What Storz does

J. Friedrich Storz Verkehrswegebau GmbH & Co. KG is a third-generation family-owned civil engineering and construction materials group headquartered in Tuttlingen, Germany, founded in 1927. Operating under the STORZ and CONVIA sub-brands, the company delivers end-to-end road construction, civil engineering, paving, bridge and structure restoration, tunnel construction, and large-scale infrastructure projects, supplemented by an integrated building-materials vertical covering raw material extraction (quarries), aggregate crushing, concrete and asphalt production, a construction-materials laboratory, and fleet logistics. Customers are predominantly German public-sector clients (federal Bund, Land Baden-Württemberg, municipal Kommunen, Regierungspräsidium Freiburg, and DEGES), with secondary exposure to industrial enterprises (e.g., Daimler AG), private investors, and eastern Switzerland via subsidiary CONVIA Bau AG.

The group's go-to-market is direct project-based contracting via seven regional branches in southern Baden-Württemberg, executing work either as sole contractor or as lead partner in ARGE consortia (e.g., €106M A81 expansion with Eurovia). Revenue is generated across four streams: (1) road and civil engineering construction services; (2) building materials production and external sales (aggregates, gravel, asphalt); (3) environmental services (recycling, contaminated-site remediation, landfill construction via CONVIA Geo Consult); and (4) logistics/transportation via CONVIA Logistik GmbH & Co. KG. Pricing is bid-driven against multi-year public contracts, with no publicly disclosed price list. Technology emphasis is on the 'STORZ Bauen 4.0' digitalization program — GPS/laser-controlled machinery, drone-based site documentation, telematics, and the proprietary 'Maximal-Recycling-Verfahren' for asphalt — supported by ISO 50001 energy management and Präqualifikation Bau credentials.

Recent strategic activity (2024-2026) reflects active expansion: acquisition of Kieswerke Kohler (Jan 2025) and AWZ Asphaltmischwerk Zimmern (April 2026), opening of the Böblingen Bauwerkinstandsetzung office (Nov 2024), and the €106M A81 contract win (Sept 2024). The group employs over 820 staff (Dec 2025), including ~50 apprentices, and is led by managing shareholders Susanne Gräfin Kesselstatt and Georg Graf Kesselstatt alongside divisional MDs Markus Elsen (Verkehrswegebau) and Christian Rebmann (Baustoffe). No external private equity or institutional investor involvement is evidenced; ownership remains wholly within the founding family.

Name

Storz

Legal name

J. Friedrich Storz GmbH & Co. KG

Website

https://storz-tuttlingen.de

Company type

Private

Founded year

1927

Operating status

Operating

Headcount range

501–1,000 employees

Short description

J. Friedrich Storz is a third-generation, family-owned German road construction and civil engineering group (Tuttlingen, est. 1927, 820+ employees) delivering integrated infrastructure services — paving, bridges, tunnels, asphalt production, aggregates, and environmental works — primarily to public-sector clients in southern Baden-Württemberg and eastern Switzerland.

Ownership category

akta.pro rank

Product category

Road Construction & Civil Engineering

NAICS

Other Heavy and Civil Engineering Construction (237990), Other Heavy and Civil Engineering Construction (2379), Site Preparation Contractors (23891), Poured Concrete Foundation and Structure Contractors (23811)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Concrete, Gypsum & Plaster Products (3270), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Commercial General Contracting (New Build) (IMAFAAAA)

akta.pro secondary industries

Site Access & Temporary Roads / Working Platforms (IMAFAKAO), Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE)

Keywords

• Road construction services
• Civil engineering
• Asphalt production
• Construction materials
• Bridge restoration

Headquarters

HQ city

Tuttlingen

HQ country

Germany

HQ region

Europe

Offices19 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Road and Civil Engineering Construction: Core revenue stream from road construction, civil engineering, paving, and bridge restoration projects. Services provided to public authorities (federal, state, municipal) and private investors.
2. Building Materials Production and Sales: Production and sale of construction materials including aggregates, gravel, sand, and asphalt from own quarries and mixing plants. Supplies both internal construction operations and external customers.
3. Environmental Services: Environmental technology services including waste disposal, land recycling, contaminated site remediation, and landfill construction through Convia Geo Consult GmbH.
4. Logistics and Transportation: Transportation and logistics services for construction materials via Convia Logistik GmbH & Co. KG, including fleet management and just-in-time delivery to construction sites.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

Storz is a family-owned German construction group that builds roads, civil engineering works, paving, bridges, landfills, and outdoor facilities, while also extracting, processing, and producing its own construction materials such as aggregates and asphalt. It operates a vertically integrated model spanning construction services, materials production (gravel works, asphalt mixing plants), construction materials laboratory testing, environmental services and disposal, logistics, and a vehicle/tire workshop, serving public and private clients primarily in Southwest Germany and Eastern Switzerland.

Product overview

STORZ operates as a comprehensive civil engineering and construction materials company with two main business pillars: STORZ VERKEHRSWEGEBAU (road construction) and STORZ BAUSTOFFE (construction materials). The company offers a full-spectrum service portfolio spanning road and civil engineering, major infrastructure projects, raw material extraction, asphalt production, environmental technology, and logistics. Services are delivered through seven regional branches in southern Baden-Württemberg, Germany, and operations extend to eastern Switzerland. The portfolio includes proprietary asphalt mixing plants, gravel/crushing works, construction materials laboratories, and specialized divisions for bridge/infrastructure restoration, environmental services, and waste management. Recent acquisitions (Kieswerke Kohler 2025, Gartenbau Schöppler 2020) have expanded capabilities into landscape gardening and aggregate recycling.

Differentiator

Problem solved

Functional benefit

Brands

• CONVIA: Umwelttechnik, Logistik, Bau und Geo-Consult subsidiary brand encompassing environmental technology, logistics, construction, and geo-consulting services.

Products and services

• Road and Civil Engineering Construction (Straßen- und Tiefbau) End-to-end construction of roads and civil engineering works, including earthworks, substructure, and surfacing, for public infrastructure clients and private developers.
• Major Projects (Großprojekte) Delivery of large, complex infrastructure projects such as motorway sections, exemplified by the roughly €106 million A81 contract with DEGES, requiring dedicated project teams and large equipment fleets.
• Construction Area Development (Baugebietserschließung) Site preparation and development services for new residential and commercial areas, including earthworks, drainage, and access roads.
• Outdoor Facilities (Außenanlagen) Construction of outdoor areas including yards, parking, driveways, and external site works for commercial, industrial, and public buildings.
• Paving (Pflasterbau) Construction of paved surfaces including streets, plazas, and walkways using concrete or stone pavers, sold to municipalities and private developers.
• Bridge and Structure Restoration (BWI / Bauwerkinstandsetzung) Restoration, repair, and rehabilitation of bridges, retaining structures, and other civil engineering structures for public-sector owners.
• Raw Material Extraction and Processing (Rohstoffgewinnung / Rohstoffveredelung) Extraction and processing of mineral raw materials for use as construction aggregates, operated under the STORZ Baustoffe division.
• Gravel / Crushing Works (Schotterwerke) Operation of gravel and crushing plants producing graded aggregates and crushed stone sold to construction clients.
• Asphalt Mixing Plants (Asphaltmischanlagen) Operation of asphalt mixing plants producing hot-mix and recycled asphalt for road construction projects and external buyers.
• Construction Materials Laboratory (Baustofflabor) In-house laboratory testing of construction materials, supporting quality assurance for both internal projects and external customers.
• Environmental Technology and Disposal (Umwelttechnik / Entsorgung) Environmental services including handling, treatment, and disposal of construction and excavation materials for public and private clients.
• Landfill Construction (Deponiebau) Construction of landfills and related sealing, drainage, and infrastructure works for municipal and private waste-management operators.
• Construction Logistics (Logistik) Transport and logistics services for construction sites and construction materials, supporting internal projects and external customers.
• Workshop, Service and Tire Trade (Werkstatt/Service/Reifenhandel) Vehicle workshop, equipment servicing, and tire trade services for trucks, construction machinery, and external fleet operators.
• Garden and Landscape Architecture (Garten- und Landschaftsbau) Landscape and garden construction services including planting, green areas, and recreational outdoor works for municipalities and private clients.
• CONVIA Bau AG Construction Services (Switzerland) Construction services delivered through the Swiss subsidiary CONVIA Bau AG, extending Storz's presence into Eastern Switzerland with local civil engineering and road construction offerings.

Quantifiable outcome

• ~7,500 tonnes CO2 saved since 2014 through energy management
• +2 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• DEGES (Deutsche Einheit Fernstraßenplanungs- und -bau GmbH)coreStrategic or Co-development Partner · 24 September 2024STORZ received its largest contract in company history from DEGES - the €106 million A81 expansion project. STORZ serves as technical lead in the ARGE consortium with Eurovia for this major highway project.
• EuroviacoreStrategic or Co-development Partner · 24 September 2024ARGE partnership with Eurovia for the A81 expansion project. STORZ provides technical leadership while Eurovia collaborates on execution of the €106 million project.
• SchleithminorStrategic or Co-development PartnerARGE partnership for Konstanz train station square project where STORZ served as lead contractor with Schleith as consortium partner.
• Hochschule BiberachminorStrategic or Co-development PartnerAcademic partnership for dual study program (Bauingenieur Plus) and research collaboration; STORZ participates in student thesis supervision and practical training.
• Bauwirtschaft BWminorStrategic or Co-development PartnerPartnership with Baden-Württemberg construction industry association for dual study program coordination and industry collaboration.
• Bundesministerium für Verkehr und digitale Infrastruktur (BMVI)minorOthersGovernment ministry overseeing federal infrastructure projects; STORZ works on federal road projects under ministry jurisdiction.

Scale indicators9 records

Recent moves10 records

Expansion highlights6 records

Regional players

• Heijmans: Dutch construction company with road construction and civil engineering operations. Comparable in service offering and business model, but operates primarily in Netherlands rather than competing directly in STORZ's German/Swiss territory.

Direct peers

• Leonhard Weiss: German family-owned general contractor with major road construction, civil engineering, and building materials operations across southern Germany. Closely comparable to STORZ in ownership structure (multi-generational family), vertical integration model, and regional infrastructure focus.
• Max Bögl: Large German family-owned construction and infrastructure company with road construction, civil engineering, and building materials operations. Comparable vertically integrated model and family-ownership governance.
• Kutter HmbH & Co. KG: German road construction and civil engineering contractor with comparable regional focus and service portfolio. Similar family-owned structure and regional infrastructure project mix.
• Bunte Bauunternehmung: German construction company specializing in road construction, civil engineering, and infrastructure projects. Comparable regional German contractor profile with similar mix of public-sector clients and civil engineering focus.
• HEITKAMP Erd- und Straßenbau: Mid-sized German road and earthworks contractor with similar regional infrastructure focus. Comparable in scale and service offering, particularly in road construction and earthworks.

Broad incumbents

• Eurovia (VINCI): European road construction and infrastructure subsidiary of VINCI; STORZ's actual ARGE partner on the €106M A81 project. Comparable scope in road construction, asphalt production, and aggregates across Europe.
• STRABAG: One of Europe's largest construction groups with significant road and civil engineering operations in Germany. Comparable core services including asphalt, earthworks, and large infrastructure projects, but at much larger scale and broader geographic reach.
• Eiffage Infrastructures: French construction group with significant German road and civil engineering operations. Comparable in road construction, asphalt production, and infrastructure services but operates at larger scale across multiple European markets.

Others

• Gebr. Stumpp GmbH & Co. KG: German construction company that sold AWZ Asphaltmischwerk Zimmern to STORZ in 2026. Comparable in road construction and asphalt production capabilities, with direct prior business relationship as seller of divested assets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/STORZ.Verkehrswegebau

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries7 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 Storz