Otto Jung, Bauunternehmung GmbH, based in Troisdorf, conducts construction works of all kinds; construction activities under § 34c of the Trade Regulation Act are explicitly excluded. In the management report the company identifies project developers as its primary client group and reports a historically low workload in building construction for 2024. The company employed an average of 52 people in the reporting year (2023: 62) and highlights its proximity to the metropolitan regions Cologne, Düsseldorf and Bonn as a locational advantage. The company states it operates with a variable cost structure and declines orders that would result in negative contribution margins.
Durchführung von Bauarbeiten aller Art, jedoch mit Ausnahme von solchen Bauarbeiten, die unter § 34 c der Gewerbeordnung fallen.
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) Siegburg Local Court, HRB 4674 (as of 31 October 2026)
| Name | Type | City |
|---|---|---|
| Wolfgang Jung-Köppl | Geschäftsführer(in) | Köln |
Source: German Commercial Register (Handelsregister) Siegburg Local Court, HRB 4674 (as of 31 October 2026)
| Date | Event Type | Event |
|---|---|---|
| 13.03.2023 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| 23.02.2010 | Business Address Registered | Urbacher Straße 2, 53842 Troisdorf |
| 24.05.2002 | Company Name Registered | Otto Jung, Bauunternehmung GmbH |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 13.03.2023 | Capital Decrease | -307.450 € | 25.000 € |
| 05.11.2002 | Capital Increase | +282.450 € | 332.450 € |
| 24.05.2002 | Share Capital Set | — | 50.000 DM |
Source: German Commercial Register (Handelsregister) Siegburg Local Court, HRB 4674 (as of 31 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€5.9M2 | -€139,922 | €4,824,166 | 52 |
| 2023 | Rohergebnis€9.3M2 | €679,483 | €7,090,835 | 62 |
| 2022 | Rohergebnis€11.9M2 | €1,948,049 | €10,849,135 | 63 |
| 2021 | Rohergebnis€11.1M2 | €1,384,102 | €10,331,624 | 65 |
| 2020 | Rohergebnis€13.7M2 | €3,215,833 | €11,189,200 | 65 |
| 2019 | Rohergebnis€9.2M2 | €741,343 | €6,706,748 | 63 |
| 2018 | Rohergebnis€8.6M2 | €333,768 | €5,684,766 | 61 |
| 2017 | Rohergebnis€8.5M2 | €169,537 | €6,110,494 | 61 |
| 2016 | Rohergebnis€8.8M2 | €444,252 | €5,205,116 | 64 |
| 2015 | — | €135,360 | €5,355,224 | 61 |
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) Siegburg Local Court, HRB 4674 (as of 31 October 2026)
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €3,991,669 | 92.6% |
| Depreciation | €251,355 | 5.8% |
| Interest & Similar | €67,059 | 1.6% |
