What Weimer Gruppe does

Weimer Gruppe is a privately held, family-owned German construction group headquartered in Lahnau, Mittelhessen, operating under the legal entity Weimer GmbH since 1888 under Managing Director Martin Bender. The group delivers integrated construction services across the full project lifecycle — demolition and remediation, civil engineering and earthworks, specialized foundation engineering, cable and network construction, turnkey building construction, and ongoing facility management — serving commercial and industrial developers, real estate investors, telecommunications providers, and German municipal and district government clients primarily across Hessen, the Rhein-Main region, and selectively beyond state borders.

The operating model rests on a network of twelve or more wholly-owned subsidiaries that internalize adjacent phases of the construction value chain: Weimer GmbH as the core contractor; Kirchner Spezialtiefbau for drilling and piling; WEIMER Netz+Service for cable and FTTC dark-fibre network build-and-operate, including an owned county-wide fibre network with 24/7 monitoring; WEIMER Facility Management for recurring property management; WEIMER Wohnbau for self-developed residential (e.g., the 87,000 m², 400+ apartment Wohnen am Alten Flughafen Gießen project); WEIMER Energie for geothermal and PV-integrated building solutions; Recycling GmbH Lahnau for on-site urban mining of construction waste into reusable 0-45mm material; Gewerbepark Lahnau for commercial estate management; Furnier und Holzwerk Mittenaar for veneer and wood products; SBM Sekundärbrennstoff Mittelhessen for secondary fuel; Lahnau Akustik for acoustic engineering; and WR Haustechnik for technical building services.

Revenue is generated through a mix of one-time project contracts (demolition, excavation, turnkey construction, network deployment) won via direct negotiation, competitive public tenders, and repeat relationships; subscription-style recurring facility management revenue; and transaction-based recycling and material recovery fees. Pricing is project-specific and quote-based with no publicly disclosed price list. The company pursues enterprise field sales through direct client engagement, public procurement bidding, and internal subsidiary cross-referrals, and markets itself through its corporate website, regional sports sponsorship (HSG Wetzlar), and a broad social media presence (LinkedIn, Instagram, Facebook, TikTok) that doubles as employer branding for active recruitment. Notable enterprise clients include Deutsche Telekom Technik, Yaskawa Europa, Schunk, Züblin Spezialtiefbau, Volksbank Mittelhessen, HEYMAN Manufacturing, and TransPak.

Name

Weimer Gruppe

Legal name

Weimer GmbH

Website

https://weimer-gruppe.de

Company type

Private

Founded year

1888

Operating status

Operating

Headcount range

11–50 employees

Short description

Family-owned German construction group (since 1888, Weimer GmbH) headquartered in Lahnau, Mittelhessen, delivering integrated demolition, civil engineering, specialized foundation, network, and turnkey construction services plus facility management to commercial developers, industrial firms, telecom providers, and municipalities primarily across Hessen.

Ownership category

akta.pro rank

Product category

Construction Services

NAICS

Residential Building Construction (23611), Nonresidential Building Construction (2362), Other Heavy and Civil Engineering Construction (237990), Power and Communication Line and Related Structures Construction (237130)

SIC

General Bldg Contractors - Residential Bldgs (1520), General Bldg Contractors - Nonresidential Bldgs (1540), Heavy Construction Other Than Bldg Const - Contractors (1600), Services-Engineering Services (8711)

akta.pro primary industry

Residential General Contracting (New Build) (IMAFAAAB)

akta.pro secondary industries

Disaster Recovery & Restoration General Contracting (IMAFAAAJ), Overhead & Underground Collection System Construction (MV/HV Lines, Duct Banks) (EUAEADAG)

Keywords

• Construction services
• Demolition services
• Civil engineering
• Turnkey construction
• Facility management

Headquarters

HQ city

Lahnau

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Construction Services Revenue: Project-based revenue from construction services including demolition and deconstruction, civil engineering, specialized foundation work, cable and network infrastructure, and turnkey building construction. Revenue is generated through competitive bidding, direct negotiations, and public procurement processes. Projects range from small demolition jobs to large-scale infrastructure and commercial building projects.
2. Facility Management Services: Ongoing facility management services provided through WEIMER Facility Management subsidiary for properties under management.
3. Recycling and Material Recovery: Processing of construction and demolition waste into reusable materials through subsidiary Recycling GmbH Lahnau, enabling material recovery and disposal services.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels8 records

Core offering

Weimer Gruppe is a German construction services group that delivers integrated building and civil engineering services to commercial, industrial, and public-sector clients. Its offerings span demolition and remediation, civil engineering and earthworks, specialized foundation engineering, cable and network construction, and turnkey building construction. The group also operates recurring facility management and residential development through its wholly-owned subsidiaries, supported by in-house construction material recycling and energy services.

Product overview

Weimer Gruppe is a diversified construction and building services group based in Lahnau, Mittelhessen, Germany, operating since 1888. The group comprises multiple specialized subsidiaries offering a comprehensive range of construction services: Weimer GmbH serves as the core construction company providing demolition, civil engineering, special foundation engineering, infrastructure construction, and turnkey building services. Related subsidiaries include WEIMER Netz+Service for network and cable construction, WEIMER Facility Management for building management, WEIMER Wohnbau for residential development, and WEIMER Energie for sustainable energy solutions. Additional specialized operations include Kirchner Spezialtiefbau for foundation engineering, Recycling Lahnau for construction material recycling, Gewerbepark Lahnau for commercial real estate, and Furnier und Holzwerk Mittenaar for wood processing. This multi-disciplinary approach allows the group to manage projects from demolition through construction to facility management and energy solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Demolition and Remediation Services Building demolition, deconstruction, and remediation services including hazardous material handling, urban conversion, and site preparation, delivered for commercial, industrial, and public-sector clients across the Mittelhessen region.
• Civil Engineering and Earthworks Civil engineering, earthworks, excavation, and canal construction services for infrastructure, road, and commercial projects, including large-scale excavations such as DB Tower Frankfurt (30,000 m³) and Messeeingang Süd Frankfurt (50,000 m³).
• Turnkey Building Construction End-to-end turnkey building construction (schlüsselfertiges Bauen) for commercial, industrial, and residential projects including DGNB Gold certified builds, residential developments with 400+ apartments, production halls, office buildings, and dealership facilities.
• Network and Cable Construction Telecommunications network construction including fiber optic (FTTx) and copper cable deployment, trenching, cable pulling and blowing, and 24/7 network monitoring and maintenance, delivered by subsidiary WEIMER Netz+Service GmbH for telecom operators and public clients.
• Specialized Foundation Engineering Specialized foundation engineering (Spezialtiefbau) including drilling, piling, diaphragm wall construction, anchors, and dewatering services for complex construction pit and infrastructure projects.
• Facility Management Services Recurring facility management services for buildings and properties under management, provided through subsidiary WEIMER Facility Management.
• Construction Material Recycling Processing of mineral construction and demolition waste into reusable recycling materials with grain sizes from 0mm to 45mm through urban mining and on-site recycling, delivered by subsidiary Recycling GmbH Lahnau.

Quantifiable outcome

• Wohnen am Alten Flughafen project: 87,000 m² gross floor area, 400+ apartments across 22 buildings in 8 construction phases
• +3 more outcomes

Named customers20 records

Segments5 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

Six partnerships are on record, tiered minor.

• Bauer GmbH (ARGE partner)minorStrategic or Co-development Partner · 1 January 2022Joint venture (ARGE - Arbeitsgemeinschaft) partnership for Messeeingang Süd Frankfurt project. Bauer contributed diaphragm wall construction, anchors, and dewatering services while WEIMER handled general contracting and additional construction pit work.
• Hetzner Online GmbHminorOthersWebsite hosting provider for the company's web presence. Services include server infrastructure and hosting capabilities.
• netcup GmbHminorOthersWeb hosting services utilized in conjunction with Hetzner for website infrastructure.
• consentmanager ABminorOthersCookie consent management platform provider for GDPR compliance on the company website.
• CloudflareminorOthersContent Delivery Network (CDN) and Web Application Firewall (WAF) services for website protection and performance optimization.
• HSG WetzlarminorGTM or Marketing PartnerOfficial sponsor of the HSG Wetzlar handball sports club, providing marketing visibility and community engagement.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Regional players

• W. Hundhausen Bauunternehmung GmbH: Family-owned construction company based in Siegerland (close to Weimer's Hessen territory) with turnkey building, civil engineering, and infrastructure capabilities. Comparable on regional Mittelstand model and project-mix; a closer geographic peer in the broader Mittelhessen/Westfalen corridor.
• Klebl GmbH: Family-owned German construction group based in Neumarkt (Bavaria) with turnkey building, civil engineering, precast, and project development operations. Comparable on family-owned Mittelstand structure, integrated services, and own subsidiary ecosystem (e.g., precast manufacturing complementing construction).
• Depenbrock Bau GmbH & Co. KG: Northern German (Niedersachsen) family-owned general contractor with turnkey building, civil engineering, and special foundation capabilities. Comparable on Mittelstand structure and integrated service mix, though focused on a different geography than Weimer's Hessen base.

Broad incumbents

• Hochtief AG: Essen-based, publicly listed (ACS-controlled) one of Germany's largest construction groups operating across building, infrastructure, and civil engineering globally. Comparable as a competing general contractor for large Hessian public tenders, but materially larger and broader in scope.
• Bilfinger SE: Mannheim-based industrial services and engineering group with strong presence in process industry, energy, and infrastructure construction. Comparable on engineering/construction services in regulated and industrial end-markets, though more services-and-maintenance focused than Weimer.

Direct peers

• Goldbeck GmbH: Bielefeld-based German Mittelstand general contractor specializing in turnkey commercial, industrial, and logistics buildings with a systemized design-build approach. Closely comparable as a family-controlled, integrated construction specialist competing for similar commercial/industrial turnkey work.
• Ed. Züblin AG: Stuttgart-based general contractor (Strabag subsidiary) operating across civil engineering, special foundation work, turnkey building, and infrastructure in Germany. Directly comparable to Weimer's integrated construction portfolio and is also a Weimer customer (DB Tower FFM).
• Leonhard Weiss GmbH & Co. KG: Family-owned German construction group with operations in road/civil engineering, turnkey building construction, and network/line construction. Highly comparable to Weimer on integrated service portfolio, Mittelstand ownership, and combined building + infrastructure + networks focus.
• Max Bögl Stiftung & Co. KG: Large family-owned German construction group with strong civil engineering, special foundation, turnkey building, and renewable-energy/infrastructure capabilities. Comparable on integrated service model, foundation engineering, and renewable EPC adjacency.
• Köster GmbH: Osnabrück-based German Mittelstand general contractor offering turnkey building, civil engineering, and project development. Comparable in family ownership, full-service positioning, and turnkey construction delivery model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/weimergruppe
• LinkedInlinkedin.com/company/weimer
• Instagraminstagram.com/weimer_gruppe
• TikToktiktok.com/@weimer_gruppe

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries11 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 Weimer Gruppe