Grontmij A S
Grontmij A/S was a Denmark-based architecture, engineering, and advisory consulting firm founded in 1915 that was acquired by Sweco in 2015 and integrated into Sweco Danmark A/S, serving public sector and enterprise clients across construction, infrastructure, water, and energy.
- Company typePublic
- Founded1915
- HeadquartersGlostrup, Denmark
- Headcount5,001–10,000
- GTM typeB2B
- OfferingServices
What Grontmij A S does
Grontmij A/S was a Denmark-based consulting and engineering firm originally founded in 1915 (per firmographic records) and headquartered in Glostrup. The company operated within the professional services sector, delivering project-based consulting in architecture, engineering, and advisory across construction, transport/infrastructure, and water/energy/industry verticals, serving both public sector clients and enterprise customers. Its business model centered on multi-year, quote-driven project engagements delivered through local offices, with pricing tied to scope, complexity, and duration.
Pre-acquisition, Grontmij pursued an active inorganic growth strategy, completing at least five acquisitions between 2006 and 2008 (BGS Gesellschaften, CANOR International, Whitelaw Turkington Landscape Architects, Stoel Partners, Libost Groep) to extend its European footprint and capability set. In 2015, Grontmij was acquired by Sweco, the Swedish engineering consultancy listed on Nasdaq Stockholm (ticker SWECO B). Following the acquisition, Grontmij A/S ceased to operate as an independent entity; its Danish operations were integrated into Sweco Danmark A/S (CVR 48233511), which now operates 17 offices across Denmark as part of Sweco Group's 23,000-employee, 17-country European network generating approximately 32 billion SEK (2.9 billion EUR) in 2025 consolidated revenue.
The integrated Danish entity today delivers services spanning building design, geotechnics, acoustics, fire safety, commissioning, CSRD/ESRS compliance, LCA/EPD services, transport infrastructure (rail, metro, bridges, ports), water/energy/industry consulting, and proprietary digital solutions (Digitalt byggeri, Den Digitale Renoveringsplan, Software by Sweco). Go-to-market is sales-led, project-based, and anchored by multi-year contracts with government clients (e.g., DSB for Østerport Station modernization) and enterprise real estate developers (e.g., UN17 Village project, 535 homes in Ørestad). Customer concentration, pricing, and revenue data are not disclosed at the legacy Grontmij entity level, making standalone economic assessment infeasible.
Grontmij A S firmographics
Firmographics- Name
- Grontmij A S
- Legal name
- Sweco Danmark A/S
- Website
- https://grontmij.dk
- Company type
- Public
- Founded year
- 1915
- Operating status
- Acquired
- Headcount range
- 5,001–10,000 employees
- Short description
- Grontmij A/S was a Denmark-based architecture, engineering, and advisory consulting firm founded in 1915 that was acquired by Sweco in 2015 and integrated into Sweco Danmark A/S, serving public sector and enterprise clients across construction, infrastructure, water, and energy.
- Ownership category
- akta.pro rank
Grontmij A S industry classification
Industry- Product category
- Engineering & Architecture Consulting
- NAICS
- Architectural, Engineering, and Related Services (5413), Engineering Services (54133), Management, Scientific, and Technical Consulting Services (5416)
- SIC
- Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- ESG, Sustainability Reporting & Compliance (BPAEAPAM)
Keywords
Where Grontmij A S is headquartered
LocationHeadquarters
- HQ city
- Glostrup
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
Grontmij A S business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Consulting Services Revenue: Professional consulting services in architecture, engineering, and advisory across multiple sectors including construction, water/energy/industry, and transport/infrastructure. Revenue generated through project-based consulting engagements from ideation through to operation.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based professional services |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels5 records
Grontmij A S product offering
Product offeringCore offering
Grontmij A/S (now part of Sweco Danmark A/S) is a consulting and engineering firm delivering integrated architecture, engineering, and advisory services across building/construction, water/energy/industry, and transport/infrastructure sectors. Engagements span the full project lifecycle — from ideation and design through construction, operation, and digital renovation — supported by proprietary software and digital construction tools.
Differentiator
Problem solved
Functional benefit
Products and services
- Byggeri (Building & Construction Consulting) Multi-disciplinary building and construction consulting practice offering architecture, engineering, sustainability, and operational advisory for public and private sector building clients across the full project lifecycle.
- Sweco Architects Dedicated architectural practice delivering planning and design services across residential, commercial, leisure, landscape, urban planning, retail/logistics, space planning, transformation, and education sectors.
- Vand, Energi og Industri (Water, Energy & Industry Consulting) Environmental and industrial consulting practice covering energy transition, water management, biodiversity, industrial processes, pharma, and sector coupling for utility, industrial, and public-sector clients.
- Transport og Infrastruktur (Transport & Infrastructure Consulting)
- Digitale løsninger (Digital Solutions)
- LCA og EPD Services
- Sikkerhed og Forsvar (Security & Defense)
Companies that use Grontmij A S
Customer profileNamed customers2 records
Segments4 records
Ideal customer profiles3 records
Grontmij A S technology and API
TechnologyTechnology focussed No
API detail
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Grontmij A S partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core and flagship.
- BUILD at Aalborg UniversitycoreAcademic partnership with BUILD at Aalborg University for research on housing rotation and urban development. Joint research reports on housing mobility and sustainable urban planning.
- Det Planetære Projekt (The Planetary Project)flagshipInternal strategic initiative focused on sustainable development aligned with UN Sustainable Development Goals, integrating sustainability into all consulting engagements.
Scale indicators4 records
Recent moves6 records
Expansion highlights3 records
Grontmij A S competitors and assessment
Company assessmentBroad incumbents
- Stantec Inc. Stantec is a North American-headquartered global engineering, architecture, and environmental services firm expanding in Northern Europe, competing for similar buildings, water, and infrastructure design mandates.
- Jacobs Solutions Inc. Jacobs is a global engineering, technical, scientific, and consulting services firm with overlapping capabilities in infrastructure, water, transportation, and advanced facilities. Competes for large European public and private sector engineering mandates.
- Tetra Tech Inc. Tetra Tech is a global consulting and engineering firm focused on water, environment, and sustainable infrastructure, competing for overlapping European water management and environmental advisory mandates.
- WSP Global: WSP is one of the world's largest professional services firms in engineering and consulting, competing with Sweco Group for large-scale European infrastructure, buildings, environment, and transport mandates through its broad global platform.
- Mott MacDonald: Mott MacDonald is a UK-headquartered global engineering, management, and development consultancy with deep overlap in transport, water, buildings, and energy consulting services across European markets.
Direct peers
- Arcadis NV: Arcadis is a global design, engineering, and consulting firm headquartered in the Netherlands with strong sustainability, mobility, and water practices. Direct overlap with Sweco's European architecture, engineering, and advisory portfolio.
- Sweco Group: Sweco Group is the parent entity that acquired Grontmij A/S in 2015. As the current operating parent, Sweco Group directly mirrors Grontmij's architecture, engineering, and advisory consulting model across Europe with 23,000 employees and ~€2.9B in 2025 revenue.
- AFRY (ÅF Group): AFRY is a Swedish-based engineering and design consultancy with similar Nordic roots across infrastructure, water, energy, industrial, and digital services. Direct competitor to Sweco Group across Scandinavian markets.
- COWI A/S: COWI is a major Danish engineering consultancy with deep overlap in bridges, tunnels, buildings, water, environment, and transport infrastructure, competing head-to-head with Sweco Danmark / former Grontmij on Nordic and European projects.
- Ramboll Group: Ramboll is a Denmark-headquartered engineering, architecture, and consulting firm with comparable service lines across buildings, transport, water, environment, and energy. Direct competition for the same Nordic public and private sector clients.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Grontmij A S social profiles
Digital presenceGrontmij A S financial estimates
Financial estimateRevenue estimate
Valuation estimate
Grontmij A S leadership team
Management profileNumber of profiles
Profiles2 records
Grontmij A S funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Grontmij A S M&A and investment
M&A and investmentM&A5 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Grontmij A S
What does Grontmij A S do?
Grontmij A/S (now part of Sweco Danmark A/S) is a consulting and engineering firm delivering integrated architecture, engineering, and advisory services across building/construction, water/energy/industry, and transport/infrastructure sectors. Engagements span the full project lifecycle — from ideation and design through construction, operation, and digital renovation — supported by proprietary software and digital construction tools.
Is Grontmij A S a public or private company?
Grontmij A S is a public company. It is classified as corporate owned and is currently acquired.
When was Grontmij A S founded?
Grontmij A S was founded in 1915. It employs 5,001 to 10,000 people.
Where is Grontmij A S based?
Grontmij A S is headquartered in Glostrup, Denmark, in the Europe region.
How does Grontmij A S make money?
One revenue line is on record: consulting Services Revenue.
Who are Grontmij A S's main competitors?
Broad incumbents on record are Stantec Inc., Jacobs Solutions Inc., Tetra Tech Inc., WSP Global and Mott MacDonald. Direct peers are Arcadis NV, Sweco Group, AFRY (ÅF Group), COWI A/S and Ramboll Group.
What industry is Grontmij A S in?
Grontmij A S's product category is Engineering & Architecture Consulting. Its primary akta.pro industry code is BPAEAPAM, ESG, Sustainability Reporting & Compliance. Its NAICS code is 5413 and its SIC code is 8711.