CONSTRUCTORA SIROZ LIMITADA: public contracts won without a rival in Chile: 8 uncontested awards; 67% of its awards; 1 without a competition; 7 single bid.
Assay record ASY-CL-1OLME2H0VG · Cite as: Assay Systems, “CONSTRUCTORA SIROZ LIMITADA: public contracts won without a rival in Chile”, https://assay-systems.com/register/cl/uncontested/s/constructora-siroz-limitada/
CONSTRUCTORA SIROZ LIMITADA won 8 of its 12 public contract awards in Chile without a rival from 2024-02-20 to 2026-05-04: 1 without a competition and 7 after a competition that drew a single bid. 4 buyers awarded it without a rival, the largest I MUNICIPALIDAD DE LA FLORIDA with 3.
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 LA FLORIDA gave CONSTRUCTORA SIROZ LIMITADA 3 awards: 0 without a competition, 3 after a competition with a single bid. First 2024-02-20, latest 2026-03-09.
I MUNICIPALIDAD DE BUIN gave CONSTRUCTORA SIROZ LIMITADA 4 awards: 0 without a competition, 2 after a competition with a single bid. First 2024-06-17, latest 2026-05-04.
ILUSTRE MUNICIPALIDAD DE MELIPILLA gave CONSTRUCTORA SIROZ LIMITADA 2 awards: 1 without a competition, 1 after a competition with a single bid. First 2024-03-22, latest 2026-03-26.
I MUNICIPALIDAD DE CALERA DE TANGO gave CONSTRUCTORA SIROZ LIMITADA 1 award: 0 without a competition, 1 after a competition with a single bid. First 2024-03-05, latest 2024-03-05.
| Date | Buyer | How | Stated reason |
|---|---|---|---|
| 2026-03-26 | ILUSTRE MUNICIPALIDAD DE MELIPILLA CL-9628692 | Single bid Licitación Pública Entre 100 y 1000 UTM (LE) | — |
| 2026-03-09 | I MUNICIPALIDAD DE LA FLORIDA CL-9602619 | Single bid Licitación Pública Mayor 1000 UTM (LP) | — |
| 2025-04-25 | I MUNICIPALIDAD DE BUIN CL-9494512 | Single bid Licitación Pública Mayor 1000 UTM (LP) | — |
| 2025-01-13 | I MUNICIPALIDAD DE BUIN CL-9441487 | Single bid Licitación Pública entre a 2000 y 5000 UTM (LQ) | — |
| 2024-06-24 | I MUNICIPALIDAD DE LA FLORIDA CL-9351693 | Single bid Licitación Pública entre a 2000 y 5000 UTM (LQ) | — |
| 2024-03-22 | ILUSTRE MUNICIPALIDAD DE MELIPILLA CL-50104915 | No competition direct | — |
Every uncontested award in Chile · All countries · CONSTRUCTORA SIROZ LIMITADA 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.