Railway infrastructure, energy supply and major municipal projects follow clear rules. Anyone wishing to carry out work in these sectors must be certified, prequalified and pass regular audits. Klefenz has met these requirements for decades – not as an add-on, but as a prerequisite for every tender in which we participate.

Marvin Klefenz
Managing Director

Awards are not a goal for us, but confirmation that reliability, quality and consistent work are being noticed.
Whether it is a demanding construction project or a professional perspective – Klefenz stands for experience, reliable collaboration and a clear commitment to quality. If you would like to realise a project or become part of our company, we look forward to speaking with you and taking the next step together.
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