Seiler GmbH has operated in turnkey construction for almost 50 years and executes projects in the agricultural, industrial and residential construction sectors. The company handles all project phases autonomously in-house and generates revenues without a field sales force, with holistic project delivery including functional guarantees cited as a unique selling point. Expertise in permitting procedures provides a competitive advantage, and certification as a specialist company under the Water Resources Act benefits agricultural construction projects. Digitalisation measures were advanced in 2023 and ongoing processes and internal workflows are continuously reviewed and optimised. SEILER GmbH is a family business.
Planung, Erstellung und Verkauf von schlüsselfertigen Anlagen in Landwirtschaft, Industrie und Wohnbau.
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) Freiburg Local Court, HRB 580250 (as of 29 October 2026)
| Name | Type | City |
|---|---|---|
| Thomas Glück | Geschäftsführer(in) | Owingen |
| Marco Seiler | Geschäftsführer(in) | Owingen |
Source: German Commercial Register (Handelsregister) Freiburg Local Court, HRB 580250 (as of 29 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€5.9M2 | €431,820 | €8,276,084 | — |
| 2023 | Rohergebnis€5.5M2 | -€277,451 | €6,350,107 | — |
| 2022 | Rohergebnis€6M2 | €282,164 | €7,671,719 | — |
| 2021 | Rohergebnis€6.3M2 | €815,526 | €8,148,647 | — |
| 2020 | Rohergebnis€5.7M2 | €469,642 | €6,721,157 | — |
| 2019 | Rohergebnis€5.4M2 | €257,408 | €5,429,193 | — |
| 2018 | Rohergebnis€5.1M2 | €55,694 | €11,567,478 | — |
| 2017 | Rohergebnis€4.4M2 | -€461,200 | €4,667,287 | — |
| 2016 | Rohergebnis€5M2 | €63,161 | €5,137,036 | — |
| 2015 | Rohergebnis€4.5M2 | -€275,402 | €4,875,060 | — |
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) Freiburg Local Court, HRB 580250 (as of 29 October 2026)
Freihoff Sicherheitsservice GmbH
Langenfeld · Ingenieurbüros für Fachplanung von sonstigen technischen Anlagen
Gartenhöfe GmbH
Leipzig · Ingenieurbüros für bautechnische Gesamtplanung von Ingenieurbauwerken und Verkehrsanlagen
Bernt Lorentz GmbH
Henstedt-Ulzburg · Ingenieurbüros für Fachplanung von sonstigen technischen Anlagen
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €3,713,715 | 95.2% |
| Depreciation | €167,474 | 4.3% |
| Interest & Similar | €20,946 | 0.5% |
