Prof. Dr. Leopold Mueller - Dipl.-Ing. Adam Hereth Ing.-Buero fuer Tunnel- und Felsbau GmbH is a 1972-founded independent engineering firm headquartered in Freilassing with branch offices in Karlsruhe and Erfurt, project offices and a foreign establishment in Austria. The company provides planning of all types of underground cavities and rock structures, execution supervision, stability assessments, geological preparatory work and advisory services for public clients and private companies, including dispute and arbitration cases. In the 2024 financial year the firm employed an average of 51 staff and is classified as a medium-sized corporation pursuant to § 267 Abs. 2 HGB. The management report states that the company has built a healthy market position over the past decades and focuses strategically on planning, construction supervision and testing services in underground construction.
- baugeologische und ingenieurtechnische Bearbeitung, - Projektierung (Entwurf und Ausführungsplanung), - Überwachung der Ausführung, - Bauoberleitung, - Prüfung in geomechanischer, statischer, konstruktiver und wirtschaftlicher Hin-sicht, - Projektsteuerung von Tunnel-, Fels- und Ingenieurbauten (Brücken, Stützmauern etc.) sowie Planung und Ausführungsüberwachung der dazu gehörigen Straßenbaumaßnahmen
Converted using the official Destatis and Eurostat correspondence tables; ISIC Rev. 4 is the United Nations' international industry classification.
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Source: German Commercial Register (Handelsregister) Traunstein Local Court, HRB 3009 (as of 30 October 2026)
| Name | Type | City |
|---|---|---|
| Sebastian Schwaiger | Geschäftsführer(in) | Freilassing |
| Martin Wagner | Geschäftsführer(in) | Pforzheim |
Source: German Commercial Register (Handelsregister) Traunstein Local Court, HRB 3009 (as of 30 October 2026)
| Date | Event Type | Event |
|---|---|---|
| 24.09.2018 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| 09.01.2018 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| 25.09.2014 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 27.12.2002 | Capital Decrease | -481.950 € | 589.050 € |
| 26.04.2001 | Share Capital Set | — | 1.071.000 DM |
Source: German Commercial Register (Handelsregister) Traunstein Local Court, HRB 3009 (as of 30 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€7.2M2 | €1,300,740 | €54,880,169 | — |
| 2023 | €3,361,432 | €487,108 | €48,871,633 | — |
| 2022 | €5,917,546 | €761,926 | €44,455,809 | — |
| 2021 | Rohergebnis€8.5M2 | €1,201,503 | €42,609,032 | — |
| 2020 | Rohergebnis€7.2M2 | €1,016,735 | €39,491,624 | — |
| 2019 | Rohergebnis€6.1M2 | €694,841 | €36,606,672 | — |
| 2018 | Rohergebnis€6.8M2 | €1,458,015 | €30,133,208 | — |
| 2017 | Rohergebnis€5.1M2 | €95,334 | €28,538,112 | — |
| 2016 | Rohergebnis€6.1M2 | €837,992 | €7,111,334 | — |
| 2015 | Rohergebnis€4.8M2 | €59,710 | €5,997,955 | — |
1 Small companies are not required to publish a profit-and-loss statement (§ 326 (1) HGB). The figure shown is the statutory ceiling under § 267 HGB where the balance-sheet total makes it binding — a company may exceed at most one of the three size criteria.
2 Rohergebnis nach § 276 HGB: Umsatzerlöse abzüglich Materialaufwand bzw. Herstellungskosten. Kleine und mittelgroße Kapitalgesellschaften dürfen diese Posten zusammenfassen; die Umsatzerlöse selbst sind dann nicht veröffentlicht und liegen über dem Rohergebnis.
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Source: German Commercial Register (Handelsregister) Traunstein Local Court, HRB 3009 (as of 30 October 2026)
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €4,422,591 | 97.0% |
| Depreciation | €138,868 | 3.0% |
