{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-16T09:57:56Z",
  "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-1JNDJIK177",
    "type": "line",
    "country": "es",
    "name": "Construction work for buildings relating to education and research: Spain public contracts since 2024",
    "url": "https://assay-systems.com/register/es/line/construction-work-for-buildings-relating-to-education-and-research/",
    "text": [
      "Since January 2024 the line carries 135 award notices from 74 buyers. 359 suppliers share it.",
      "34 in 2024. 72 in 2025. 29 in the first 9 months of 2026.",
      "205 of them had no award notice in the register from November 2023 to 2024.",
      "Names every buyer behind the figures and, for each award notice, the supplier, the award date, the notice number and the value where one is disclosed, and the notices behind every figure.",
      "Share of the line held by each of its largest suppliers, by number of award notices, in the TED register for Spain."
    ],
    "records": [
      {
        "name": "all lines",
        "url": "https://assay-systems.com/register/es/"
      },
      {
        "name": "SERVEO SERVICIOS, S.A.U.",
        "url": "https://assay-systems.com/register/es/serveo-servicios-s-a-u/"
      },
      {
        "name": "ASCH INFRAESTRUCTURAS Y SERVICIOS, S.A.",
        "url": "https://assay-systems.com/register/es/asch-infraestructuras-y-servicios-s-a/"
      },
      {
        "name": "CONSTRUCCIONES CALDERON SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/construcciones-calderon-sociedad-limitada/"
      },
      {
        "name": "VIALTERRA INFRAESTRUCTURAS SOCIEDAD ANONIMA",
        "url": "https://assay-systems.com/register/es/vialterra-infraestructuras-sociedad-anonima/"
      },
      {
        "name": "VIVENDIO SOSTENIBILIDAD ENERGÉTICA S.L.",
        "url": "https://assay-systems.com/register/es/vivendio-sostenibilidad-energetica-s-l/"
      },
      {
        "name": "ANFRASA SL",
        "url": "https://assay-systems.com/register/es/anfrasa-sl/"
      },
      {
        "name": "TECSA, EMPRESA CONSTRUCTORA, S.A.",
        "url": "https://assay-systems.com/register/es/tecsa-empresa-constructora-s-a/"
      },
      {
        "name": "UTE ALBAIDA INFRAESTRUCTURAS SA OBRAS Y SERVICIOS PUBLICOS SA",
        "url": "https://assay-systems.com/register/es/ute-albaida-infraestructuras-sa-obras-y-servicios-publicos-sa/"
      },
      {
        "name": "UTE CONSTRUCCIONES GALLARDO BARRERA SOCIEDAD LIMITADA SEDEÑO MUÑOZ SOCIEDAD LIMITADA CONSTRUCCIONES RETORTILLO DOMINGUEZ SL",
        "url": "https://assay-systems.com/register/es/ute-construcciones-gallardo-barrera-sociedad-limitada-sedeno-munoz-sociedad-limitada-construcciones-retortillo-dominguez-sl/"
      },
      {
        "name": "ALTUNA Y URIA, S.A.",
        "url": "https://assay-systems.com/register/es/altuna-y-uria-s-a/"
      },
      {
        "name": "CONSTRUCCIONES ADOLFO SOBRINO, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-adolfo-sobrino-s-a/"
      },
      {
        "name": "ELECNOR SERVICIOS Y PROYECTOS, S.A.U.",
        "url": "https://assay-systems.com/register/es/elecnor-servicios-y-proyectos-s-a-u/"
      },
      {
        "name": "EMPRESA CONSTRUCTORA EJUCA SA",
        "url": "https://assay-systems.com/register/es/empresa-constructora-ejuca-sa/"
      },
      {
        "name": "FERROVIAL CONSTRUCCIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/ferrovial-construccion-s-a/"
      },
      {
        "name": "SERANCO S.A.U.",
        "url": "https://assay-systems.com/register/es/seranco-s-a-u/"
      },
      {
        "name": "UTE GESTION, PROYECTOS Y OBRAS DEL SUR SL ROFEZ CONSTRUCCIONES SL",
        "url": "https://assay-systems.com/register/es/ute-gestion-proyectos-y-obras-del-sur-sl-rofez-construcciones-sl/"
      },
      {
        "name": "UTE MAYFRA OBRAS Y SERVICIOS SOCIEDAD LIMITADA DESARROLLA OBRAS Y SERVICIOS SL",
        "url": "https://assay-systems.com/register/es/ute-mayfra-obras-y-servicios-sociedad-limitada-desarrolla-obras-y-servicios-sl/"
      },
      {
        "name": "ACSA OBRAS E INFRAESTRUCTURAS SAU",
        "url": "https://assay-systems.com/register/es/acsa-obras-e-infraestructuras-sau/"
      },
      {
        "name": "CONSTRUCCIONES AMENABAR SA",
        "url": "https://assay-systems.com/register/es/construcciones-amenabar-sa/"
      },
      {
        "name": "EMPRESA CONSTRUCTORA EJUCA, S.A.",
        "url": "https://assay-systems.com/register/es/empresa-constructora-ejuca-s-a/"
      },
      {
        "name": "ERAIKUNTZA BIRGAIKUNTZA ARTAPENA, S.L.",
        "url": "https://assay-systems.com/register/es/eraikuntza-birgaikuntza-artapena-s-l/"
      },
      {
        "name": "GUAMAR SA",
        "url": "https://assay-systems.com/register/es/guamar-sa/"
      },
      {
        "name": "OBRASCON HUARTE LAIN SA",
        "url": "https://assay-systems.com/register/es/obrascon-huarte-lain-sa/"
      },
      {
        "name": "OBRAS DE CONSTRUCCION E INSTALACIONES S A",
        "url": "https://assay-systems.com/register/es/obras-de-construccion-e-instalaciones-s-a/"
      },
      {
        "name": "ORTHEM SERVICIOS Y ACTUACIONES AMBIENTALES, SAU",
        "url": "https://assay-systems.com/register/es/orthem-servicios-y-actuaciones-ambientales-sau/"
      },
      {
        "name": "ROVER INFRAESTRUCTURAS, S.A.",
        "url": "https://assay-systems.com/register/es/rover-infraestructuras-s-a/"
      },
      {
        "name": "ARCOS 21 PROCON, S.L.",
        "url": "https://assay-systems.com/register/es/arcos-21-procon-s-l/"
      },
      {
        "name": "CITANIAS OBRAS Y SERVICIOS, S.L.U.",
        "url": "https://assay-systems.com/register/es/citanias-obras-y-servicios-s-l-u/"
      },
      {
        "name": "CONSTRUCCIONES SERROT SA",
        "url": "https://assay-systems.com/register/es/construcciones-serrot-sa/"
      },
      {
        "name": "CONSTRUCTORA SAN JOSE, S.A.",
        "url": "https://assay-systems.com/register/es/constructora-san-jose-s-a/"
      },
      {
        "name": "CONTRATAS CENTRO, S.A.",
        "url": "https://assay-systems.com/register/es/contratas-centro-s-a/"
      },
      {
        "name": "CYCASA, CANTERAS Y CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/cycasa-canteras-y-construcciones-s-a/"
      },
      {
        "name": "EDHINOR, S.A.",
        "url": "https://assay-systems.com/register/es/edhinor-s-a/"
      },
      {
        "name": "EIFFAGE INFRAESTRUCTURAS, S.A",
        "url": "https://assay-systems.com/register/es/eiffage-infraestructuras-s-a/"
      },
      {
        "name": "FACTO ALMERIENSE DE CONSTRUCCIONES Y OBRAS PUBLICAS SA",
        "url": "https://assay-systems.com/register/es/facto-almeriense-de-construcciones-y-obras-publicas-sa/"
      },
      {
        "name": "GRUPOCOPSA S.L.",
        "url": "https://assay-systems.com/register/es/grupocopsa-s-l/"
      },
      {
        "name": "JARQUIL CONSTRUCCIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/jarquil-construccion-s-a/"
      },
      {
        "name": "MEDITERRÁNEO SEÑALES MARÍTIMAS, S.L.",
        "url": "https://assay-systems.com/register/es/mediterraneo-senales-maritimas-s-l/"
      },
      {
        "name": "ORTIZ CONSTRUCCIONES Y PROYECTOS SA",
        "url": "https://assay-systems.com/register/es/ortiz-construcciones-y-proyectos-sa/"
      },
      {
        "name": "PROYECON GALICIA,S.A.",
        "url": "https://assay-systems.com/register/es/proyecon-galicia-s-a/"
      },
      {
        "name": "UTE 2007 ALTO LA ERA CONSTRUCCIONES SL CONSTRUCCIONES MANUEL ZAMBRANO SA",
        "url": "https://assay-systems.com/register/es/ute-suministros-asfalticos-sl-construcciones-glesa-sa/"
      },
      {
        "name": "UTE INDENORT-PROVISER",
        "url": "https://assay-systems.com/register/es/ute-indenort-proviser/"
      },
      {
        "name": "VIAS Y CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/vias-y-construcciones-s-a/"
      },
      {
        "name": "ABALA INFRAESTRUCTURAS, S.L.",
        "url": "https://assay-systems.com/register/es/abala-infraestructuras-s-l/"
      },
      {
        "name": "ACCIONA CONSTRUCCIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/acciona-construccion-s-a/"
      },
      {
        "name": "AGUAEMA SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/aguaema-sociedad-limitada/"
      },
      {
        "name": "ALBAIDA INFRAESTRUCTURAS, S.A",
        "url": "https://assay-systems.com/register/es/albaida-infraestructuras-s-a/"
      },
      {
        "name": "BARROSO NAVA Y CIA, S.A.",
        "url": "https://assay-systems.com/register/es/barroso-nava-y-cia-s-a/"
      },
      {
        "name": "BECSA, S.A.",
        "url": "https://assay-systems.com/register/es/becsa-s-a/"
      },
      {
        "name": "CITANIAS OBRAS Y SERVICIOS SL",
        "url": "https://assay-systems.com/register/es/citanias-obras-y-servicios-sl/"
      },
      {
        "name": "COFELY ESPAÑA SA",
        "url": "https://assay-systems.com/register/es/cofely-espana-sa/"
      },
      {
        "name": "CONSTRUCCIONES MARIANO LÓPEZ NAVARRO, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-mariano-lopez-navarro-s-a-u/"
      },
      {
        "name": "CONSTRUCCIONES SÁNCHEZ DOMÍNGUEZ-SANDO, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-sanchez-dominguez-sando-s-a-u/"
      },
      {
        "name": "CONSTRUCCIONES SUKIA SL",
        "url": "https://assay-systems.com/register/es/construcciones-sukia-sl/"
      },
      {
        "name": "CONSTRUCCIONES Y REFORMAS INTEGRALES DEL SUR SL",
        "url": "https://assay-systems.com/register/es/construcciones-y-reformas-integrales-del-sur-sl/"
      },
      {
        "name": "DATATEC INSTRUMENTS S.L",
        "url": "https://assay-systems.com/register/es/datatec-instruments-s-l/"
      },
      {
        "name": "DISEÑO Y OBJETIVOS DE CONSTRUCCION SL",
        "url": "https://assay-systems.com/register/es/diseno-y-objetivos-de-construccion-sl/"
      },
      {
        "name": "DRAGADOS S.A.",
        "url": "https://assay-systems.com/register/es/dragados-s-a/"
      },
      {
        "name": "ELECTRON MEC SRL",
        "url": "https://assay-systems.com/register/es/electron-mec-srl/"
      },
      {
        "name": "FULTON S.A.",
        "url": "https://assay-systems.com/register/es/fulton-s-a/"
      },
      {
        "name": "GESTION, PROYECTOS Y OBRAS DEL SUR SL",
        "url": "https://assay-systems.com/register/es/gestion-proyectos-y-obras-del-sur-sl/"
      },
      {
        "name": "GESTION Y EJECUCION DE OBRA CIVIL, S.A.",
        "url": "https://assay-systems.com/register/es/gestion-y-ejecucion-de-obra-civil-s-a/"
      },
      {
        "name": "GESTIÓN Y EJECUCIÓN DE OBRA CIVIL S.A.U.",
        "url": "https://assay-systems.com/register/es/gestion-y-ejecucion-de-obra-civil-s-a-u/"
      },
      {
        "name": "GRUPO RENDER INDUSTRIAL SL",
        "url": "https://assay-systems.com/register/es/grupo-render-industrial-sl/"
      },
      {
        "name": "ISTEM, S.L.",
        "url": "https://assay-systems.com/register/es/istem-s-l/"
      },
      {
        "name": "IZA OBRAS Y PROMOCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/iza-obras-y-promociones-s-a/"
      },
      {
        "name": "NACIMIENTO, INFRAESTRUCTURAS Y MEDIOAMBIENTE SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/nacimiento-infraestructuras-y-medioambiente-sociedad-limitada/"
      },
      {
        "name": "OBRASCON HUARTE LAIN S.A - Construcciones Sán.chez Dominguez-SANDO, S.A.U. - INNOVACIONES TÉCNICAS Y RECURSOS CONSTRUCTIVOS S.A.",
        "url": "https://assay-systems.com/register/es/obrascon-huarte-lain-s-a-construcciones-san-chez-dominguez-sando-s-a-u-innovaciones-tecnicas-y-recursos-constructivos-s-a/"
      },
      {
        "name": "OCIDE CONSTRUCCION S.A.",
        "url": "https://assay-systems.com/register/es/ocide-construccion-s-a/"
      },
      {
        "name": "PROCYR EDIFICACION Y URBANISMO SL",
        "url": "https://assay-systems.com/register/es/procyr-edificacion-y-urbanismo-sl/"
      },
      {
        "name": "PROFORMA EJECUCIÓN DE OBRAS Y RESTAURACIONES, S.L.",
        "url": "https://assay-systems.com/register/es/proforma-ejecucion-de-obras-y-restauraciones-s-l/"
      },
      {
        "name": "ROFEZ CONSTRUCCIONES SL",
        "url": "https://assay-systems.com/register/es/rofez-construcciones-sl/"
      },
      {
        "name": "TECNOLOGIA DE LA CONSTRUCCION Y OBRAS PUBLICAS, S.A.",
        "url": "https://assay-systems.com/register/es/tecnologia-de-la-construccion-y-obras-publicas-s-a/"
      },
      {
        "name": "UTE BEZEL-SIECSA",
        "url": "https://assay-systems.com/register/es/ute-bezel-siecsa/"
      },
      {
        "name": "UTE COMSA SERVICE FACILITY MANAGEMENT SAU-REFERMO Y OBRAS, S.L.",
        "url": "https://assay-systems.com/register/es/ute-comsa-service-facility-management-sau-refermo-y-obras-s-l/"
      },
      {
        "name": "UTE SEDEÑO MUÑOZ SOCIEDAD LIMITADA CONSTRUCCIONES ANTONIO CABALLERO GALLARDO SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/ute-sedeno-munoz-sociedad-limitada-construcciones-antonio-caballero-gallardo-sociedad-limitada/"
      },
      {
        "name": "UTE VIUDA - LAGUNKETA",
        "url": "https://assay-systems.com/register/es/ute-viuda-lagunketa/"
      },
      {
        "name": "VALTRIA ENGINEERING S A",
        "url": "https://assay-systems.com/register/es/valtria-engineering-s-a/"
      },
      {
        "name": "Vialterra Infraestructuras, S.A.",
        "url": "https://assay-systems.com/register/es/vialterra-infraestructuras-s-a/"
      },
      {
        "name": "2007 ALTO LA ERA CONSTRUCCIONES SL",
        "url": "https://assay-systems.com/register/es/2007-alto-la-era-construcciones-sl/"
      },
      {
        "name": "ACCIONA CONSTRUCCION SA",
        "url": "https://assay-systems.com/register/es/acciona-construccion-sa/"
      },
      {
        "name": "Acciona Esco, S.L.",
        "url": "https://assay-systems.com/register/es/acciona-esco-s-l/"
      },
      {
        "name": "ACEINSA LEVANTE, S.A.",
        "url": "https://assay-systems.com/register/es/aceinsa-levante-s-a/"
      },
      {
        "name": "ACEINSA MOVILIDAD, S.A.",
        "url": "https://assay-systems.com/register/es/aceinsa-movilidad-s-a/"
      },
      {
        "name": "ACEINSA SALAMANCA S.A.",
        "url": "https://assay-systems.com/register/es/aceinsa-salamanca-s-a/"
      },
      {
        "name": "ACTIVIDADES DE INFRAESTRUCTURAS PÚBLICA Y CONSERVACIÓN, S.L.",
        "url": "https://assay-systems.com/register/es/actividades-de-infraestructuras-publica-y-conservacion-s-l/"
      },
      {
        "name": "ADDA OPS SA",
        "url": "https://assay-systems.com/register/es/adda-ops-sa/"
      },
      {
        "name": "ADIANTE INFRAESTRUCTURAS, S.A.-LANTANIA, S.A.U.",
        "url": "https://assay-systems.com/register/es/adiante-infraestructuras-s-a-lantania-s-a-u/"
      },
      {
        "name": "AGRUPACIÓN GUINOVART OBRAS Y SERVICIOS HISPANIA, S.A.",
        "url": "https://assay-systems.com/register/es/agrupacion-guinovart-obras-y-servicios-hispania-s-a/"
      },
      {
        "name": "AGUA RESIDUOS Y MEDIO AMBIENTE, S.A.-CONSTRUCCIONES RUBAU, S.A.",
        "url": "https://assay-systems.com/register/es/agua-residuos-y-medio-ambiente-s-a-construcciones-rubau-s-a/"
      },
      {
        "name": "ALBIADA INFRAESTRUCTURAS, S.A",
        "url": "https://assay-systems.com/register/es/albiada-infraestructuras-s-a/"
      },
      {
        "name": "Alcudia Servicios y Obras, S.L.",
        "url": "https://assay-systems.com/register/es/alcudia-servicios-y-obras-s-l/"
      },
      {
        "name": "ALDESA CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/aldesa-construcciones-s-a/"
      },
      {
        "name": "ALDESA CONSTRUCCIONES, S.A.- AVINTIA PROYECTOS Y CONSTRUCCIONES, S.L.",
        "url": "https://assay-systems.com/register/es/aldesa-construcciones-s-a-avintia-proyectos-y-construcciones-s-l/"
      },
      {
        "name": "Alitek Ingenieria y Pavimentos, S.L.",
        "url": "https://assay-systems.com/register/es/alitek-ingenieria-y-pavimentos-s-l/"
      },
      {
        "name": "Ambling Ingeniería y Servicios SL",
        "url": "https://assay-systems.com/register/es/ambling-ingenieria-y-servicios-sl/"
      },
      {
        "name": "ANEUM LED SL",
        "url": "https://assay-systems.com/register/es/aneum-led-sl/"
      },
      {
        "name": "ANFRASA, S.L.",
        "url": "https://assay-systems.com/register/es/anfrasa-s-l/"
      },
      {
        "name": "ANTONIO GOMILA, S.A.",
        "url": "https://assay-systems.com/register/es/antonio-gomila-s-a/"
      },
      {
        "name": "Api movilidad S.A.",
        "url": "https://assay-systems.com/register/es/api-movilidad-s-a/"
      },
      {
        "name": "ARANSA CONSTRUCCION Y OBRA CIVIL S.A.U.",
        "url": "https://assay-systems.com/register/es/aransa-construccion-y-obra-civil-s-a-u/"
      },
      {
        "name": "ARGOTEK INSTALACIONES, S.L.U.",
        "url": "https://assay-systems.com/register/es/argotek-instalaciones-s-l-u/"
      },
      {
        "name": "ARNO INFRAESTRUCTURAS, S.L.U.",
        "url": "https://assay-systems.com/register/es/arno-infraestructuras-s-l-u/"
      },
      {
        "name": "ASFALTOMEROS, S.A.",
        "url": "https://assay-systems.com/register/es/asfaltomeros-s-a/"
      },
      {
        "name": "ASFALTOS Y CONSTRUCCIONES AITANA, S.L.",
        "url": "https://assay-systems.com/register/es/asfaltos-y-construcciones-aitana-s-l/"
      },
      {
        "name": "Asfaltos y Construcciones Elsan, S.A.U.",
        "url": "https://assay-systems.com/register/es/asfaltos-y-construcciones-elsan-s-a-u/"
      },
      {
        "name": "ASSI DTA, S.L",
        "url": "https://assay-systems.com/register/es/assi-dta-s-l/"
      },
      {
        "name": "ASTECOL INSTALACIONES S.L",
        "url": "https://assay-systems.com/register/es/astecol-instalaciones-s-l/"
      },
      {
        "name": "ATIL-COBRA,S.A.",
        "url": "https://assay-systems.com/register/es/atil-cobra-s-a/"
      },
      {
        "name": "AVANTE CONSTRUCCION, INFRAESTRUCTURAS Y SERVICIOS, S.L.",
        "url": "https://assay-systems.com/register/es/avante-construccion-infraestructuras-y-servicios-s-l/"
      },
      {
        "name": "AVANZASI SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/avanzasi-sociedad-limitada/"
      },
      {
        "name": "AVINTIA PROYECTOS Y CONSTRUCCIONES S.L.",
        "url": "https://assay-systems.com/register/es/avintia-proyectos-y-construcciones-s-l/"
      },
      {
        "name": "BARROSO NAVA Y CÍA, S.A. \"BANASA\"",
        "url": "https://assay-systems.com/register/es/barroso-nava-y-cia-s-a-banasa/"
      },
      {
        "name": "BECSA SA",
        "url": "https://assay-systems.com/register/es/becsa-sa/"
      },
      {
        "name": "BIBIAN MORENO MESSIA OBRAS Y SERVICIOS SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/bibian-moreno-messia-obras-y-servicios-sociedad-limitada/"
      },
      {
        "name": "BIGAS GRUP, S.L.",
        "url": "https://assay-systems.com/register/es/bigas-grup-s-l/"
      },
      {
        "name": "BYCAM + INTXAUSTI ISPASTER",
        "url": "https://assay-systems.com/register/es/bycam-intxausti-ispaster/"
      },
      {
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        "name": "Gallén Trullén y Cía SA",
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  }
}