{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T00:59:56Z",
  "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-ES-12RF3YU0K3",
    "type": "page",
    "country": "es",
    "name": "CONSTRUCTORA DE CALAF, SAU: public contracts won without a rival in Spain",
    "url": "https://assay-systems.com/register/es/uncontested/s/constructora-de-calaf-sau/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 3,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 60,
        "unit": "percent",
        "display": "60%"
      },
      {
        "label": "without a competition",
        "value": 1,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 2,
        "unit": "count"
      }
    ],
    "text": [
      "CONSTRUCTORA DE CALAF, SAU won 3 of its 5 public contract awards in Spain without a rival from 2024-04-10 to 2026-01-22: 1 without a competition and 2 after a competition that drew a single bid. 3 buyers awarded it without a rival, the largest CONSORCI PER A LA GESTIÓ DELS RESIDUS DEL VALLÈS ORIENTAL with 1."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2026-01-22",
          "Buyer": "CONSORCIO PARA LA GESTIÓN DE RESIDUOS DEL VALLÈS ORIENTAL 48088-2026",
          "Buyer link": "https://assay-systems.com/register/es/uncontested/b/consorcio-para-la-gestion-de-residuos-del-valles-oriental/",
          "How": "Single bid open",
          "Stated reason": "—"
        },
        {
          "Date": "2024-05-02",
          "Buyer": "CONSORCI PER A LA GESTIÓ DELS RESIDUS DEL VALLÈS ORIENTAL 259077-2024",
          "Buyer link": "https://assay-systems.com/register/es/uncontested/b/consorci-per-a-la-gestio-dels-residus-del-valles-oriental/",
          "How": "Single bid open",
          "Stated reason": "—"
        },
        {
          "Date": "2024-04-10",
          "Buyer": "Ens d'Abastament d'Aigua Ter Llobregat 209479-2024",
          "Buyer link": "https://assay-systems.com/register/es/uncontested/b/ens-d-abastament-d-aigua-ter-llobregat/",
          "How": "No competition oth-single",
          "Stated reason": "—"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Spain",
        "url": "https://assay-systems.com/register/es/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/es/constructora-de-calaf-sau/"
      },
      {
        "name": "CONSORCI PER A LA GESTIÓ DELS RESIDUS DEL VALLÈS ORIENTAL",
        "url": "https://assay-systems.com/register/es/uncontested/b/consorci-per-a-la-gestio-dels-residus-del-valles-oriental/"
      },
      {
        "name": "CONSORCIO PARA LA GESTIÓN DE RESIDUOS DEL VALLÈS ORIENTAL",
        "url": "https://assay-systems.com/register/es/uncontested/b/consorcio-para-la-gestion-de-residuos-del-valles-oriental/"
      },
      {
        "name": "Ens d'Abastament d'Aigua Ter Llobregat",
        "url": "https://assay-systems.com/register/es/uncontested/b/ens-d-abastament-d-aigua-ter-llobregat/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-ES-12RF3YU0K3",
    "cite_as": "Assay Systems, \"CONSTRUCTORA DE CALAF, SAU: public contracts won without a rival in Spain\", https://assay-systems.com/register/es/uncontested/s/constructora-de-calaf-sau/"
  }
}