The database of public procurement
Company
KOSS GmbH
KOSS GmbH from Burgwedel has been awarded 27 public contracts since 2009, 18 of them EU-wide up to 2023 (as of 3 Oct 2026).
As of: · Source: official notices (Datenservice Öffentlicher Einkauf, CC0), EU Official Journal (TED) and procurement portals · How we count
Awards per year, 2009 to today
Up to 2023 from the EU Official Journal (only contracts above the EU thresholds), from 2024 from the Datenservice Öffentlicher Einkauf and the portals. 2024: €4,178,500 · 2025: €1,571,622 · 2026: €575,940. The current year is incomplete.
Timeline, 36 months
One dot per award in the month of the notice, sized by value, red when there was only one bid. Click a dot to open the notice.
The network around KOSS
Contracting authorities
Planners and neighbours
Contracting authorities and neighbours from the award notices, planners from the office register, brands from the bills of quantities of the tender before the award. Figures are lots.
Competitors
With count, location and latest award, each with a profile. See everything with Pro
Who wins with the 8 most frequent contracting authorities of this company in Heating, ventilation, plumbing.
References: recently won
| Date | Lot | Contracting authority | Value | Bids |
|---|---|---|---|---|
| 7 Aug 2026 | 26B40110; Landeskriminalamt Nds. / LKA Nds.; Ertüchtigung zum Weiterbetrieb - Teil 2; TeilklimaanlageHeating, ventilation, plumbing · Source (Procurement portal) | Land Niedersachsen vertreten durch das Staatliche Baumanagement NiedersachsenLower Saxony | ||
| 30 Mar 2026 | Zeitvertragsarbeiten Raumlufttechnische Anlagen (ohne Kältetechnik)Heating, ventilation, plumbing · Source (Procurement portal) | Gottfried Wilhelm Leibniz Universität Hannover Stiftung Öffentlichen Rechts/ Dezernat 3, Gebäudemanagement Sachgebiet 36 Vergabe- und VertragswesenLower Saxony | €575,940 | 3 |
| 21 Jul 2025 | Gem. Wennigsen - Neubau Mensa - RLT-Anlage, KältetechnikHeating, ventilation, plumbing · Notice | Gemeinde Wennigsen (Deister)Lower Saxony | €763,102 | 5 |
| 10 Mar 2025 | Offenes Verfahren (EU-weit) zur Vergabe von Wartungs- und weiteren Dienstleistungen an raumlufttechnischen Anlagen und einer Sicherheits-Überdrucklüftungsanlage, Bundessortenamt und Eisenbahn-Bundesamt in Hannover.Building services, other · Notice | Bundesanstalt für ImmobilienaufgabenLower Saxony | €225,122 | |
| 17 Jan 2025 | Gem Bispingen - Lüftungstechnik - ZweiMitMusikHeating, ventilation, plumbing · Notice | Gemeinde BispingenLower Saxony | €583,398 | 9 |
| 16 Dec 2024 | Hallenbad Planetenring: Grundhafte Sanierung - Lüftungsinstallationsarbeiten inkl. WartungHeating, ventilation, plumbing · Notice | Stadt Garbsen Zentrale Vergabestelle 22.10Lower Saxony | €1,118,974 | 5 |
| 18 Nov 2024 | Raumlufttechnische AnlagenHeating, ventilation, plumbing · Source (Municipal website) | Stadt Langenhagen | €47,501 | |
| 21 Mar 2024 | 23E40268; LAVES Haus 1, Braunschweig; Ersatzneubau; Raumlufttechnische AnlageHeating, ventilation, plumbing · Notice | Land Niedersachsen vertreten durch das Staatliche Baumanagement NiedersachsenLower Saxony | €3,012,025 | 4 |
| 22 Oct 2012 | Gerüstbau.Scaffolding · Source (Archive) | Bäder Stadt Nienburg/Weser GmbH | €821,590 | 5 |
The 9 most recent of 9. All with Pro.
EU-wide awards 2006 to 2023
18 awards from 16 contracting authorities, €8,720,598 stated. The most frequent:
Year, contract, contracting authority, value and bids, each award with its source. See everything with Pro
From the EU Official Journal (TED), matched by company key; subsidiaries are not counted. Listed as “Koss GmbH”, 6.8 bids on average.
Questions and answers
How many public contracts has KOSS GmbH won?
KOSS GmbH has received 9 contract awards from public tenders since 2012, most recently on 7 Aug 2026. The notices state a combined value of €7,147,653 (8 of 9 awards state a value). When the company won, there were 5.2 bids on average. The EU Official Journal also lists 18 EU-wide awards between 2009 and 2023.
Which contracting authorities does KOSS GmbH work for most often?
Most awards came from Land Niedersachsen vertreten durch das Staatliche Baumanagement Niedersachsen (2), Stadt Garbsen Zentrale Vergabestelle 22.10 (1) and Bäder Stadt Nienburg/Weser GmbH (1). In total there are 8 contracting authorities.
In which trades does KOSS GmbH win public contracts?
Most awards fall under the trades “Heating, ventilation, plumbing” (7), “Scaffolding” (1) and “Building services, other” (1). The trade is assigned from the CPV code and the title of the lot.
In which German states is KOSS GmbH active?
The awards with a known region came from Lower Saxony (7).