CONSTRUCTORA ISACIO VALLEJOS S.A: public contracts won without a rival in Paraguay: 2 uncontested awards; 12% of its awards; 2 without a competition; 0 single bid.
Assay record ASY-PY-1O85KWR1ST · Cite as: Assay Systems, “CONSTRUCTORA ISACIO VALLEJOS S.A: public contracts won without a rival in Paraguay”, https://assay-systems.com/register/py/uncontested/s/constructora-isacio-vallejos-s-a/
CONSTRUCTORA ISACIO VALLEJOS S.A won 2 of its 16 public contract awards in Paraguay without a rival from 2017-10-16 to 2022-03-18: 2 without a competition and 0 after a competition that drew a single bid. 2 buyers awarded it without a rival, the largest Ministerio de Obras Públicas y Comunicaciones (MOPC) 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.
Ministerio de Obras Públicas y Comunicaciones (MOPC) gave CONSTRUCTORA ISACIO VALLEJOS S.A 6 awards: 1 without a competition, 0 after a competition with a single bid. First 2017-10-16, latest 2022-03-18.
Empresa de Servicios Sanitarios del Paraguay (ESSAP) gave CONSTRUCTORA ISACIO VALLEJOS S.A 3 awards: 1 without a competition, 0 after a competition with a single bid. First 2020-01-09, latest 2021-09-10.
| Date | Buyer | How | Stated reason |
|---|---|---|---|
| 2021-05-28 | Ministerio de Obras Públicas y Comunicaciones (MOPC) ocds-03ad3f-398249-1 | No competition direct | Contratación por Excepción |
| 2020-01-09 | Empresa de Servicios Sanitarios del Paraguay (ESSAP) ocds-03ad3f-373799-1 | No competition direct | Contratación por Excepción |
Every uncontested award in Paraguay · All countries · CONSTRUCTORA ISACIO VALLEJOS S.A in the register
Source: contract awards published by the National Directorate of Public Procurement of Paraguay (DNCP) in the Open Contracting Data Standard (data.open-contracting.org), licensed under CC BY 4.0; awards from January 2016 to 30 September 2026, accessed 15 October 2026. It is for non-commercial use and is not part of any paid service. 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.