Ingenieurbüro Klemm & Hensen GmbH

What Ingenieurbüro Klemm & Hensen GmbH does

Ingenieurbüro Klemm & Hensen GmbH is an independent, owner-managed German engineering and architectural planning firm headquartered in Leipzig, founded in 1991 by Günter Klemm and Klaus Hensen, with current managing directors Kathrin Klemm and Maximilian Schäfer. The firm delivers interdisciplinary planning services across ten integrated practice areas: water management (Wasserwirtschaft), traffic engineering (Verkehr), environmental planning (Umwelt), architecture (Architektur), structural engineering (Tragwerke), surveying (Vermessung), project management (Projektsteuerung), software development (Softwareentwicklung), Building Information Modeling (BIM), and complex projects (Komplexprojekte). Services span all HOAI Leistungsphasen 1-9 and are backed by a dense stack of certifications including ISO 9001:2015 (since 2009), IPMA project management, DWA canal renovation, SiGeKo coordination, VFIB structural inspection, MVAS 99 roadwork safety, and buildingSMART openBIM qualification. The firm employs 60+ professionals across disciplines and operates four offices in Saxony, Thuringia, and Saxony-Anhalt.

The firm's core technology stack centers on buildingSMART-certified openBIM methodology with 3D modeling and digital twin capabilities, complemented by custom-developed database-driven GIS/FIS software for engineering data management. Domain-specific proprietary products include the Gewässerunterhaltsabgabenberechnung system for water-body maintenance fee calculation and an EFRE-funded Kanalplanungs-Software with five modules (canal planning, pipeline planning, canal cadastre, canal renovation, canal special structures). Digital surveying capability is provided through GNSS rovers, terrestrial laser scanners, and drone-based photogrammetric data collection. The firm collaborates with HTWK Leipzig's DigiTransSachs research group on BIM methodology development.

The business model is project-based professional services billed under HOAI fee structures for German engineering and architectural work, plus ancillary certified advisory services (IPMA project management, DWA canal renovation consulting, SiGeKo coordination, structural engineering certification). The go-to-market is direct enterprise field sales to municipalities, state agencies, public-law corporations, and select private enterprises, primarily through public tenders and direct commission. The customer base is entirely public-sector, spanning city administrations (Stadt Leipzig, Große Kreisstadt Döbeln, Stadt Zwenkau), state dam and water administrations (Landestalsperrenverwaltung Sachsen), regional governments (Land Brandenburg, Landkreis Elbe-Elster), airport authorities (Flughafen Leipzig/Halle GmbH), municipal utilities (Kommunale Wasserwerke Leipzig), and special-purpose public associations. Marketing is conducted primarily through professional chamber memberships (Ingenieurkammer Sachsen, Architektenkammer, DWA, VFIB, buildingSMART), project references, and word-of-mouth rather than broad campaigns.

Name

Ingenieurbüro Klemm & Hensen GmbH

Legal name

Ingenieurbüro Klemm & Hensen GmbH

Website

https://klemm-hensen.de

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

Ingenieurbüro Klemm & Hensen GmbH is an owner-managed German engineering and architectural planning firm founded in 1991, serving municipalities, state agencies, and public corporations across Saxony, Thuringia, and Saxony-Anhalt with interdisciplinary services spanning water, traffic, environmental, structural, surveying, BIM, and project management.

Ownership category

akta.pro rank

Product category

Engineering and Architectural Planning Services

NAICS

Architectural, Engineering, and Related Services (5413), Engineering Services (541330), Landscape Architectural Services (54132)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industries

Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK), Sustainable/Green Building & LEED Consulting (BPAHAKAG)

Keywords

• Civil engineering services
• BIM planning
• Water management engineering
• Traffic infrastructure planning
• Structural engineering services

Headquarters

HQ city

Leipzig

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Architectural Planning Services: The company generates revenue through professional engineering and architectural services billed per HOAI (Honorarordnung für Architekten und Ingenieure) service phases. Services span water engineering, traffic infrastructure, structural engineering, environmental planning, surveying, project management, software development, and BIM. Revenue is project-based with services across Leistungsphasen 1-9.
2. Consulting and Advisory Services: Certified consulting services including project management (IPMA), canal renovation advisory (DWA), structural engineering certification, and SiGeKo coordination, billed as part of overall project engagements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Ingenieurbüro Klemm & Hensen GmbH is an independent, owner-managed engineering and architecture planning firm that delivers interdisciplinary planning, design, and consulting services across water management, traffic infrastructure, environmental planning, architecture, structural engineering, surveying, project management, custom software development, and Building Information Modeling (BIM). The firm combines all ten disciplines under one roof to execute complex public and private infrastructure projects from concept through construction supervision, following HOAI service phases 1–9.

Product overview

Ingenieurbüro Klemm & Hensen GmbH is an independent, owner-managed engineering and architecture firm founded in 1991, offering a comprehensive portfolio of planning and consulting services across civil engineering disciplines. The company operates a unified service model organized into ten interconnected practice areas: Wasserwirtschaft (water management), Verkehr (traffic engineering), Umwelt (environmental planning), Architektur (architecture), Tragwerke (structural engineering), Vermessung (surveying), Projektsteuerung (project management), Softwareentwicklung (software development), BIM (Building Information Modeling), and Komplexprojekte (complex projects). Rather than discrete product modules, these represent integrated service offerings that the firm combines for interdisciplinary projects. Notably, the firm develops proprietary software products including the Gewässerunterhaltsabgabenberechnung system for water body maintenance fee calculation and Kanalplanungs-Software (via EFRE funding) for automated canal and pipeline planning with five specialized modules.

Differentiator

Problem solved

Functional benefit

Products and services

• Wasserwirtschaft (Water Management) Planning, design, and maintenance of water supply and wastewater systems, including canal network rehabilitation, hydraulic engineering, and hydrological modeling for municipalities and private clients.
• Verkehr (Traffic Engineering) Planning of traffic routes, bridges, and traffic concepts for municipalities, public authorities, and private clients, including road and infrastructure construction projects.
• Umwelt (Environmental Planning) Landscape planning, open space design, environmental impact assessments, and water ecology consulting for construction projects and infrastructure measures.
• Architektur (Architecture) Urban planning, building design, and sustainable construction consulting for residential, commercial, and public buildings.
• Tragwerke (Structural Engineering) Structural analysis and design for buildings and civil engineering structures including bridges, industrial buildings, retaining structures, and structural inspections per DIN 1076.
• Vermessung (Surveying) Land surveying services including design surveys, construction surveys, geodetic data, 3D laser scanning, GNSS positioning, drone-based photogrammetry, and bathymetric surveys.
• Projektsteuerung (Project Management) Certified project management services (IPMA) guiding projects from concept to completion with structured processes, interdisciplinary coordination, and risk control.
• Softwareentwicklung (Custom Software Development) Custom database-based software solutions for civil engineering applications, including Geoinformationssysteme (GIS) and Fachinformationssysteme (FIS) developed using agile and test-driven methodologies.
• BIM - Building Information Modeling
• Komplexprojekte (Complex Projects) Interdisciplinary project management bundling all firm competencies for large-scale infrastructure and construction projects requiring cross-discipline coordination.
• Gewässerunterhaltsabgabenberechnung (Water Body Maintenance Fee Calculation System) Fully integrated system for calculating water body maintenance fees, using ALKIS land parcel data, web-GIS interface, open-source components, automated notice generation, and bitemporal data management, delivered to public sector clients.
• Kanalplanungs-Software (Canal Planning Software) Specialized software for automated planning of channels and pipelines, consisting of five modules: canal planning, pipeline planning, canal cadastre, canal renovation, and canal special structures, for sewer network operators.

Quantifiable outcome

• 35+ years of documented experience with references spanning multiple decades
• +2 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• buildingSMART – Regionalgruppe MitteldeutschlandcoreTechnology or IntegrationThe company is a member of buildingSMART Regionalgruppe Mitteldeutschland and is committed to the dissemination and further development of BIM planning methodology based on openBIM standards. The partnership supports the company's BIM practice and ensures adherence to international buildingSMART standards and ISO/DIN norms.
• DigiTransSachs (HTWK Leipzig)minorStrategic or Co-development PartnerDigiTransSachs is a research group at HTWK Leipzig dealing with digital transformation processes. The company collaborates with this partner in the area of Building Information Modeling (BIM), contributing to academic research and development of BIM methodologies.
• Ingenieurkammer SachsencoreOthersSaxon Chamber of Engineers – the only legally legitimized interest representation for Saxon engineers of all disciplines, operating as a public corporation under self-governance.
• Ingenieurkammer Sachsen-AnhaltcoreOthersChamber of Engineers for Saxony-Anhalt.
• Ingenieurkammer ThüringencoreOthersChamber of Engineers for Thuringia.
• Architektenkammer SachsencoreOthersSaxon Chamber of Architects.
• Architektenkammer ThüringencoreOthersThuringian Chamber of Architects.
• VSVI e.V.minorOthersAssociation of traffic engineering professionals.
• Güteschutz Kanalbau e.V.minorOthersQuality assurance association for canal construction.
• DWA (Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall)coreOthersPolitically and economically independent association promoting sustainable water management and supporting research and development. The company is also a member of DWA regional water neighbor groups '210 Weiße Elster - Mulde' and '258 Obere Saale - Weiße Elster'.
• VFIB (Verein zur Förderung der Qualitätssicherung und Zertifizierung der Aus- und Fortbildung von Ingenieuren der Bauwerksprüfung)minorOthersAssociation for quality assurance and certification of training and continuing education for structural inspection engineers.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• IFB Eigenschenk GmbH: Deggendorf-based mid-size German engineering firm offering civil, structural, and infrastructure planning services. Comparable in scale, multi-disciplinary service offering, and German Mittelstand operating model focused on regional public sector clients.
• Björnsen Beratende Ingenieure GmbH: Koblenz-based mid-size German engineering consultancy specializing in water, environment, and infrastructure planning. Directly comparable to Klemm & Hensen in water engineering focus, mid-size scale, German Mittelstand model, and public sector client base.
• Krebs und Kiefer Ingenieure GmbH: Darmstadt-based German engineering consultancy with strong structural, civil, and infrastructure planning capabilities. Comparable in offering multi-disciplinary engineering and architecture services, though with broader geographic presence and larger headcount than Klemm & Hensen.
• RMD-Consult GmbH: Munich-based German engineering consultancy specializing in water, hydraulic engineering, and infrastructure planning. Directly comparable in water engineering focus and project-based services to public sector clients, though larger in scale than Klemm & Hensen.

Broad incumbents

• AFRY AB (Germany): German operations of Swedish engineering consultancy AFRY (formed via ÅF and Pöyry merger), active in infrastructure, water, and environmental engineering. Comparable in core planning services for public sector clients, though operating at much larger scale with international resources.
• WSP Germany: German operations of global engineering consultancy WSP, providing water, environment, and infrastructure planning services. Comparable in service portfolio but operates as a global incumbent with substantially greater scale, digital capabilities, and cross-border project reach than regional Klemm & Hensen.
• Dorsch Holding GmbH: Frankfurt-based established German engineering group with broad service portfolio across infrastructure, water, environment, and architecture. Comparable as a multi-disciplinary German engineering firm, though substantially larger and offering international reach that exceeds Klemm & Hensen's regional footprint.
• Ramboll Germany: German branch of Danish engineering consultancy Ramboll, providing water, environment, infrastructure, and architectural services. Comparable in multi-disciplinary service model though substantially larger and with international reach beyond Klemm & Hensen's regional focus.
• Sweco GmbH: German operations of pan-European engineering consultancy Sweco, active in water, infrastructure, and environmental planning. Comparable in core service areas but operates at significantly larger scale across multiple European countries with broader capabilities.
• Arcadis Germany: German operations of global engineering consultancy Arcadis, offering water, infrastructure, and environmental planning services. Comparable in service scope but operates as a multinational incumbent with substantially greater resources and digital capabilities than regional Klemm & Hensen.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/ingenieurb%C3%BCro-klemm-&-hensen-gmbh

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Ingenieurbüro Klemm & Hensen GmbH