OBG Gruppe

What OBG Gruppe does

OBG Gruppe GmbH is a privately held German Mittelstand construction group headquartered in Ottweiler, Saarland, founded in 1963 and operating through 12 wholly-owned subsidiaries that span the full construction value chain. The group's core operations are divided between OBG Hochbau (above-ground construction including turnkey, commercial, industrial, healthcare, education, sports, and residential buildings), OBG Tiefbau (civil engineering, canal construction, wastewater treatment plants, and infrastructure modernization), OBG Lux (Luxembourg market operations since 2006), and OBG Rhein-Neckar (Rhine-Neckar metropolitan region). Specialized subsidiaries include IMMPRINZIP (subsidized housing development), QBUS (real estate services and IT solutions), Quartiersmanufaktur (urban revitalization), ENROTEC (pipeline and plant construction), aventas (concrete renovation and bridge construction), LIBERTAS ENERGY (photovoltaic systems), and IRIDIOS (construction insurance brokerage).

The group generates revenue primarily through project-based construction contracts as a general contractor (Generalunternehmer), offering Guaranteed Maximum Price (GMP) and fixed-price contract structures. Core technical capabilities include Holzhybridbauweise (wood-hybrid construction with building-integrated solar), extensive Vorfertigung (prefabrication including facade elements with pre-installed windows and reinforced concrete cores), and the regionally exclusive Flüssigboden (Liquid Soil) technique for cost-efficient reuse of excavated material. The group maintains DGNB Silver/Gold certifications, KfW 40 EE energy efficiency standards, and LEED Silver credentials, supporting its sustainable construction positioning.

OBG serves four primary customer segments: public sector/government clients (municipalities, defense, public utilities), commercial/industrial enterprises (BOSCH, ZF Friedrichshafen, Diehl Defence, Globus), residential developers and subsidized housing partners (Nassauische Heimstätte, LBBW Immobilien), and U.S. military installations in Germany under a 25-year relationship with 66 completed projects since 2000. Customer acquisition operates through public tenders, direct negotiation, and long-term partnership models across Southwest Germany, the Rhine-Neckar metropolitan region, and Luxembourg.

Name

OBG Gruppe

Legal name

OBG Gruppe GmbH

Website

https://obg-gruppe.de

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

501–1,000 employees

Short description

OBG Gruppe is a German Mittelstand construction group offering turnkey building construction, civil engineering, infrastructure, and real estate development services through 12 subsidiaries, serving public sector, industrial, residential, and U.S. military clients across Southwest Germany and Luxembourg.

Ownership category

akta.pro rank

Product category

Construction Services

NAICS

Commercial and Institutional Building Construction (23622), Nonresidential Building Construction (2362), Architectural Services (54131)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), General Bldg Contractors - Residential Bldgs (1520), General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)

akta.pro primary industry

Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE) (EUAMAFAJ)

akta.pro secondary industries

Civil & Site Works EPC (Earthworks, Roads, Drainage, Foundations) (EUAEADAA), Overhead & Underground Collection System Construction (MV/HV Lines, Duct Banks) (EUAEADAG), Environmental & Permitting Compliance During Construction (Erosion Control, Wildlife Mitigation, Monitoring) (EUAMAFAM)

Keywords

• Turnkey construction services
• Civil engineering construction
• Building construction general contractor
• Real estate project development
• Infrastructure construction services

Headquarters

HQ city

Ottweiler

HQ country

Germany

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Services - Turnkey Delivery: OBG generates revenue through one-time project contracts for construction services, acting as general contractor (Generalunternehmer). Projects range from residential buildings to industrial facilities, infrastructure, and specialized construction. Revenue is project-based with typical contract values ranging from millions to tens of millions of euros per project.
2. Project Development: Through subsidiaries like IMMPRINZIP and Quartiersmanufaktur, OBG engages in real estate development including planning, construction, and sale/lease of residential and commercial properties.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

OBG Gruppe is a German construction group that delivers turnkey building construction, civil engineering, and infrastructure projects as a general contractor (Generalunternehmer) from a single source. The group serves government, military, commercial, industrial, and residential clients through specialized subsidiaries covering high-rise construction, civil engineering, project development, and related services such as concrete renovation, pipeline construction, and photovoltaics.

Product overview

OBG Gruppe is a construction and real estate development group based in Ottweiler, Germany, offering a comprehensive portfolio of construction services through multiple specialized subsidiaries. The group operates as a platform of distinct operating divisions: OBG Hochbau (above-ground construction), OBG Tiefbau (civil engineering/infrastructure), OBG Lux (Luxembourg market), and OBG Rhein-Neckar (Rhine-Neckar region), supported by specialized service brands including IMMPRINZIP (subsidized housing), QBUS (real estate services and IT solutions), Quartiersmanufaktur (urban development), ENROTEC (pipeline/plant construction), aventas (concrete renovation), IRIDIOS (insurance), and Libertas Energy (photovoltaics). Core services include turnkey construction (Schlüsselfertigbau), commercial, industrial and residential construction, project development, general planning, and specialized infrastructure services such as sewage treatment plants, wastewater systems, and bridge construction. The group also offers innovative techniques like liquid soil (Flüssigboden) and serves international clients including US military projects. An online application system with resume scanning capability is available for recruitment purposes.

Differentiator

Problem solved

Functional benefit

Brands

• QBUS: Project development, general planning, general services, real estate monitoring and IT solutions for the real estate and construction industry
• IMMPRINZIP
• ENROTEC
• Quartiersmanufaktur
• LIBERTAS ENERGY
• aventas.bau
• IRIDIOS

Products and services

• Schlüsselfertigbau (Turnkey Construction)
• Gewerbebau (Commercial Construction) Commercial building construction including office buildings, administrative facilities, and shopping centers tailored to specific business requirements. Serves private commercial and institutional clients.
• Industriebau (Industrial Construction) Industrial building construction for logistics, healthcare, automotive, special engineering, and mechanical engineering sectors with schedule and cost certainty. Serves industrial enterprises.
• US-Liegenschaften (US Military Properties) Construction services for U.S. military properties in Germany, including specialized security requirements and international building standards compliance (LEED, U.S. Army Corps of Engineers specifications). Targeted at U.S. armed forces installations.
• Kläranlagen (Sewage Treatment Plants) Construction of sewage treatment plants with 50 years of experience, including mechanical and biological treatment facilities. Serves municipalities and public utilities.
• Abwasseranlagen (Wastewater Systems) Certified wastewater system construction including canal and collector construction with membership in the Quality Protection Canal Construction association. Serves municipalities and public utilities.
• Flüssigboden (Liquid Soil)
• Projektentwicklung (Project Development) Real estate development for residential, commercial, and land development projects from initial concept through implementation and marketing. Delivered through subsidiaries including IMMPRINZIP and Quartiersmanufaktur.
• Generalplanung (General Planning) Integrated planning services covering design, architecture, fire protection, building physics, structural engineering, and safety/building technology from a single source. Delivered through QBUS.
• Betonsanierung (Concrete Renovation) Concrete renovation and modernization services including bridge repair, maintenance, and new bridge construction. Delivered through the aventas subsidiary.
• Brückenbau und Brückensanierung (Bridge Construction and Renovation) Bridge construction, maintenance, and repair services for road construction authorities, municipal bodies, and construction firms. Delivered through the aventas subsidiary.
• ENROTEC Versorgung und Anlagenbau (Pipeline and Plant Construction) Pipeline systems, plant engineering, gas pressure regulation and measurement systems. Two divisions: ENROTEC Versorgung (pipeline systems and district heating) and ENROTEC Anlagenbau (gas pressure regulation and metering stations).
• IMMPRINZIP Geförderter Wohnungsbau (Subsidized Housing Development) Subsidized and affordable housing planning and realization, delivering KfW 40 EE energy-efficient residential projects. Serves housing developers, investors, and municipalities.
• Libertas Energy Photovoltaikanlagen (Photovoltaic Systems) Planning, installation, and aftercare of photovoltaic systems for businesses and private individuals, offering economic electricity generation and climate contribution.
• Sonderbauten (Special Structures) Specialized engineering structures including complex civil engineering works delivered through the Ingenieurbau division.

Quantifiable outcome

• 66 U.S. military projects completed since 2000
• +3 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core, major and minor.

• WOLFF & MÜLLER Government ServicescoreStrategic or Co-development Partner · 1 October 2025ARGE (working group) partnership for the 46 million EUR U.S. Army housing project in Baumholder. Both companies jointly execute the project as general contractors under the ARGE model, combining their expertise and resources.
• ThönicoreStrategic or Co-development Partner · 1 August 2025ARGE partnership for the BioMasseZentrum Klarenthal project (50 million EUR). Thöni supplies plant technology while OBG handles civil engineering construction for the biomass processing facility.
• Landimmo Real Estate LuxembourgmajorImplementation/ SI/ Consulting Partner · 1 July 2025Multi-phase model engagement for the Josephine Building project in Luxembourg City (high double-digit million EUR). OBG Lux provides preconstruction and construction services with cost optimization focus.
• IRIDIOS VersicherungsmaklerminorOthersIndependent insurance broker specializing in construction and real estate industries, providing risk analysis and management services to OBG Group companies.
• QBUS / QBUS 3DcoreTechnology or IntegrationIntegrated subsidiary network partner providing project development, general planning, technical building services, IT solutions, and general contractor services for real estate and construction projects.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Bilfinger SE: European-listed industrial services and construction provider with strong German presence in process industry, infrastructure, and energy-related construction. Comparable as a public-sector/industrial construction contractor; larger scale but overlapping in civil engineering and energy projects.
• Hochtief AG: Germany's largest publicly listed construction group with broad building, civil, and infrastructure capabilities. Comparable as a general contractor serving public-sector, industrial, and commercial clients; much larger scale but overlaps in turnkey delivery and complex project execution.
• Strabag AG: Large European construction group with German operations in building, civil engineering, and infrastructure. Comparable as a multi-service construction provider with similar turnkey/delivery models and exposure to public tenders.
• Züblin AG (Strabag): German nonresidential building construction arm of Strabag, offering turnkey building, civil engineering, and tunneling. Comparable as a German general contractor specializing in nonresidential turnkey projects and complex civil works.

Regional players

• BAM Group (Royal BAM): Dutch-based European construction group with significant German operations in building and civil engineering. Comparable as a multi-service European construction firm operating across multiple geographies with public/private sector exposure.

Direct peers

• Max Bögl Wind AG: German mid-size construction and prefabrication group active in building construction, civil engineering, and renewable infrastructure. Comparable as a Mittelstand German GC with adjacent energy/photovoltaic and prefabrication competencies, similar geographic footprint in Bavaria/Southern Germany.
• GOLDBECK GmbH: German commercial/industrial construction specialist with a strong system-build and prefabrication model. Comparable as a Mittelstand GC specializing in turnkey commercial/industrial buildings, with similar scale (€1B+ revenue) and reuse of standardized components for schedule efficiency.
• Leonhard Weiss GmbH & Co. KG: Family-owned German construction company operating in building construction, civil engineering, and road construction across Germany. Comparable as a mid-size German general contractor with similar Mittelstand governance, GC/turnkey model, and regional operating geographies.
• Wolff & Müller: Germany-based family-owned construction group operating nationally in building construction and civil engineering. Directly comparable as a regional/mid-size German general contractor with similar generalunternehmer model; OBG's ARGE partner on the 46M EUR U.S. Army Baumholder project.
• Köster GmbH: German Mittelstand general contractor with national coverage in turnkey commercial, industrial, and residential construction. Comparable as a German GC operating in turnkey building construction, with similar client types and integrated planning services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xxing.com/companies/obggruppe
• Facebookfacebook.com/OBGGruppe
• LinkedInlinkedin.com/company/obg-gruppe
• Instagraminstagram.com/obg_gruppe_

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries12 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 OBG Gruppe