| 1 | Sener Aeroespacial Sociedad Anonima. | Spain | Tres Cantos | Calle de Severo Ochoa (pq. Tecnologico de Madrid) 4 | Madrid | 28760 | group.***** | N/A | $0 | 568 | N/A | N/A | N/A |
| 2 | Sener Aeroespacial Sociedad Anonima. | Spain | Cerdanyola del Vallès | Calle Creu Casas I Sicart (parc de L Alba), 86 - 87 | Barcelona | 08290 | N/A | N/A | $0 | 568 | N/A | N/A | N/A |
| 3 | Sener Aeroespacial Sociedad Anonima. | Spain | La Garriga | Calle Ramon Ciurans (pg Industrial Congost), Parc. 4-S | Barcelona | 08530 | N/A | N/A | $0 | 568 | N/A | N/A | N/A |
| 4 | Socotec Engineering Solutions Spain S.L. | Spain | Barcelona | Calle de la Llacuna, 56 - 7 Ed A, P | Barcelona | 08005 | N/A | 2013 | $38,011,704 | 500 | N/A | N/A | B66113457 |
| 5 | Dominion E&C Iberia Sociedad Anonima. | Spain | Bilbao | Plaza Pio Baroja, 3 - 1 Plt | Vizcaya | 48001 | dominion-global.***** | 1991 | $21,162,850 | 212 | N/A | N/A | A48486682 |
| 6 | Bofill Arquitectura SL | Spain | Sant Just Desvern | Avenida Industria 14 | Barcelona | 08960 | ricardobofill.***** | 1991 | $106,433,632 | 200 | N/A | N/A | B59619734 |
| 7 | Batlle I Roig Arquitectura SLP. | Spain | Esplugues de Llobregat | Calle Manuel Florentin Perez 15 | Barcelona | 08950 | batlleiroig.***** | 2016 | $19,051,640 | 200 | N/A | N/A | B66825936 |
| 8 | Architecture Meets Engineering SL. | Spain | Madrid | Calle O'Donnell, 34 - Piso 5 | Madrid | 28009 | morphestudio.***** | 2014 | $10,960,271 | 180 | N/A | N/A | B87009734 |
| 9 | Cafayate Slu | Spain | Barcelona | Calle Providencia, 109 - 2 A | Barcelona | 08024 | N/A | 2004 | $13,914,614 | 180 | N/A | N/A | B63668362 |
| 10 | Empresa Municipal De Promocio Social, Urbana I Economica De Cornella SA. | Spain | Cornellà de Llobregat | Calle Albert Einstein, 47 - 49 | Barcelona | 08940 | auditoricornella.***** | 1986 | $11,012,013 | 128 | N/A | N/A | A58283342 |
| 11 | Servicios Auxiliares De Telecomunicacion SA | Spain | Cornellà de Llobregat | Calle Tirso de Molina 36 | Barcelona | 08940 | N/A | N/A | $0 | 113 | N/A | N/A | N/A |
| 12 | Gabinete De Construccion Y Arquitectura Slp | Spain | Barcelona | Calle Valencia, 289 - Plt Bj | Barcelona | 08009 | gcaarq.***** | 1986 | $13,990,842 | 100 | N/A | N/A | B58291642 |
| 13 | Savills Diseño Y Construccion Barcelona S.A. | Spain | Barcelona | Avenida Diagonal, 609 - 615 | Barcelona | 08028 | electroestimulacionbcn.***** | 2000 | $14,239,478 | 100 | N/A | N/A | A62184239 |
| 14 | Eosol Global Services SL. | Spain | Mutilva | Camino de Labiano, 45 - A Bajo | Navarra | 31192 | grupoeosol.***** | 2009 | $9,809,077 | 100 | N/A | N/A | B71011035 |
| 15 | Vidal Y Asociados Estudio De Arquitectura Slp | Spain | Madrid | Calle Turegano 8 | Madrid | 28035 | N/A | 2003 | $6,066,538 | 100 | N/A | N/A | B83751370 |
| 16 | Acerta Management Services SL. | Spain | Madrid | Calle Comandante Azcarraga, 3 - 6 P | Madrid | 28016 | grupoacerta.***** | 2016 | $247,914 | 99 | N/A | N/A | B87644175 |
| 17 | Barcelona Regional Agencia De Desenvolupament Urba SA | Spain | Barcelona | Calle Numero 60 (sector A Zona Franca), 25 -27 | Barcelona | 08040 | bcnregional.***** | 1993 | $9,544,384 | 97 | N/A | N/A | A60453271 |
| 18 | Tmasd SL. | Spain | Campo Real | Paseo de Pozuelo 21 | Madrid | 28510 | tmasd.***** | 2010 | $3,320,870 | 90 | N/A | N/A | B85941961 |
| 19 | Estudio Lamela S.L.P. | Spain | Madrid | Avenida Arroyo del Santo 4 | Madrid | 28042 | lamela.***** | 1991 | $9,345,626 | 90 | N/A | N/A | B80103732 |
| 20 | Unen Servicios Para La Arquitectura SL | Spain | Madrid | Calle Conde de Peñalver 92 | Madrid | 28006 | unen.***** | 2009 | $31,992,386 | 87 | N/A | N/A | B85690832 |
| 21 | Mace Management Services SA | Spain | Madrid | Calle Albacete, 5 - Plt 7 | Madrid | 28027 | macegroup.***** | 1999 | $6,300,811 | 85 | N/A | N/A | A82363391 |
| 22 | Sociedad Municipal De Gestion Urbanistica De Las Palmas De Gran Canaria SA | Spain | Las Palmas de Gran Canaria | Calle Leon Y Castillo, 270 - Oficinas Municipales | Las Palmas | 35005 | geursa.***** | 2001 | $5,485,242 | 84 | N/A | N/A | A35660844 |
| 23 | Impulso Industrial Alternativo SA | Spain | Posada | Lugar Parque Tecnologico Asturias, Parc. 13 A | Asturias | 33428 | impulso.***** | 1998 | $8,929,452 | 75 | N/A | N/A | A82068446 |
| 24 | Yagu Peix I Peix SL | Spain | Alzira | Calle Dels Sindicats 3 | Valencia | 46600 | N/A | 2006 | $257,750 | 74 | N/A | N/A | B97793251 |
| 25 | Bjarke Ingels Group Architecture Spain SLP. | Spain | Barcelona | Ronda Sant Pere, 56 - Bj | Barcelona | 08010 | N/A | 2018 | $9,229,881 | 67 | N/A | N/A | B88236070 |