CONTRUCTORA DIAZ & OSSANDON SPA: public contracts won without a rival in Chile: 6 uncontested awards; 30% of its awards; 1 without a competition; 5 single bid.
Assay record ASY-CL-1SFG1TV1LK · Cite as: Assay Systems, “CONTRUCTORA DIAZ & OSSANDON SPA: public contracts won without a rival in Chile”, https://assay-systems.com/register/cl/uncontested/s/contructora-diaz-amp-ossandon-spa/
CONTRUCTORA DIAZ & OSSANDON SPA won 6 of its 20 public contract awards in Chile without a rival from 2024-03-21 to 2026-05-05: 1 without a competition and 5 after a competition that drew a single bid. 5 buyers awarded it without a rival, the largest I MUNICIPALIDAD DE CANELA with 2.
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.
I MUNICIPALIDAD DE CANELA gave CONTRUCTORA DIAZ & OSSANDON SPA 2 awards: 1 without a competition, 1 after a competition with a single bid. First 2024-08-01, latest 2024-10-22.
I MUNICIPALIDAD DE CONCON gave CONTRUCTORA DIAZ & OSSANDON SPA 4 awards: 0 without a competition, 1 after a competition with a single bid. First 2024-03-21, latest 2024-07-30.
I MUNICIPALIDAD DE SANTO DOMINGO gave CONTRUCTORA DIAZ & OSSANDON SPA 1 award: 0 without a competition, 1 after a competition with a single bid. First 2026-02-11, latest 2026-02-11.
I MUNICIPALIDAD DE ZAPALLAR gave CONTRUCTORA DIAZ & OSSANDON SPA 1 award: 0 without a competition, 1 after a competition with a single bid. First 2026-05-05, latest 2026-05-05.
I MUNICIPALIDAD DE OLMUE gave CONTRUCTORA DIAZ & OSSANDON SPA 5 awards: 0 without a competition, 1 after a competition with a single bid. First 2025-02-12, latest 2025-12-30.
| Date | Buyer | How | Stated reason |
|---|---|---|---|
| 2026-05-05 | I MUNICIPALIDAD DE ZAPALLAR CL-9650984 | Single bid Licitación Pública Entre 100 y 1000 UTM (LE) | — |
| 2026-02-11 | I MUNICIPALIDAD DE SANTO DOMINGO CL-9617732 | Single bid Licitación Pública Entre 100 y 1000 UTM (LE) | — |
| 2025-12-30 | I MUNICIPALIDAD DE OLMUE CL-9611398 | Single bid Licitación Pública Entre 100 y 1000 UTM (LE) | — |
| 2024-10-22 | I MUNICIPALIDAD DE CANELA CL-51487576 | No competition direct | — |
| 2024-08-01 | I MUNICIPALIDAD DE CANELA CL-9306512 | Single bid Licitación Pública Mayor 1000 UTM (LP) | — |
| 2024-06-26 | I MUNICIPALIDAD DE CONCON CL-9353270 | Single bid Licitación Pública Mayor a 5000 (LR) | — |
Every uncontested award in Chile · All countries · CONTRUCTORA DIAZ & OSSANDON SPA in the register
Source: ChileCompra / Mercado Público open data (purchase orders and tenders). 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.