Eckersley O'Callaghan
Eckersley O'Callaghan is a London-founded, global engineering consultancy providing structural, facade, and civil engineering services to architects, developers, and institutional clients on complex, award-winning buildings worldwide.
- Company typePrivate
- Founded2004
- HeadquartersLondon, United Kingdom
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Eckersley O'Callaghan does
Eckersley O'Callaghan is a privately held global engineering consultancy founded in 2004 and headquartered in London. The firm specializes in structural and facade engineering, delivering services for complex, high-profile construction and renovation projects worldwide. Its client base spans architects, real estate developers, educational institutions, healthcare providers, luxury retailers, and cultural organizations, with a marquee portfolio that includes Apple retail stores globally, the Zayed Centre for Research at Great Ormond Street Hospital, the twin Shum Yip Towers in Shenzhen, Brookfield's Manhattan West podium, and academic buildings for Oxford colleges.
The company's core offerings include structural engineering (steel, concrete, timber, hybrid systems, and structural glass), facade engineering (curtain walls, glazing systems, rainscreen cladding, facade access and maintenance), civil engineering (foundations, drainage, SUDs), and digital design services supported by BIM tools such as Revit and Rhinoceros. A proprietary differentiator is the EOC ECO2 tool, used internally to track and optimize embodied carbon values through design development. The firm also holds specialized expertise in carbon fibre structures and large-format structural glass installations. The firm operates from legal entities in the UK (Eckersley O'Callaghan Limited), the United States (Eckersley O'Callaghan & Partners LLC), France (Eckersley O'Callaghan SARL), and China (Shanghai Eckersley O'Callaghan Structural Design Consulting Co Ltd), with offices across London, Paris, New York, Los Angeles, Hong Kong, Shanghai, Delhi NCR, and Sydney.
Commercially, Eckersley O'Callaghan operates as a professional services consultancy on a project-based fee model, securing work through design competitions, direct appointments, and repeat client engagements. Pricing is not publicly disclosed and is determined by scope, complexity, and duration of each engagement. The firm has been recognized through industry awards including the 2025 Building Magazine Top 150 Consultants ranking, 2024 Building Innovation Award for Most Innovative SME, 2024 Facade Design and Engineering Award (International New Build), and the 2023 Structural Timber Award Winner of Winners, and projects it has engineered have achieved BREEAM Excellent, BREEAM Outstanding, and LEED Gold certifications.
Eckersley O'Callaghan firmographics
Firmographics- Name
- Eckersley O'Callaghan
- Legal name
- Eckersley O'Callaghan Ltd
- Website
- https://eocengineers.com
- Company type
- Private
- Founded year
- 2004
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Eckersley O'Callaghan is a London-founded, global engineering consultancy providing structural, facade, and civil engineering services to architects, developers, and institutional clients on complex, award-winning buildings worldwide.
- Ownership category
- akta.pro rank
Eckersley O'Callaghan industry classification
Industry- Product category
- Structural and Facade Engineering Consultancy
- NAICS
- Architectural, Engineering, and Related Services (5413), Structural Steel and Precast Concrete Contractors (238120)
- SIC
- Services-Engineering Services (8711)
- akta.pro primary industry
- Civil & Structural Engineering Consulting (BPAHAIAA)
- akta.pro secondary industries
- Architectural Glazing & Fenestration (Curtain Wall, Windows, Storefronts, Skylights) (IMAFAMAC), Office & Corporate Building Construction (IMAFACAA)
Keywords
Where Eckersley O'Callaghan is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices8 records
Markets served
Eckersley O'Callaghan business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Engineering Consultancy Services: Professional engineering services provided to clients on construction and development projects. Revenue is generated through fee-based consultancy contracts for structural engineering, facade engineering, and civil engineering services on specific projects.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Eckersley O'Callaghan product offering
Product offeringCore offering
Eckersley O'Callaghan is a global engineering consultancy delivering structural and facade engineering services for complex building projects. The firm designs structural systems in steel, concrete, timber, and structural glass, alongside building envelope solutions including curtain walls, glazing, and rainscreen cladding. It supplements these with civil engineering, digital design (BIM/Revit/Rhino), and facade access & maintenance (FAM) consulting for architects, developers, and institutions worldwide.
Product overview
Eckersley O'Callaghan is a global engineering consultancy offering structural engineering and facade engineering as its primary services, supplemented by civil engineering, digital design capabilities, and facade access & maintenance services. The company works on complex building projects globally, providing engineering for new-build, renovation, and adaptive reuse projects across commercial, residential, cultural, educational, and healthcare sectors. The core offerings include structural design, facade engineering, civil engineering, and specialist glass structures, with digital design tools like BIM and proprietary carbon tracking (EOC ECO2) supporting project delivery.
Differentiator
Problem solved
Functional benefit
Products and services
- Structural Engineering Services
- Facade Engineering Services
- Civil Engineering Services
- Digital Design Services
- Facade Access & Maintenance (FAM) Services
- Specialist Glass and Facade Structures
Quantifiable outcome
- Projects have achieved BREEAM Excellent and Outstanding ratings
- +2 more outcomes
Companies that use Eckersley O'Callaghan
Customer profileNamed customers17 records
Segments3 records
Ideal customer profiles3 records
Eckersley O'Callaghan technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Eckersley O'Callaghan partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights5 records
Eckersley O'Callaghan competitors and assessment
Company assessmentDirect peers
- Arup: Global engineering consultancy with leading structural, facade, and civil engineering practices. Arup is the most established direct competitor to EOC in complex structural and facade engineering, particularly on landmark buildings.
- Buro Happold: International multidisciplinary engineering consultancy with deep structural engineering and facade capabilities. Directly comparable to EOC in delivering complex, design-led building projects for architects and developers.
- Thornton Tomasetti: US-headquartered engineering firm specialising in structural engineering, facade engineering, and applied science. Direct peer in facade access/maintenance, structural glass, and complex facades.
- Werner Sobek: Stuttgart-based structural engineering practice with a strong sustainability and innovation focus. Comparable to EOC in delivering ultra-lightweight, sustainable structural designs on signature buildings.
- Meinhardt Group: Asia-headquartered engineering consultancy with strong facade and structural engineering capabilities. A direct peer in facade engineering, particularly across Asia Pacific, the Middle East, and Australia where EOC also operates.
- Simpson Gumpertz & Heger (SGH): US engineering firm specialising in structural engineering, building envelope, and applied science. Direct peer in facade engineering and structural glass, with comparable project profiles on signature US buildings.
Broad incumbents
- WSP: Global professional services firm with a large engineering practice including structural and facade engineering. Competes with EOC on large multi-disciplinary mandates, but as part of a much broader services portfolio.
- Mott MacDonald: Global engineering, management, and development consultancy with structural and building services capabilities. A broad incumbent that often bundles services on large projects where EOC competes as a specialist.
Emerging players
- Robert Bird Group: Specialist structural and civil engineering consultancy with strong presence in Australia, the Middle East, and the UK. Comparable in its focus on complex structural design and signature building projects, though with less facade focus than EOC.
- Front Inc: Boutique facade engineering consultancy with a focus on complex building envelopes. A niche peer in facade engineering and curtain wall design, competing with EOC for high-end, architecturally ambitious projects.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Eckersley O'Callaghan social profiles
Digital presenceEckersley O'Callaghan compliance and trust
Trust signalCompliance11 records
Eckersley O'Callaghan financial estimates
Financial estimateRevenue estimate
Valuation estimate
Eckersley O'Callaghan leadership team
Management profileNumber of profiles
Profiles8 records
Eckersley O'Callaghan funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Eckersley O'Callaghan M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Eckersley O'Callaghan
What does Eckersley O'Callaghan do?
Eckersley O'Callaghan is a global engineering consultancy delivering structural and facade engineering services for complex building projects. The firm designs structural systems in steel, concrete, timber, and structural glass, alongside building envelope solutions including curtain walls, glazing, and rainscreen cladding. It supplements these with civil engineering, digital design (BIM/Revit/Rhino), and facade access & maintenance (FAM) consulting for architects, developers, and institutions worldwide.
Is Eckersley O'Callaghan a public or private company?
Eckersley O'Callaghan is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Eckersley O'Callaghan founded?
Eckersley O'Callaghan was founded in 2004. It employs 51 to 100 people.
Where is Eckersley O'Callaghan based?
Eckersley O'Callaghan is headquartered in London, United Kingdom, in the Europe region.
How does Eckersley O'Callaghan make money?
One revenue line is on record: engineering Consultancy Services.
Who are Eckersley O'Callaghan's main competitors?
Direct peers on record are Arup, Buro Happold, Thornton Tomasetti, Werner Sobek, Meinhardt Group and Simpson Gumpertz & Heger (SGH). Broad incumbents are WSP and Mott MacDonald. Emerging players are Robert Bird Group and Front Inc.
Does Eckersley O'Callaghan have an API?
No public API is recorded for Eckersley O'Callaghan.
What industry is Eckersley O'Callaghan in?
Eckersley O'Callaghan's product category is Structural and Facade Engineering Consultancy. Its primary akta.pro industry code is BPAHAIAA, Civil & Structural Engineering Consulting, with a secondary code of IMAFAMAC, Architectural Glazing & Fenestration (Curtain Wall, Windows, Storefronts, Skylights). Its NAICS code is 5413 and its SIC code is 8711.