Gruber GmbH, based in Sauerlach, is a specialized construction company operating in the three main business divisions of plant engineering, civil engineering, and wastewater technology. Its service portfolio includes heating and air conditioning technology, microtunneling, and complex sewer rehabilitation for public, industrial, and private clients. With an average workforce of 70 employees, the company focuses on technically demanding infrastructure projects. The strategic orientation aims at quality assurance and the expansion of the wastewater technology department, which has been integrated since 2021. Gruber GmbH is a family business.
Bau und Betrieb für die Bereiche Heizung, Sanitär, Industrieanlagenbau, Rohrleitungsbau, Kanalbau, Microtunneling, Kanalsanierung und Abwassertechnik.
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) München Local Court, HRB 87000 (as of 29 October 2026)
| Name | Type | City |
|---|---|---|
| Erich Gruber | Geschäftsführer(in) | Sauerlach |
Source: German Commercial Register (Handelsregister) München Local Court, HRB 87000 (as of 29 October 2026)
| Date | Event Type | Event |
|---|---|---|
| 02.11.2022 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| 12.02.2021 | Company Name Change | Gruber GmbH |
| 12.02.2021 | Business Purpose Update | Bau und Betrieb für die Bereiche Heizung, Sanitär, Industrieanlagenbau, Rohrleitungsbau, Kanalbau, Microtunneling, Kanalsanierung und Abwassertechnik. |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 02.11.2022 | Capital Decrease | -48.000 € | 52.000 € |
| 05.11.2001 | Share Capital Set | — | 100.000 DM |
| Date | Contract | Value |
|---|---|---|
| 4.11.2026 | Supplier · Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - Einkauf B12 - Vergabestelle Bau | — |
| 14.9.2026 | Supplier · Landeshauptstadt München, Baureferat | 730.783 € |
| 2.12.2025 | Heizung u Kaelteanlagen Supplier · Staatliches Bauamt München 2 | 3.312.115 € |
Source: German Commercial Register (Handelsregister) München Local Court, HRB 87000 (as of 29 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€14.5M2 | €3,249,430 | €11,344,850 | — |
| 2023 | Rohergebnis€8.8M2 | €196,678 | €6,618,482 | — |
| 2022 | Rohergebnis€8M2 | €74,865 | €7,252,665 | — |
| 2021 | Rohergebnis€7.3M2 | €87,156 | €8,496,263 | — |
| 2020 | small company1 | — | €5,245,535 | — |
| 2019 | small company1 | — | €4,590,171 | — |
| 2018 | small company1 | — | €4,998,805 | — |
| 2017 | small company1 | — | €3,816,685 | — |
| 2016 | small company1 | — | €4,368,353 | — |
| 2015 | small company1 | — | €4,418,985 | — |
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) München Local Court, HRB 87000 (as of 29 October 2026)
H & R Industrierohrbau GmbH
Frankfurt am Main · Rohrleitungstiefbau, Brunnenbau und Kläranlagenbau
IDN Infrastruktur-Dienstleistung Niederrhein GmbH
Krefeld · Bau von Versorgungseinrichtungen für Elektrizität und Telekommunikation
ROTUS Rohrtechnik u. Service GmbH
Kassel · Rohrleitungstiefbau, Brunnenbau und Kläranlagenbau
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €6,246,655 | 90.3% |
| Depreciation | €626,482 | 9.1% |
| Interest & Similar | €43,061 | 0.6% |
