Company lists · Data refreshed September 2026
Top 25 Sustainability auditors based in Spain
RevenueBase identified 203 sustainability auditors headquartered in Spain as of September 2026 and tracks 25,794 professional contacts across them, including 482 with verified work emails. Madrid is the largest hub.
This list covers sustainability auditors headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest sustainability auditors based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 23,018 contacts → | ||||
Indirect evidence “Calidad y Gestión es una empresa consultora de ámbito internacional especializada en servicios de asesoría en las siguientes áreas: Calidad Medio Ambiente Responsabilidad social…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 961 contacts → | ||||
Indirect evidence “AENOR is a global company, that identifies and helps organizations to overcome relevant competitiveness gaps.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 337 contacts → | ||||
Indirect evidence “Som una empresa especialitzada en sostenibilitat, aliada amb les organitzacions, territoris i persones compromesos amb un món més sostenible, als quals acompanyem en la seva…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 298 contacts → | ||||
Indirect evidence “EQA es una entidad internacional de certificación, verificación e inspección, con más de 25 años de trayectoria.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 174 contacts → | ||||
Indirect evidence “Impulsamos la sostenibilidad empresarial con soluciones técnicas y reales.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 77 contacts → | ||||
Partial evidence “Hi, we’re Sygris, Spain’s leader in sustainability consulting and ESG software.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 30 contacts → | ||||
Indirect evidence “Consultora ambiental y de sostenibilidad social y económica.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 contacts → | ||||
Indirect evidence “EHS TECHNIQUES is a Social, Environmental and Health and Safety consultancy with a team of professionals and associates with a strong experience in providing best available…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 24 contacts → | ||||
Partial evidence “Boost your hotel’s sustainability the smart way.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 contacts → | ||||
Partial evidence “CAVALA es un gabinete de asesoría empresarial que se dedica a la implantación, auditoría y mantenimiento de Sistemas de Gestión de Calidad, Seguridad y Salud en el Trabajo, Medio…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Indirect evidence “BREEAM® (Building Research Establishment Environmental Assessment Methodology) es el método de evaluación y certificación de la sostenibilidad en la edificación técnicamente más…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 19 contacts → | ||||
Indirect evidence “OMAWA es una consultora creada con la vocación de ofrecer un servicio diferente y de alto valor añadido, que permita abordar la SOSTENIBILIDAD en cualquier organización…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Indirect evidence “Ayudamos en la adaptación a la demanda del mercado en materia de sostenibilidad: regulador, consumidor, inversor y mercado.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Indirect evidence “En Emin Energy trabajamos para impulsar un uso más responsable y eficiente de la energía, apoyando a empresas y organizaciones en su transición hacia la sostenibilidad.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 14 contacts → | ||||
Indirect evidence “Argano Asesores somos una empresa valenciana que nace con la misión de ofrecer a nuestros clientes un servicio de calidad y altamente especializado, que les ayude a desarrollar su…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Indirect evidence “AECLU EDIFICACION Y SOSTENIBILIDAD S.L, es una entidad colaboradora para la tramitación de licencias urbanísticas y de declaraciones responsables para el inicio o modificación de…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 12 contacts → | ||||
Partial evidence “Especialistas en la implantación de sistemas de gestión empresarial (calidad, medio ambiente, seguridad y salud labora, energía), realización de auditorías y evaluación de impacto…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 contacts → | ||||
Indirect evidence “Somos una compañía cuya filosofía se basa en ser proactivos y ofrecer a nuestros clientes un servicio integral desde las áreas de la consultoría, formación, innovación, ingeniería…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence “Consultoría y Formación en Calidad, Medioambiente, Prevención de riesgos laborales, Bienestar animal, Aplicador de productos fitosanitarios, Higiene alimentaria, Sector…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Indirect evidence “conese es la firma de consultoría que acompaña a las organizaciones en su camino hacia la integración de la sostenibilidad en su estrategia empresarial.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Indirect evidence “Empresa especializada en Rehabilitación y Edificación Sostenible Certificada en Gestión de la Calidad ISO 9001:2015 y Ecodiseño 14006:2020 Empresa adherida al programa de…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 contacts → | ||||
Indirect evidence “Ingenature | Sostenibilidad estratégica para real estate En Ingenature ayudamos a promotores e inversores a financiar, reducir riesgos y aumentar el valor de sus activos mediante…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “Hoy en día, muchas empresas se enfrentan al reto de ser sostenibles, y el reto es todavía mayor cuando se quiere conseguir sin comprometer la rentabilidad.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Indirect evidence “TRESERRES nace para mejorar el medioambiente a través del asesoramiento a las empresas.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Indirect evidence “Con 25 años de experiencia en #sostenibilidad y más de 300 #reportes en #LATAM, asesoramos a empresas para desarrollar de manera efectiva su gestión de sostenibilidad e integrar…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: sustainability auditors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names sustainability auditors.
- Partial evidence
- Its own public description names part of sustainability auditors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name sustainability auditors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 203 sustainability auditors based in Spain
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Sustainability auditors based in Spain at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 203 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sustainability auditors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Spain whose own description of what they do matches “sustainability auditors”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names sustainability auditors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among sustainability auditors, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 482 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Sustainability auditors by metro
- Sustainability auditors in Madrid53
- Sustainability auditors in Barcelona29
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names sustainability auditors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many sustainability auditors are there based in Spain?
RevenueBase identified 203 sustainability auditors headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Autonomo, headquartered in Cordoba, tops this list with the largest team on record.
Which city has the most sustainability auditors?
Madrid leads with 53 headquartered companies, followed by Barcelona (29) and Valencia (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 482 verified decision-maker contacts tracked across these 203 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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