In 1961, Theodor Fink founded a small civil engineering company in Waldshut-Tiengen. His son Max continued the business. With the arrival of Uwe Klefenz as managing director and co-partner, a new chapter began – and with his takeover, “Fink & Klefenz” became today’s Klefenz GmbH.
Over more than six decades, the company has grown into an enterprise with more than 200 employees, its own locations in Southern Germany, its own gravel pit and its own recycling yard. What has remained is family leadership – and the understanding that in civil engineering, a managing director’s word carries more weight than any contract.
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
2014 & 2017.
2012. Opening of the Zwickau location and expansion in Gurtweil.
Start of gravel extraction at our gravel pit in Rheinheim. The company yard was also expanded.
2021. Extension in Germersheim for the “DB Digitale Schiene” project
2022. Founding of Klefenz Rail-Service GmbH.
With the founding of KRS GmbH, Klefenz Rail-Service was established as an independent subsidiary, bundling our expertise in rail-mounted construction machinery. Today, the company is ECM-certified in accordance with DVO (EU) 2019/779.
2017. Founding of the “Backbone-Landkreis Waldshut” construction project
2026. Extension of our office in Gurtweil.
2025. New location in Asperg
Many stages have led to more than just a grown company. Over the years, a self-understanding has developed that still shapes us today: working with down-to-earthness, taking responsibility and never losing sight of our own standards. What has brought us here also defines how we think and act today – clear in our attitude, open to development and driven by the will to make what already exists even better.






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.
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