Kollmer Bohr und Tiefbau GmbH is a medium-sized construction company operating predominantly in southern Germany, whose service scope covers nearly all key areas of civil and specialist civil engineering. The company performs especially pipeline construction (district heating, gas, water), cable trenching and cable installation, horizontal drilling, sewerage and general civil and concrete works, and executes main construction trades mainly with its own qualified staff. In the 2024 financial year the company recorded revenues of €17.6m and total output of €25.2m, with the cable trenching/cable installation segment accounting for 52% of revenues. As a "Preferred Supplier" of Deutsche Telekom, Kollmer GmbH holds several large framework agreements mainly in northern and eastern Bavaria and employed on average 208 people in 2024. Kollmer Bohr und Tiefbau GmbH is a family business.
Durchführung von Tiefbauarbeiten aller Art, insbesondere Leitungs- und Kabelbau, sowie Bohr- und Sprengarbeiten
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Source: German Commercial Register (Handelsregister) Weiden i. d. OPf. Local Court, HRB 1858 (as of 20 October 2026)
Source: German Commercial Register (Handelsregister) Weiden i. d. OPf. Local Court, HRB 1858 (as of 20 October 2026)
Source: German Commercial Register (Handelsregister) Weiden i. d. OPf. Local Court, HRB 1858 (as of 20 October 2026)
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Source: German Commercial Register (Handelsregister) Weiden i. d. OPf. Local Court, HRB 1858 (as of 20 October 2026)
