group – pioneers of deep green engineering – and Ross & Barruzini, a leading technology, security, and engineering firm, founded in 1953. One of the world’s largest building engineering and consulting firms with more than 1,000 employees in offices across North America, the United Kingdom, Serbia, and Australia.
Google Bay View — California, USA (Photo Credit: Iwan Baan/Google)
Areas of expertise – Communities – Healthcare – Science & Technology – Aviation – Environmental Consultancy – Healthcare Services – Engineering – Digital Advisory – Climate & Sustainability – Design Analytics – Medical Equipment Planning – Technology Systems
Lululemon Store Support Center — Vancouver, Canada
Landrum & Brown Founded in 1949 Joined Sidara in 2007
Areas of expertise – Aviation
Global specialist in aviation planning and development for over 70 years. Bringing passion and creativity to solve the most complex global aviation challenges.
Services – Activation Planning – Airfield & Airspace – Commercial Development – Environmental – Business & Finance – Ground Transportation – Master Planning & Strategy – Terminal Planning & Design
Chicago O’Hare International Airport — Chicago, USA
Charlotte Douglas International Airport — North Carolina, USA
Hangzhou Xiaoshan International Airport — Hangzhou, China
Maffeis Founded in 2000 Joined Sidara in 2013 Leading specialist in everything from stadia, bridges and ETFE structures to complex facades and intricate mechanical systems – specialising in projects that are structurally unique.
Coca-Cola Arena — Dubai, UAE
Areas of expertise – Communities – Mobility – Aviation – Energy Transition Services – ETFE Engineering – Facade Engineering – Tensile Structures – Special Steel Structures – Retractable Roofs – Bridges Engineering – Renewable Energies – Mechanical Systems – Structural Analysis
Al Janoub Stadium — Doha, Qatar
UK Pavilion, UK Pavilion, Expo 2020 — Dubai, UAE
Penspen Founded in 1954 Joined Sidara in 1990 Providing consulting, project, and engineering solutions. Penspen is helping countries access lower carbon fuels and extending the useful life of existing energy infrastructure to bring cleaner energy to people worldwide.
Low-Carbon Production Plant — United Kingdom
Areas of expertise – Energy Infrastructure – Digital Transformation Services – Engineering & Design – Project Management & Consultancy – Asset Management – Asset Integrity – Digital Solutions – Knowledge & Training
Hydrogen Blending Facility — Portugal
Sustainable Power Production — Africa
Connect with us Collaboration is core to our success and we’re here to help you find solutions to your most pressing challenges. Together, we can achieve more for our communities, change how people live, and inspire global impact. For more information, contact: inquiries@sidaracollaborative.com
150 Holborn — London, UK (Photo credit: Perkins&Will)
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