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KG410 Gas water and drainage systems (sanitary installations) | Köstlinschule
KG410 Gas-Wasser- und Entwässerunsanlagen (Sanitärinstallationen) | Köstlinschule — original title
Your path to submission
- Deadline: 19 November at 23:59 — 19 days left.
- You submit on Vergabemarktplatz (cosinex) — not here and not by e-mail. ↗ Free bidder account on the cosinex platform required (created instantly); offers go through the bidding tool, usually plain text form suffices — no qualified signature. Sort out account and signature first — not on submission day.
- Offer and evidence in: German.
- Collect your evidence — use the eligibility analysis on this page: it lists the requirements and, for known certificates, how to get them.
What the buyer is looking for
Sanitary installations · Wastewater system from mixed installation (SML and PP) Grease separator Wastewater lifting system Drinking water system (stainless steel + multilayer composite pipe) Sanitary items (washing, toilet, urinals) approx. 32 pretexts
Contract
Type of service
Clement What the numbers say about this buyer
- In this sector the buyer awards roughly every 2 months (275 awards, most recently October 2026) — the next award is due around December 2026 by that rhythm. The last award went to Krasniqi Baumanufaktur GmbH.n = 275
- 49% of this buyer's awards went to companies that had already won here before (457 awards since 2021, spread over 226 companies). 51% went to new names.n = 457 awards since 2021
- The award came in at a median 72% of the estimated value (34 awards with both estimate and value) — pricing at the estimate is usually too high here. Sector: 89%.n = 34
- The median procedure drew 3 bids (457 procedures with a bid count); 33% ended with a single bidder. Sector: median 4 bids.n = 457
- Across 21 procedures with structured selection criteria, this buyer most often required: Average minimum annual turnover (19 of 21), References: works (4 of 21), Professional liability insurance (2 of 21), Independent quality certificate (e.g. ISO 9001) (1 of 21).n = 21
From this buyer's documented awards; comparison values from the same sector and country. Not a forecast, not legal advice. As of 01/11/2026.
What you must prove — eligibility criteria
Tender documents — direct download
Who has won at this buyer so far
Across all contract types of this buyer — not just this sector. A city buys software and fire engines through the same purchasing office.
| Company | Awards | Period |
|---|---|---|
| Holzbau Flack | 8 | 2025–2026 |
| Hako GmbH · Stade | 8 | 2025–2026 |
| Toriello GmbH Landschaftspflege | 7 | 2022–2025 |
| Heim GmbH, Garten- und Landschaftsbau | 7 | 2024–2025 |
| Ulrich & Schön GmbH · Fellbach-Schmiden | 6 | 2024–2025 |
How often this buyer tenders this kind of work
Tactics
When this buyer has awarded in this sector, usually about 4 bids came in. A normal field for this market. (Based on 283 completed awards — not a statement about this procedure.)
This procedure allows 31 days between publication and deadline — typical in this country is 32 (median of 20,496 procedures). A normal window for this market.
Foreign bidders
In Germany · Construction work, 687 contracts went to foreign companies over the last 3 years (of 244,229 recorded awards) — mostly from Austria, France, Poland.
Submission language: German.
How to bid
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