Our History.

In 1961, Theodor Fink founded a small civil engineering business in Waldshut-Tiengen. His son Max took over and continued the work. When Uwe Klefenz joined as Managing Director and Partner, a new chapter began – and when he took full ownership, "Fink & Klefenz" became today's Klefenz GmbH. Over six decades, it has grown into a company with over 200 employees, own locations in southern Germany, its own gravel pit and its own recycling facility. What has remained is the family leadership – and the understanding that in civil engineering, a managing director's word counts for more than any contract.

1961. Company founded by Theodor Fink

1999. Max Fink leaves the company as managing director & co-partner.

1994. Uwe Klefenz joins the company as managing director & co-partner.

2001. Change of company name

1974.1974. Company handover from Theodor Fink to his son Max Fink

2014 & 2017.

2012. Eröffnung des Standorts in Zwickau & Erweiterung in Gurtweil.

Start with the mining of gravel in our gravel pit in Rheinheim. There was also an enlargement of our building yard.

2021. Extension in Germersheim for the “DB Digitale Schiene” project

2022. Founding of Klefenz Rail-Service GmbH.

Mit der Gründung der KRS GmbH Klefenz Rail-Services als eigenständige Schwestergesellschaft bündeln wir unsere Expertise im Bereich gleisgebundener Baumaschinen. Heute ECM-zertifiziert nach DVO (EU) 2019/779.

2017. Founding of the “Backbone-Landkreis Waldshut” construction project

2026. Extension of our office in Gurtweil.

2025. Neuer Standort in Asperg

What has grown from it.

Out of many stages, something more than just a growing business has emerged. Over the years, a self-understanding has developed that still carries us today: working with both feet on the ground, taking on responsibility and never losing sight of our own standards. What brought us here also shapes how we think and act today – clear in our principles, open in our development and driven to make what already works even better.

Let's Build Something Together.

Whether you are planning a demanding construction project or looking for a new career path – Klefenz stands for experience, reliable collaboration and a clear commitment to quality. If you want to realise a project with us or become part of our team, we look forward to starting the conversation and taking the next step together.

Mitarbeiter in Klefenz Kleidung auf der Baustelle im Einsatz.
Mitarbeiter der Klefenz GmbH vor einer Baumaschine auf dem Betriebsgelände.
Bauarbeiter in Warnweste auf Baustelle von hinten fotografiert
Our Services
Eleven trades under one roof – from track construction to civil engineering, cable installation and fibre-optic network expansion.
Luftaufnahme eines Rohstoffabbaus der Klefenz GmbH mit Baggern und Fördertechnik.
Sustainability
Our own gravel pit, our own recycling facility, closed material cycles – how Klefenz puts the circular economy into practice.
Zwei Mitarbeiter der Klefenz GmbH im Planungsgespräch mit Bauunterlagen im Büro.
Certifications
Deutsche Bahn certified partner, ECM under EU Regulation 2019/779 – qualifications that matter in every tender.