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2025-0376, Steelworks, NaturGut Ophoven, Talstraße 4, 51379 Leverkusen
2025-0376, Stahlbauarbeiten, NaturGut Ophoven, Talstraße 4, 51379 Leverkusen — original title
Your path to submission
- Deadline: 16 November at 10:00 — 15 days left.
- You submit on evergabe.NRW — 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
The NaturGut Ophoven is an environmental education center in Leverkusen-Opladen, which offers numerous educational programs on nature, energy, climate and environmental protection and is available to the Leverkusen population as a place of recreation and learning. On a listed estate, the Ophoven estate, in the middle of a 60,000 square meter nature adventure park, the environmental center consists of several parts of the building. On the property, Talstr. 4, 51379 Leverkusen, there are a total of six buildings, castle, administration, exhibition, barn, greenhouse and a bicycle carport from various years of construction. The NaturGut has been severely damaged by the flood in 2021. Due to the high degree of destruction of the technology, a replanning of the entire site was created. The outdated technology and the room requirements were updated in planning terms and a fire protection…
Show full description
… reassessment was carried out. This invitation to tender calls for tenders for steel construction works. · 2 steel platforms: Cut two single-storey steel platforms from existing profiles IPE 330 / IPE 160 / HEB 160, weld head and foot plates, weld vouten, mount in an unheated barn. 1 x Dimensions H = approx. 2.65 m, W = approx. 4.72 m, L = approx. 5.60 m 1 x Dimensions H = approx. 2.65 m, W = approx. 4.72 m, L = approx. 7.86 m 6 Stairs: Three single-storey staircases with railings for accessing the stages. 34 m Two single-storey, straight-three-way staircases with intermediate landings, with railings, as escape stairs in buildings, One single-storey, straight-two-way staircase with intermediate landing, with railings, as main development in buildings, reinforcements of stairholes about 11.50 m Two single-storey staircases with railings in the outside space. The refurbishment measures mainly relate to the exhibition and barn and are supplemented by the new building North as the end of the courtyard and the new building East as a replacement area for the shifted technical areas. For the refurbishment and expansion of the site, there are various requirements, such as monument protection, soil monument, landscape protection, flood protection, etc. to be observed. For this purpose, various requirements have been laid down in the building permit, such as a rural monitoring plan, ecological and archaeological monitoring of the building and an alarm plan, which must be taken into account.
Contract
Type of service
Clement What the numbers say about this buyer
- In this sector the buyer awards roughly every month (11 awards, most recently October 2026) — the next award is due around November 2026 by that rhythm. The last award went to TENT DIMENSIONS GmbH.n = 11
- 25% of this buyer's awards went to companies that had already won here before (17 awards since 2026, spread over 11 companies). That is well below the sector norm (40%) — this buyer switches suppliers more often than others.n = 17 awards since 2026
- The median procedure drew 7 bids (11 procedures with a bid count); 0% ended with a single bidder. Sector: median 4 bids.n = 11
- From notice to award takes a median 16 days here (6 procedures). Sector: 84 days.n = 6
- Across 27 procedures with structured selection criteria, this buyer most often required: Share of subcontractors (27 of 27), Professional liability insurance (26 of 27), Trade register enrolment (26 of 27), Minimum turnover in the contract field (24 of 27).n = 27
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
Angabe der technischen Fachkräfte (Bauleistungen) (Auf Anforderung der Vergabestelle; Keine oder anderweitige Formerfordernis): Angabe der technischen Fachkräfte oder der technischen Stellen, unabhängig davon ob sie dem Unternehmen angehören oder nicht, insbes… read in fullcollapse
Formblatt 233 VVB Verzeichnis der Nachunternehmerleistungen - Leistungsbenennung Bauleistungen (sofern beabsichtigt) (Mit dem Angebot; Mittels Eigenerklärung): Erklärung, ob die Unternehmerin / der Unternehmer Teile des Auftrages unter Umständen als Unterauftr… read in fullcollapse
Formblatt 233 VVB Verzeichnis der Nachunternehmerleistungen - namentliche Benennung (sofern beabsichtigt) (Auf Anforderung der Vergabestelle; Keine oder anderweitige Formerfordernis): Angabe, welche Nachunternehmen (namentliche Benennung) die Unternehmerin / d… read in fullcollapse
Formblatt 235 VVB Verzeichnis der Leistungen / Kapazitäten anderer Unternehmen (sofern beabsichtigt) (Mit dem Angebot; Mittels Eigenerklärung): Erklärung zur Inanspruchnahme von Kapazitäten anderer Unternehmen (Eignungsleihe); sofern die Bietenden nicht über d… read in fullcollapse
Formblatt 236 VVB Verpflichtungserklärung anderer Unternehmen (sofern beabsichtigt) (Mit dem Angebot; Mittels Eigenerklärung): Falls für diesen Auftrag im Hinblick auf die erforderliche wirtschaftliche und finanzielle oder technische und berufliche Leistungsfä… read in fullcollapse
Nachweis / Erklärung zur Berufs- bzw. Betriebshaftpflichtversicherung (EU) (Auf Anforderung der Vergabestelle; Mittels Dritterklärung): Nachweis einer Berufs- bzw. Betriebshaftpflichtversicherung je Versicherungsfall mit mindestsens den nachfolgend als Mindest… read in fullcollapse
Nachweis der Eintragung in das Berufs- oder Handelsregister oder der Handwerksrolle (EU) (Auf Anforderung der Vergabestelle; Mittels Dritterklärung): Nachweis der Eintragung in das Berufs- oder Handelsregister oder der Handwerksrolle des Firmen- oder Wohnsitze… read in fullcollapse
Referenzangaben (Bauleistungen EU) (Auf Anforderung der Vergabestelle; Keine oder anderweitige Formerfordernis): Angaben über die Ausführung von Leistungen in den letzten bis zu drei abgeschlossenen Kalenderjahren, die mit der zu vergebenden Leistung vergleich… read in fullcollapse
Referenzbescheinigungen (Bauleistungen EU) (Auf Anforderung der Vergabestelle; Mittels Dritterklärung): Für die wichtigsten Bauleistungen sind Bescheinigungen über die ordnungsgemäße Ausführung und das Ergebnis beizufügen. Für die wichtigsten Bauleistungen sin… read in fullcollapse
Nachweis / Erklärung zur Berufs- bzw. Betriebshaftpflichtversicherung EU - Nachweis einer Berufs- bzw. Betriebshaftpflichtversicherung je Versicherungsfall mit mindestsens den nachfolgend als Mindeststandards geforderten Deckungssummen. Sofern der Nachweis noc… read in fullcollapse
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 |
|---|---|---|
| HaWi Gebäudetechnik GmbH · Köln - Ostheim | 2 | 2026 |
| Di Carlo Stuck und Putz GmbH | 2 | 2026 |
| TENT DIMENSIONS GmbH | 2 | 2026 |
| Gebäudeservice Dietrich West KG | 2 | 2026 |
| SBS Special-Bautenschutz-Service GmbH · Mülheim an der Ruhr | 1 | 2026 |
Tactics
When this buyer has awarded in this sector, usually 7 or more bids came in. Many compete here — price and references decide. (Based on 11 completed awards — not a statement about this procedure.)
This procedure allows 32 days between publication and deadline — typical in this country is 32 (median of 20,496 procedures). A normal window for this market.
The deadline falls on a Monday — your last full working day is the Friday before. Have evidence and guarantees together by Thursday.
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
Guide: how to apply on cosinex Vergabemarktplatz / DTVP → Registration, signature, fees — from the operator's bidder manual.
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