{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T04:58:34Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-PY-1WLL0UM0DN",
    "type": "page",
    "country": "py",
    "name": "DES CONSTRUCTORA S.A: public contracts won without a rival in Paraguay",
    "url": "https://assay-systems.com/register/py/uncontested/s/des-constructora-s-a/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 18,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 45,
        "unit": "percent",
        "display": "45%"
      },
      {
        "label": "without a competition",
        "value": 0,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 18,
        "unit": "count"
      }
    ],
    "text": [
      "DES CONSTRUCTORA S.A won 18 of its 40 public contract awards in Paraguay without a rival from 2016-06-07 to 2025-06-12: 0 without a competition and 18 after a competition that drew a single bid. 4 buyers awarded it without a rival, the largest Municipalidad de Fulgencio Yegros with 15."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2025-06-12",
          "Buyer": "Municipalidad de Moisés Bertoni ocds-03ad3f-468374-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-moises-bertoni/",
          "How": "Single bid open",
          "Stated reason": "Menor cuantía nacional"
        },
        {
          "Date": "2023-08-09",
          "Buyer": "Municipalidad de San Juan Nepomuceno ocds-03ad3f-430259-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-san-juan-nepomuceno/",
          "How": "Single bid open",
          "Stated reason": "Licitación Pública Nacional"
        },
        {
          "Date": "2020-11-23",
          "Buyer": "Municipalidad de Fulgencio Yegros ocds-03ad3f-375649-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-fulgencio-yegros/",
          "How": "Single bid open",
          "Stated reason": "Licitación Pública Nacional"
        },
        {
          "Date": "2020-08-28",
          "Buyer": "Municipalidad de Fulgencio Yegros ocds-03ad3f-374903-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-fulgencio-yegros/",
          "How": "Single bid open",
          "Stated reason": "Concurso de Ofertas"
        },
        {
          "Date": "2019-08-26",
          "Buyer": "Municipalidad de Fulgencio Yegros ocds-03ad3f-359187-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-fulgencio-yegros/",
          "How": "Single bid open",
          "Stated reason": "Concurso de Ofertas"
        },
        {
          "Date": "2018-11-29",
          "Buyer": "Municipalidad de Fulgencio Yegros ocds-03ad3f-346339-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-fulgencio-yegros/",
          "How": "Single bid open",
          "Stated reason": "Concurso de Ofertas"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Paraguay",
        "url": "https://assay-systems.com/register/py/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/py/des-constructora-s-a/"
      },
      {
        "name": "Municipalidad de Fulgencio Yegros",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-fulgencio-yegros/"
      },
      {
        "name": "Municipalidad de San Juan Nepomuceno",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-san-juan-nepomuceno/"
      },
      {
        "name": "Municipalidad de Moisés Bertoni",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-moises-bertoni/"
      },
      {
        "name": "Municipalidad de Tavaí",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-tavai/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-PY-1WLL0UM0DN",
    "cite_as": "Assay Systems, \"DES CONSTRUCTORA S.A: public contracts won without a rival in Paraguay\", https://assay-systems.com/register/py/uncontested/s/des-constructora-s-a/"
  }
}