ZAINTZEN, S.A: public contracts won without a rival in Spain: 3 uncontested awards; 9% of its awards; 0 without a competition; 3 single bid.
Assay record ASY-ES-0SQ8CM80YE · Cite as: Assay Systems, “ZAINTZEN, S.A: public contracts won without a rival in Spain”, https://assay-systems.com/register/es/uncontested/s/zaintzen-s-a/
ZAINTZEN, S.A won 3 of its 32 public contract awards in Spain without a rival from 2023-11-21 to 2025-12-31: 0 without a competition and 3 after a competition that drew a single bid. 3 buyers awarded it without a rival, the largest Ayuntamiento de Barakaldo - Ayuntamiento de Barakaldo with 1.
An award is uncontested when the buyer had no rival offer to weigh: it was made without a competition (direct award, negotiated procedure without a call for tenders, sole-source or advance-notice contract), or a competition was held and only one bid arrived. Every count below is built award by award from the official notices. Awards to individuals are not included.
Ayuntamiento de Barakaldo - Ayuntamiento de Barakaldo gave ZAINTZEN, S.A 1 award: 0 without a competition, 1 after a competition with a single bid. First 2025-12-31, latest 2025-12-31.
Ayuntamiento de Azkoitia - Ayuntamiento de Azkoitia gave ZAINTZEN, S.A 1 award: 0 without a competition, 1 after a competition with a single bid. First 2025-09-04, latest 2025-09-04.
Kabia (Organismo Autónomo de la Diputación Foral De Gipuzkoa) - Kabia gave ZAINTZEN, S.A 11 awards: 0 without a competition, 1 after a competition with a single bid. First 2023-11-21, latest 2025-11-25.
| Date | Buyer | How | Stated reason |
|---|---|---|---|
| 2025-12-31 | Ayuntamiento de Barakaldo - Ayuntamiento de Barakaldo 868523-2025 | Single bid open | — |
| 2025-11-25 | Kabia (Organismo Autónomo de la Diputación Foral De Gipuzkoa) - Kabia 782149-2025 | Single bid open | — |
| 2025-09-04 | Ayuntamiento de Azkoitia - Ayuntamiento de Azkoitia 577244-2025 | Single bid open | — |
Every uncontested award in Spain · All countries · ZAINTZEN, S.A in the register
Source: Tenders Electronic Daily (TED), Publications Office of the European Union, contract award notices. Awards are matched to their buyer and supplier as published. Values in these notices often state a framework ceiling rather than a contract amount, so awards are counted, not summed. Updated 17 October 2026.