What Deerns does

Deerns is a privately-held Dutch engineering consultancy founded in 1928 and headquartered in The Hague, providing technical consulting and engineering solutions for high-performance buildings across the full lifecycle. The firm employs 750 staff across 17 offices in 10 countries (Netherlands, United Kingdom, France, Germany, Italy, Spain, India, Kuwait, Brazil, and broader LATAM) and serves six core verticals: Airports, Healthcare, Life Sciences, Electronics (including semiconductors), Data Centres, and Real Estate. Its service portfolio centres on mechanical and electrical (MEP) design, building physics, sustainability and energy transition advisory, and Computational Parametric Design (CPD) — a proprietary simulation capability leveraging climate data from 17,000+ global weather stations to optimise 1,000+ design variants daily.

The business operates as a project-based B2B professional services firm, generating revenue through consulting fees for engineering engagements rather than software licences or product sales. Notable client engagements include Amsterdam Airport Schiphol (144+ aircraft stands with Preconditioned Air systems targeting emissions-free operations by 2030), Radboud UMC (smart hospital design), NXP Semiconductors, STMicroelectronics, Infineon Technologies, Global Wafers, Equinix ML5 (Italy), IMEC, and Thales Alenia Space, with historical involvement in approximately 45% of Dutch general hospitals and all eight Dutch university hospitals. Distribution is exclusively direct enterprise sales through country and sector directors, supplemented by thought leadership content, industry events (MIPIM, DCD), and partnerships (e.g., co-leading the EU-financed Net Zero Carbon Renovation Europe programme with Alliance HQE-GBC and AIA Environnement). Pricing is not publicly disclosed, consistent with bespoke consultancy engagements. The firm is privately held with no disclosed parent company, subsidiaries, or institutional investors, and has received FD Gazellen International recognition (2026) and FD Gazelle (2025) from Het Financieele Dagblad for sustained growth and international operations.

Name

Deerns

Legal name

Deerns

Website

https://deerns.com

Company type

Private

Founded year

1928

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Deerns is a privately-held Dutch engineering consultancy providing MEP design, building physics, sustainability advisory, and computational parametric design services for high-performance buildings across airports, healthcare, life sciences, electronics, data centres, and real estate in 10 countries.

Ownership category

akta.pro rank

Headquarters

HQ city

Den Haag

HQ country

Netherlands

HQ region

Europe

Offices9 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Deerns provides technical consulting and engineering solutions for buildings across the entire lifecycle. Revenue is generated through professional services engagements, likely project-based consulting fees for MEP design, building physics, sustainability advisory, and engineering services.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Deerns provides end-to-end technical consulting and engineering solutions for high-performance buildings across six vertical sectors: Airports, Data Centres, Electronics (including semiconductors), Life Sciences, Healthcare, and Real Estate. The firm delivers integrated multidisciplinary services spanning the entire building lifecycle, including MEP design, building physics, sustainability advisory, computational parametric design (CPD), and smart hospital technology integration. Their 750 staff in 17 offices across 10 countries combine deep sector expertise with digital design tooling to support complex, sustainable building projects for enterprise and institutional clients.

Product overview

Deerns is an engineering consultancy firm providing integrated technical consulting and engineering solutions for high-performance buildings across six core market sectors: Airports, Data Centres, Electronics (including semiconductors), Life Sciences, Healthcare, and Real Estate. The firm operates a single unified service offering rather than a modular software platform, delivering end-to-end services spanning strategic consulting, MEP design, building physics, sustainability, and computational parametric design (CPD). Deerns employs 750 staff across 17 offices in 10 countries and combines multidisciplinary expertise to deliver complex, sustainable building projects worldwide. Key service pillars include MEP Design Services, Building Physics Services, Sustainability and Energy Transition Services, Computational Parametric Design Services, and Smart Hospital Technology Integration. The firm does not offer a distinct software product but rather delivers engineering expertise as a service.

Differentiator

Problem solved

Functional benefit

Products and services

• Technical Consulting and Engineering Solutions for High-Performance Buildings
• MEP Design Services
• Building Physics Services
• Sustainability and Energy Transition Services
• Computational Parametric Design (CPD) Services
• Data Centre Engineering and Consulting Services
• Electronics and Semiconductor Facility Engineering Services
• Life Sciences Facility Engineering Services
• Healthcare Facility Engineering and Smart Hospital Services
• Airport Infrastructure Engineering Services
• Real Estate Engineering and Sustainability Services
• Smart Hospital Technology Integration

Quantifiable outcome

• 45% of the 100 general hospitals in the Netherlands as well as all eight university hospitals have been designed by Deerns
• +3 more outcomes

Named customers20 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered minor and core.

• Data Centre Dynamics (DCD)minorGTM or Marketing Partner · 26 September 2023Co-exhibitor and panel participant at DCD>Connect Cancun 2023 and DCD>Latam Awards judge participation. Deerns experts participate in industry discussions on data centre capacity challenges.
• Amsterdam Airport SchipholcoreStrategic or Co-development PartnerPartnership to design and integrate Preconditioned Air (PCA) units at 144 aircraft stands with the goal of achieving an emissions-free airport by 2030. Deerns leverages expertise in apron design and future-ready airports to create solutions improving operational efficiency and working conditions.
• Alliance HQE-GBCcoreStrategic or Co-development PartnerJoint leadership of Net Zero Carbon Renovation Europe programme, focused on accelerating decarbonisation of existing buildings through large-scale renovation. Part of EU-financed BuildingLife project.
• AIA EnvironnementcoreStrategic or Co-development PartnerCo-leader of Net Zero Carbon Renovation Europe programme with Deerns and Alliance HQE-GBC, assessing and promoting low-carbon strategies in renovation projects across Europe.
• World Green Building CouncilminorStrategic or Co-development PartnerSupporting the Net Zero Carbon Renovation Europe programme with global green building expertise.
• BroekbakemaminorImplementation/ SI/ Consulting PartnerArchitecture firm partnership for TU/e cleanroom project. Broekbakema handles architectural design while Deerns provides technical engineering.
• AronsohnminorImplementation/ SI/ Consulting PartnerStructural engineering partner for TU/e cleanroom project, collaborating on building structure design.
• PeutzminorImplementation/ SI/ Consulting PartnerConsulting partner for TU/e cleanroom project handling building physics, fire safety, vibrations, and acoustics.
• Delft University of TechnologyminorStrategic or Co-development PartnerMulti-year partnership for research and development collaboration in technical building services and sustainability.

Scale indicators8 records

Recent moves3 records

Expansion highlights5 records

Market position

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/deernsgroup
• Xx.com/deernsgroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles28 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 Deerns