Knobel Bau Gmbh

What Knobel Bau Gmbh does

Knobel Bau GmbH is a third-generation, family-owned German construction group headquartered in Hartheim am Rhein, founded in 1947 by Franz Knobel senior. The company provides civil engineering (Tiefbau), road construction (Straßenbau), canal construction (Kanalbau), earthworks (Erdbau), paving (Pflasterbau), road rehabilitation (Straßensanierung), demolition (Abbrucharbeiten), and asphalt and concrete milling services. It operates as a vertically integrated enterprise, controlling the full construction and raw materials value chain through wholly owned subsidiaries: a gravel quarry (Kieswerk), an asphalt mixing plant, a concrete mixing plant, a material recycling facility, and one of the largest earthwork disposal sites in the district. This closed-loop model — extracting raw materials, processing them into construction products, deploying them in projects, and reintroducing waste back into production — is the company's central technical and operational differentiator.

The company serves three primary customer segments: Trade and Industry (Gewerbe, Handel, Industrie), the Public Sector (Öffentliche Hand), and Private Customers (Privatkunden), with the first two designated as primary. Go-to-market is direct — via website contact forms, phone, email, and field sales — and the company participates in public tenders across the Dreiländereck (Germany–Switzerland–France border region). Pricing is project-quote-based; the AGB specifies 'frei Baustelle' (delivered) and 'ab Werk' (ex-works) material pricing, with invoices due immediately and default interest at 6 percentage points above the base rate. The company does not publicly disclose pricing or revenue.

Knobel holds DIN ISO 9001:2015 (Registration No. 010.058700; the first civil and road construction company in Germany to receive this certification), DIN ISO 50001 energy management certification, and Klimaneutral status with a 2037 climate-neutrality target. Sustainability investments include a photovoltaic installation covering approximately one-third of electricity needs, a hybrid excavator (first in Southern Baden), covered raw material storage saving 190 tonnes of CO2 annually, and a cold-milling asphalt recycling process. The company is led by Michael and Andreas Knobel as Managing Directors in the third generation, with 140–150 employees across the group.

Name

Knobel Bau Gmbh

Legal name

Knobel Bau GmbH

Website

https://knobel-bau.de

Company type

Private

Founded year

1947

Operating status

Operating

Short description

Knobel Bau GmbH is a third-generation, family-owned German construction group providing vertically integrated civil engineering, road construction, paving, demolition, and material production services, supported by its own gravel, asphalt, concrete, and recycling operations, serving commercial, public-sector, and private clients in the Dreiländereck region.

Ownership category

akta.pro rank

Product category

Civil Engineering and Road Construction Services

NAICS

Poured Concrete Foundation and Structure Contractors (23811), Asphalt Paving Mixture and Block Manufacturing (324121), Asphalt Paving, Roofing, and Saturated Materials Manufacturing (32412)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Modular/Offsite General Contracting & Installation (IMAFAAAK)

akta.pro secondary industry

Concrete Masonry Units (CMU) & Segmental Concrete Products (IMADAAAC)

Keywords

• Road construction services
• Civil engineering services
• Construction materials supply
• Earthworks and paving
• Asphalt and concrete production

Headquarters

HQ city

Hartheim

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Construction Services Revenue: Knobel earns revenue from providing construction services including civil engineering (Tiefbau), road construction (Straßenbau), canal construction, earthworks, paving, road rehabilitation, demolition, and asphalt/concrete milling. Services are provided to commercial clients, public-sector entities, and private customers on a project basis.
2. Asphalt, Gravel, and Concrete Sales: The company produces and sells construction materials including asphalt, gravel, and concrete from its own facilities. These are sold to external customers as well as used internally for own construction projects. The AGB page details specific terms for delivery and sale of gravel, sand, and asphalt mix.
3. Material Recycling and Disposal Services: Revenue generated from recycling concrete and asphalt waste back into usable materials, and from operating one of the largest earthwork disposal sites in the district.
4. Material Delivery Logistics: The AGB outlines terms for material delivery 'frei Baustelle' (free to construction site, including transport and unloading) and 'ab Werk' (ex works), with associated freight/logistics charges included in or separate from pricing.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels9 records

Core offering

Knobel Bau GmbH is a vertically integrated family-owned construction company providing civil engineering, road construction, canal construction, earthworks, paving, demolition, and asphalt/concrete milling services. The company controls the full value chain through its own gravel quarry (Kieswerk), asphalt mixing plant, concrete mixing plant, recycling facility, and earthwork disposal site, supplying both its own construction projects and external customers with construction materials.

Product overview

Knobel Bau Gmbh is a family-owned construction group offering an integrated portfolio of civil engineering and road construction services, supported by its own raw material production and recycling facilities. The company operates as a single unified construction enterprise rather than a platform-with-modules architecture. Core construction services include Tief- und Kanalbau (civil/canal engineering), Straßenbau (road construction), Erdbau (earthworks), Pflasterbau (paving), Straßensanierung (road rehabilitation), Abbrucharbeiten (demolition), and Asphalt- und Betonfräsen (asphalt/concrete milling). These services are vertically integrated through the company's own production facilities: Asphaltmischwerk (asphalt plant), Kieswerk (gravel quarry), Betonmischwerk (concrete plant), Recyclinganlage (recycling facility), and Erdaushubverfüllung (earth filling operation). This integrated model allows the company to extract raw materials, process them into construction products, and apply them directly in its construction projects—a closed-loop approach emphasizing regional production and sustainability.

Differentiator

Problem solved

Functional benefit

Products and services

• Tief- und Kanalbau (Civil Engineering and Canal Construction) Underground infrastructure construction including civil engineering and canal construction for clean water and wastewater management. Serves municipalities, commercial clients, and industrial customers requiring reliable underground infrastructure.

Quantifiable outcome

• 190 tonnes CO2 saved annually via covered raw material storage, equivalent to 750 tonnes of water saved (enough to fill 4,000 bathtubs)
• +5 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

14 partnerships are on record, tiered core and minor.

• ISTE (Institut für bautechnische Zusammenarbeit)coreStrategic or Co-development PartnerISTE is an institute for technical construction cooperation. Knobel is a member, contributing to industry standards development and technical collaboration in the construction sector.
• QRB (QualitätsRegister Baden-Württemberg)coreStrategic or Co-development PartnerQuality register for the Baden-Württemberg construction industry. QRB membership supports quality assurance and transparency in construction procurement.
• Bauwirtschaft Baden-Württemberg (Baden-Württemberg Construction Industry Association)coreStrategic or Co-development PartnerIndustry association representing the construction sector in Baden-Württemberg. Knobel participates in industry advocacy, standards, and policy development.
• Asphalt (German Asphalt Association)coreStrategic or Co-development PartnerGerman Asphalt Association (asphalt.de). Knobel is a member, participating in industry knowledge exchange, best practices, and advocacy for asphalt construction.
• NABU (Naturschutzbund Deutschland – Nature and Biodiversity Conservation Union)coreStrategic or Co-development PartnerNABU is one of Germany's largest environmental organizations. Knobel collaborates with NABU Nördliches Markgräflerland on biodiversity projects, particularly in transforming gravel extraction sites into wildlife habitats.
• KiWi Oberrhein (Wirtschaftsinitiative Oberrhein – Upper Rhine Economic Development Initiative)minorGTM or Marketing PartnerCross-border economic development initiative for the Upper Rhine region. Supports regional business networking and economic development across Germany, France, and Switzerland.
• DHBW Mosbach (Duale Hochschule Baden-Württemberg)minorStrategic or Co-development PartnerDual university in Baden-Württemberg. Knobel partners with DHBW for dual study programs (e.g., dual student program for civil engineering), contributing to talent development and education.
• Gewerbeverein BreisgauminorGTM or Marketing PartnerLocal trade and business association in the Breisgau region. Supports local business networking and community engagement.
• Die Familienunternehmer (Family Entrepreneurs Association)minorGTM or Marketing PartnerGerman association representing family-owned businesses. Knobel's membership reflects its identity as a third-generation family business.
• SV Hartheim Bremgarten e.V.minorGTM or Marketing PartnerLocal sports club in Hartheim. Knobel sponsors the club as part of its regional social responsibility and community engagement program.
• Webflow, Inc.coreTechnology or IntegrationWebsite hosting platform. The Knobel website is hosted on Webflow's platform. Data processing agreements are in place per GDPR Art. 28. EU standard contractual clauses cover data transfers to the USA.
• Cloudflare Inc.coreTechnology or IntegrationContent delivery network (CDN) and website security service. Cloudflare optimizes page load times and provides DDoS protection and other security features for the Knobel website.
• coveto ATS GmbHcoreTechnology or IntegrationApplicant tracking system (ATS) provider. Coveto provides the job posting and application management platform for Knobel's careers section.
• Amazon Web Services EMEA SARL (AWS / CloudFront CDN)coreTechnology or IntegrationAmazon CloudFront CDN distributes website content globally through edge servers to optimize load times and data transfer security.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Leonhard Weiss GmbH & Co. KG: Large German family-owned construction company with road construction, civil engineering, and building materials operations. Comparable in family-owned German Mittelstand construction model with road/civil engineering focus.
• Matthäi Bauunternehmen GmbH & Co. KG: Mid-sized German construction group operating civil engineering, road construction, and building materials production (gravel, asphalt, concrete). Comparable in vertically integrated business model and Mittelstand family ownership structure.
• Reif Bauunternehmung GmbH & Co. KG: German regional construction contractor offering road construction, civil engineering, and earthworks with similar headcount and scope. Comparable in serving public-sector clients and private customers in a defined regional footprint.
• Berger Bau GmbH: Munich-based German construction company active in civil engineering, road construction, and building materials. Comparable in medium-sized regional construction services model.
• Depenbrock Bau GmbH & Co. KG: German family-owned construction company offering road construction, civil engineering, and building materials. Comparable in family-owned German Mittelstand construction with regional focus.
• HEITKAMP Erd- und Straßenbau GmbH: German regional civil engineering and road construction contractor with similar headcount and project profile. Comparable in mid-sized German road construction services offerings.

Broad incumbents

• EUROVIA GmbH: German subsidiary of France's Vinci Group, one of the largest road construction and infrastructure providers in Germany. Overlaps with Knobel in road construction, asphalt production, and aggregate supply, but at vastly larger national scale.
• HOCHTIEF AG: Major German construction company with significant civil engineering and transportation infrastructure operations. Overlaps with Knobel in road/civil engineering contracting but is globally diversified and many times larger.
• STRABAG SE: One of Europe's largest construction companies with major German road construction and civil engineering operations. Comparable in road construction services and materials production, but operates at continental scale.
• WOLFF & MÜLLER Holding GmbH & Co. KG: Stuttgart-based family-owned German construction group with full civil engineering, road construction, and infrastructure capabilities. Comparable in family-owned German construction services model, though broader in geographic reach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@knobelbau-gruppe8276/videos
• Facebookfacebook.com/knobelbau/?locale=de_DE
• LinkedInlinkedin.com/company/knobel-bau-gmbh
• Instagraminstagram.com/knobel_baugruppe

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries6 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 Knobel Bau Gmbh