Ingenieurbüro GEHLEN

What Ingenieurbüro GEHLEN does

Ingenieurbüro GEHLEN is a German structural engineering consultancy founded in 1915 by Dipl.-Ing. Paul Gehlen, operating today as a partnership (Partnerschaft mbB) headquartered in Düsseldorf with a second office in Wuppertal. The firm delivers structural engineering (Tragwerksplanung), independent technical building inspection (Bautechnische Prüfung), fire protection concepts and inspection (Brandschutz), building physics (Bauphysik), object planning for traffic and hydraulic engineering, and certified expert opinions across all HOAI service phases for both new construction and existing buildings. All partners hold state-certified Prüfingenieur qualifications for structural stability and/or fire protection, which the firm describes as a unique configuration in North Rhine-Westphalia. A dedicated fire protection subsidiary, GEHLEN Brandschutz Partnerschaft mbB, was established in 2016.

The firm serves construction and real estate developers, industrial companies, the public sector, and water management authorities across North Rhine-Westphalia and select national projects. Disclosed engagements include the trivago headquarters in Düsseldorf Medienhafen, Hotel Borussiapark for Borussia VfL 1900 Mönchengladbach, Universität Düsseldorf Campus Biowissenschaften, the Hydro Aluminium Automobillinie 3 production line, and the Schiffsschleusenanlage Fankel waterway lock. Revenue is generated through project-based professional service fees structured under the HOAI fee ordinance, with engagements spanning multi-year construction timelines. The firm employs 60+ specialists and conducts BIM pilot implementations in infrastructure projects.

Ownership is concentrated among the partner group, with Prof. Dipl.-Ing. Balthasar Gehlen (grandson of the founder) maintaining family continuity. No external institutional investors, private equity ownership, or public listing is evidenced. The firm markets primarily through its website project portfolio, LinkedIn and Facebook presence, and earned media coverage in outlets such as Wirtschaftsforum. A dedicated careers portal supports ongoing recruitment.

Name

Ingenieurbüro GEHLEN

Legal name

GEHLEN Partnerschaft Beratender Ingenieure mbB

Website

https://gehlen-ing.de

Company type

Private

Founded year

1915

Operating status

Operating

Headcount range

11–50 employees

Short description

Ingenieurbüro GEHLEN is a Düsseldorf-based structural engineering consultancy founded in 1915, serving construction, industrial, and public-sector clients across North Rhine-Westphalia with structural planning, building inspection, fire protection, and building physics services delivered by certified Prüfingenieure.

Ownership category

akta.pro rank

Product category

Structural Engineering Services

NAICS

Engineering Services (541330), Engineering Services (54133), Building Inspection Services (54135), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industries

Construction Engineering & Constructability Consulting (BPAHAIAN), Construction Program Management (Multi-site/Portfolio) (IMAFAAAF)

Keywords

• Structural engineering services
• Fire protection consulting
• Building physics services
• Construction technical inspection
• Engineering partnership consultancy

Headquarters

HQ city

Düsseldorf

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Professional engineering services billed according to HOAI (Honorarordnung für Architekten und Ingenieure) fee structures. Services include structural planning, building inspection, fire protection, building physics, expert opinions, and object planning. Revenue generated through project-based fees for services across all phases of construction projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Ingenieurbüro GEHLEN is a German engineering consultancy providing Tragwerksplanung (structural planning), Bautechnische Prüfung (independent structural inspection by certified Prüfingenieure), Brandschutz (fire protection concepts and inspection), and Bauphysik (building physics including thermal, acoustic, and energy efficiency services). The firm serves both new construction and existing buildings across all HOAI service phases (1–9), delivering engineering expertise as a contracted consulting service to public agencies, private developers, industrial clients, and architectural partners in North Rhine-Westphalia and across Germany.

Product overview

Ingenieurbüro GEHLEN operates as a civil and structural engineering firm consisting of two main divisions: GEHLEN Partnerschaft mbB (structural engineering) and GEHLEN Brandschutz Partnerschaft mbB (fire protection). The company offers a comprehensive portfolio of engineering services including Tragwerksplanung (structural engineering), Bautechnische Prüfung (structural testing), Objektplanung (object planning), Bauphysik (building physics), and comprehensive Brandschutz services. Services span all project phases from feasibility studies through construction supervision. The firm specializes in both new construction and existing building projects, serving as both creator and independent verifier of structural plans. With over 60 employees and four active Prüfingenieure (certified testing engineers), the company provides specialized expertise in structural stability verification, fire protection inspection, and building physics assessments.

Differentiator

Problem solved

Functional benefit

Products and services

• Tragwerksplanung (Structural Engineering) Creation and verification of structural analyses for all building types and structural systems across all HOAI service phases (1–9), covering new construction and existing buildings and ensuring load-bearing capacity, economy, and serviceability. Delivered by state-certified Prüfingenieure für Baustatik and serves construction companies, real estate developers, industrial operators, and public-sector clients.
• Bautechnische Prüfung (Building Technical Inspection) Independent technical verification of structural designs by certified Prüfingenieure für Baustatik, providing official quality assurance for new construction and existing building projects. The firm operates the largest Prüfingenieur capacity in North Rhine-Westphalia with four active Prüfingenieure, serving construction companies, developers, and public agencies.
• Objektplanung (Object Planning for Engineering Structures) Complete object planning services for engineering structures in traffic construction and hydraulic engineering, including design, permit planning, execution planning, cost estimation, tendering, and construction management. Targeted at infrastructure clients (waterway authorities, transportation agencies) and developers of engineering structures (locks, bridges, hydraulic works).
• Gutachten zur Standsicherheit (Structural Stability Expert Opinions) Expert assessments and structural stability evaluations for compliance with technical standards, damage evaluation, and condition surveys before construction activities. Used by property owners, courts, insurers, and public agencies needing independent expert opinions on existing structures.
• Bauphysik (Building Physics) Building physics services covering thermal insulation verification, acoustic insulation certification, energy certificates, moisture protection calculations, ventilation concepts, and energy efficiency consulting for KfW/BAFA funding programs. Targets developers, architects, and property owners needing compliance with energy regulations and access to federal subsidies.
• Brandschutzkonzepte (Fire Protection Concepts) Development of comprehensive fire protection concepts and verification of fire protection plans for compliance with building regulations, covering both new construction and existing buildings. Delivered for developers, architects, and property owners requiring regulatory fire-protection approvals.
• Brandschutztechnische Prüfung (Fire Protection Technical Inspection) Fire protection technical inspection and verification conducted by certified Prüfingenieure für Brandschutz, providing official third-party fire-protection approvals for construction projects. Required by authorities for compliance and used by developers, architects, and public clients needing certified fire-protection verification.
• Sachverständigen Gutachten (Expert Opinions) Expert opinions and assessments provided by certified experts for building damage (including fire and explosion damage), structural integrity, and regulatory compliance verification. Used by property owners, courts, insurers, and public agencies needing independent expert assessment of buildings.
• Objektplanung / Fachbauleitung (Specialist Construction Management) Specialist construction management and site supervision ensuring proper execution of construction projects according to plans and specifications. Provided to developers, construction companies, and public clients running complex structural or infrastructure projects.

Quantifiable outcome

• Over 100 years of continuous operation as engineering firm in Düsseldorf
• +1 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• AWADO Rechtsanwaltsgesellschaft mbHminorOthersCollaboration for whistleblower system (Hinweisgebersystem 360) to provide secure reporting channel for employees, customers and third parties regarding suspected criminal activity, legal violations or regulatory breaches. The firm's trusted lawyers handle reports confidentially.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• BuroHappold Engineering: International engineering consultancy providing structural, fire, and building-physics services to architectural and developer clients. Comparable as a multidisciplinary engineering peer targeting similar complex-building projects as GEHLEN.
• WSP in Deutschland: WSP's German engineering practices (including formerly WGH and KREBS+KIEFER) provide structural engineering and building physics services in the German market. Comparable as a scaled, multi-region competitor with overlapping HOAI-style structural services.
• Arup: Global engineering consultancy offering structural engineering, fire protection, and building physics among many other disciplines. Comparable in offering full HOAI-equivalent service bundles, but at vastly larger scale and international footprint.

Direct peers

• Werner Sobek: Stuttgart-based engineering firm specializing in structural engineering, facade engineering, and sustainability consulting for complex buildings. Comparable in offering high-end structural-engineering services to architects and developers across Germany.
• KREBS+KIEFER: German engineering consultancy specializing in structural engineering, building physics, and construction supervision for public and private clients. Comparable as a mid-sized German structural and civil engineering firm with similar service mix and Prüfingenieur capability.
• Schlaich Bergermann Partner: Berlin/Stuttgart structural engineering consultancy famous for bridges, lightweight structures, and complex engineering works. Comparable in delivering certified structural engineering and inspection services on high-profile German infrastructure and architectural projects.
• Kempen Krause Ingenieure: Düsseldorf-based structural engineering and Prüfingenieur firm providing Tragwerksplanung, building inspection, and fire protection services. Closest regional head-to-head competitor in Düsseldorf offering the same Prüfingenieur-certified service portfolio.
• Bollinger + Grohmann: Frankfurt-based structural engineering consultancy offering Tragwerksplanung, building physics, and fire protection services across Germany and internationally. Closest comparable in terms of services offered, project scale, and German engineering-partnership culture.

Regional players

• HPP Architekten: Düsseldorf-based architecture firm with deep NRW roots that frequently partners with structural engineering consultancies. Comparable as a regional Düsseldorf incumbent whose project pipeline overlaps with GEHLEN's structural-engineering client base.
• IGB Ingenieurgesellschaft Bär mbH: NRW-based structural and civil engineering firm offering Tragwerksplanung and Prüfingenieur services. Comparable as a regional NRW engineering competitor targeting similar public-sector and developer clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/gehleningenieur
• LinkedInlinkedin.com/company/gehlen-ing

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

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 Ingenieurbüro GEHLEN