HANNES GmbH & Co. KG

What HANNES GmbH & Co. KG does

HANNES GmbH & Co. KG is a privately held German craft/construction group (GmbH & Co. KG structure, HRA 4432 Amtsgericht Recklinghausen) with a 140-year operating history dating to its 1882 founding in Bochum. Headquartered in Herten, the group operates through wholly-owned regional units — HANNES Ruhrgebiet (led by Steffen Holzhücter) and HANNES Niederrhein (led by Peter Stemmer) — plus sister company Hans Naler GmbH & Co. KG for sanitary and heating work. Managing Director is Dr. Michael Wagner. The company delivers multi-trade building services spanning plumbing, heating, painting, drywall, flooring, fire protection, and electrical trades under single-project coordination, anchored by an in-house workforce of 140+ permanently employed craftsmen and a proprietary digital Baustellenakte for real-time project documentation.

The business is organized around four primary customer segments: the Wohnungswirtschaft (housing companies and property managers running residential portfolios in the Ruhr and Lower Rhine regions), commercial and industrial clients (including Deutsche Telekom and Hornbach), the public sector (Stadt Wuppertal, Agentur für Arbeit, financial authorities), and a smaller tail of discerning private residential customers. Notable project references include a 600 kW cascade heating system for 60 units installed in 5 weeks for VBW Bauen und Wohnen, water-damage remediation for Hornbach, facade renovation for Stadt Wuppertal schools, and complete interior fit-outs for dental practices and software companies.

Revenue is generated primarily through project-based contracts (one-time construction, renovation, heating-modernization, and water-damage-remediation projects) supplemented by recurring maintenance and service contracts for heating, fire protection, and technical facility management. Pricing is quote-based with standardized flat-rate packages for tenant-turnover apartment modernization and individual proposals for complex commercial work. The company is a NIBE Efficiency Partner for heat pumps and maintains SIVV concrete-repair, TÜV-certified mold-remediation, and DIN 4102 fire-protection credentials. Distribution is entirely direct via field sales and inside-sales teams; go-to-market is relationship-driven, with framework agreements with housing associations and public-sector procurement supplemented by referrals and SEO-optimized web presence at hannes.biz.

Name

HANNES GmbH & Co. KG

Legal name

HANNES GmbH & Co. KG

Website

https://hannes.biz

Company type

Private

Founded year

1882

Operating status

Operating

Headcount range

1–10 employees

Short description

HANNES GmbH & Co. KG is a 140-year-old German multi-trade Handwerk group delivering plumbing, heating, painting, drywall, flooring, fire protection, and electrical services to housing companies, commercial clients, and public institutions across the Ruhr and Lower Rhine regions.

Ownership category

akta.pro rank

Product category

Multi-trade Building Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Specialty Trade Contractors (238)

SIC

Construction - Special Trade Contractors (1700)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industry

Boiler & Hydronic Heating Repair & Service (HSAOAHAG)

Keywords

• Multi-trade construction services
• Building renovation services
• Heating installation services
• Water damage restoration
• Fire protection installation

Headquarters

HQ city

Herten

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Multi-trade Construction and Renovation Projects: Project-based revenue from comprehensive apartment modernization, interior fit-out, and technical building services. Revenue is generated through fixed-price project contracts, particularly for standardized tenant turnover renovations and individually scoped commercial projects. B2B clients (housing companies, property managers) represent a significant revenue stream.
2. Heating and Plumbing Installation Services: Revenue from installation, replacement, and maintenance of heating systems (gas condensing, heat pumps, district heating substations) and sanitary installations for commercial, industrial, and public buildings. Includes 24/7 emergency repair services with service contracts.
3. Water Damage Remediation: Revenue from water damage emergency response, leak detection, technical drying, and full restoration. Typically project-based per incident, with documentation support for insurance claims.
4. Maintenance and Service Contracts: Recurring revenue from maintenance contracts for heating systems, fire protection, and technical facility management for commercial and housing company clients.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

HANNES GmbH & Co. KG is a multi-trade building services provider combining plumbing, heating, painting, drywall, flooring, fire protection, electrical, and interior fit-out trades under coordinated project management for housing companies, commercial and industrial clients, and public institutions in the Ruhr region and Lower Rhine area of Germany. The company delivers complete apartment modernization, heating system installation (including NIBE heat pumps), water damage restoration, bathroom renovation, fire protection installation, and technical facility management through in-house craftsmen with digital project documentation.

Product overview

HANNES GmbH & Co. KG is a traditional craft/construction company offering multi-trade building services for commercial, industrial, and public clients across the Ruhr area and Lower Rhine region of Germany. The portfolio is organized as a unified service offering under the HANNES corporate brand, combining all trades (sanitary, heating, painting, drywall, flooring, fire protection, electrical) under single-project coordination. Key services include Wohnungsmodernisierung (apartment modernization with E-Check documentation), Wasserschadensanierung (water damage restoration), Moderner Innenausbau (interior construction), Heizung Komplettservice (heating systems including NIBE heat pumps), Wohlfühl-Badezimmer (bathroom renovation), and technical fire protection. The company operates as a general contractor for building technology, coordinating all trades from a single point of contact with digital project documentation.

Differentiator

Problem solved

Functional benefit

Products and services

• Wohnungsmodernisierung (Apartment Modernization) Complete apartment modernization service covering all trades (plumbing, heating, painting, drywall, flooring, electrical) from a single source with digital documentation and rapid turnover between tenant changes, targeted at housing companies and property managers.
• Wasserschadensanierung (Water Damage Restoration) Comprehensive water damage restoration service including leak detection via thermography, tracer gas, and endoscopy; technical drying; mold remediation; and complete room restoration for residential, commercial, and public buildings.
• Moderner Innenausbau (Modern Interior Construction) Complete interior construction service combining drywall, flooring, painting, electrical, and sanitary trades under one project coordinator with digital project tracking, for commercial and public building clients.
• Heizung Komplettservice (Complete Heating Service) Full-service heating solutions including modernization, heat pump installation (NIBE products), gas condensing systems, district heating stations, floor heating, and 24/7 emergency service for commercial and public clients.
• Wohlfühl-Badezimmer (Comfort Bathroom) Complete bathroom renovation and modernization service including barrier-free solutions, full wet room conversions, and seamless surfaces for residential and commercial properties.
• Brandschutz (Fire Protection) Technical fire protection service for commercial and public buildings including penetration sealing, fire doors, fire dampers, dry wall fire protection ceilings and walls per DIN 4102, and core drilling.
• Malerarbeiten (Painting Services) Professional painting service including facade painting with scaffolding, stairwell painting, office painting, graffiti removal, and post-water-damage painting for residential and commercial properties.
• Bodenbeläge (Flooring) Complete flooring solution including tile work, vinyl, PVC, linoleum, epoxy coatings for industrial spaces, carpeting, and screed work for commercial and public buildings.
• Sanitärarbeiten (Sanitary Services) Technical sanitary solution including pipe burst repair, gas line leak repair, legionella prevention, drinking water hygiene, pressure boosting systems, and bathroom renovations for commercial and public buildings.
• Trockenbau (Drywall Construction) Technical drywall construction including walls, ceilings, acoustic solutions, fire protection systems (Promat and Knauf), room-in-room cube solutions, OWA/GK ceilings, and radiation protection for medical facilities.
• E-Check Electrical Inspection Certified electrical inspection service (E-Check) verifying the proper condition of electrical installations before new rentals, providing legal documentation for landlords, housing companies, and property managers.
• Wärmepumpen (Heat Pumps) Heat pump installation and service covering air-source and ground-source systems, delivered as NIBE Efficiency Partner, for commercial and public buildings.

Quantifiable outcome

• Apartment modernization completed within 4 weeks (standard projects); partial renovations within 2 weeks
• +5 more outcomes

Named customers11 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

Feature4 records

Partnerships

Four partnerships are on record, tiered core.

• NIBEcoreTechnology or IntegrationHANNES is an authorized NIBE Efficiency Partner (NIBE Effizienzpartner), enabling the company to sell, install, and service NIBE heat pump and heating systems. This partnership provides access to NIBE's product portfolio, technical training, and brand association for marketing heating solutions in the Ruhr region.
• Hans Naler GmbH & Co. KGcoreStrategic or Co-development PartnerHans Naler is a sister company within the HANNES group structure, specializing in sanitary and heating installations. The two companies work in close coordination on water damage remediation and repair projects, with Hans Naler handling pipe and fixture repairs while HANNES manages drying and restoration. This in-group partnership enables seamless multi-trade execution without sub-contractor coordination overhead.
• TÜV RheinlandcoreTechnology or IntegrationHANNES employs TÜV-certified specialists for mold remediation (Schimmelsanierung nach Richtlinien), ensuring compliance with German safety and quality standards for health-hazard remediation in buildings.
• Hans NalercoreImplementation/ SI/ Consulting PartnerHans Naler GmbH & Co. KG handles pipe repairs, sanitary installations, and heating work as part of joint project delivery. In the context of water damage projects, Hans Naler provides the technical repair expertise while HANNES delivers the drying and restoration services - a complementary internal partnership.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• ENGIE Deutschland: ENGIE Deutschland is a major energy services and technical facility management provider, with deep capabilities in heating, cooling, and building automation. It directly competes with HANNES in heating modernization and HVAC service for commercial and public sector clients across Germany.
• Imtech Deutschland (ENGIE): Imtech Deutschland, now part of ENGIE, is a German technical building services provider specializing in HVAC, plumbing, and electrical contracting for commercial and industrial clients. It overlaps with HANNES's heating and sanitary service offerings.
• Dussmann Group: Dussmann is a large German facility services group providing technical building management, HVAC, and integrated building services. Dussmann's Technical Solutions division competes with HANNES for public sector and commercial property maintenance contracts in Germany.
• Klüh Service Management: Klüh is a German multi-service facility management company providing cleaning, security, and technical building services. Its technical services division overlaps with HANNES's HVAC, fire protection, and building maintenance offerings for commercial and public clients.
• Strabag Property and Facility Services: Strabag PFS is the facility management arm of European construction major Strabag, offering technical building services, HVAC, and renovation for commercial and public clients. It competes with HANNES in larger commercial and institutional contracts across Germany.
• Gegenbauer: Gegenbauer is a German family-owned facility services and building technology provider, offering technical building management, HVAC, and interior fit-out across multiple regions. Like HANNES, it targets commercial and public clients with multi-trade technical services, though Gegeneauer operates at significantly larger scale.
• WISAG: WISAG is one of Germany's largest multi-trade building services and facility management providers, offering HVAC, electrical, plumbing, and interior fit-out services nationwide. WISAG competes with HANNES for commercial and public sector contracts but at significantly larger scale, with tens of thousands of employees across Germany.

Direct peers

• Geiger Facility Management: Geiger is a German family-owned building services company with similar multi-trade capabilities including HVAC, painting, drywall, and renovation. Geiger shares HANNES's regional German operating model and housing/commercial client focus, making it a direct comparable peer.
• Goldbeck: Goldbeck is a German construction and building services company specializing in turnkey commercial building construction, renovation, and facility management. Goldbeck's building services arm competes with HANNES for housing, commercial, and public sector modernization projects, with a similar multi-trade delivery model.

Regional players

• Sanitär Heinemann Group: Heinemann Group is a German multi-trade building services specialist focused on sanitary, heating, and air-conditioning services for residential and commercial clients. Like HANNES, it positions itself as a multi-trade single-source provider, with similar mid-size regional scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/hannes-gmbh-&-co.-kg

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries3 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 HANNES GmbH & Co. KG