Company lists · Data refreshed September 2026

Top 25 Net-zero building design firms based in Spain

Name: Net-zero building design firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 210 companies tracked

RevenueBase identified 210 net-zero building design firms headquartered in Spain as of September 2026 and tracks 787 professional contacts across them, including 84 with verified work emails. Barcelona is the largest hub.

This list covers net-zero building design firms 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 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

210Companies

787Contacts tracked

84Verified emails

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The 25 largest net-zero building design firms based in Spain

Ranked by team size

Top 25 of 210 net-zero building design firms based in Spain, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to net-zero building design firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ingennus	Indirect evidence	Zaragoza, SpainHQ checked Sep 17, 2026	51-200	49 contacts →
	Indirect evidence “Firma internacional de arquitectura sostenible e innovadora.” Source: RevenueBase Database · checked Sep 17, 2026
2	House Habitat	Indirect evidence	Abrera, SpainHQ checked Sep 17, 2026	n/a	37 contacts →
	Indirect evidence “House Habitat construye casas saludables y eficientes energéticamente, con estructura de madera, basadas en la arquitectura bioclimática, siguiendo los criterios del estándar…” Source: RevenueBase Database · checked Sep 17, 2026
3	Binarq Arquitectos	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	34 contacts →
	Indirect evidence “Creamos Arquitectura Innovadora y Sostenible para Promotores e Inversores, que mejora la calidad de vida de las personas.” m2 saludable + m2 eficiente = m2 inteligente Algunos de…” Source: RevenueBase Database · checked Sep 17, 2026
4	Woodea	Indirect evidence	Paterna, SpainHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Somos una constructora de baja huella de carbono, nos apoyamos en las herramientas y desarrollos del s.” Source: RevenueBase Database · checked Sep 17, 2026
5	Castaño & Asociados Passivhaus	Indirect evidence	Mijas, SpainHQ checked Sep 17, 2026	1-10	14 contacts →
	Indirect evidence “En CASTAÑO & ASOCIADOS Construcción Sostenible S.L.” Source: RevenueBase Database · checked Sep 17, 2026
6	Naven Ingenieros	Strong evidence	Mutilva, SpainHQ checked Sep 17, 2026	11-50	14 contacts →
	Strong evidence “Naven Ingenieros is an engineering studio, specialized in facilities for new buildings or in rehabilitation: we design all facilities for optimum energy efficiency and encourage…” Source: RevenueBase Database · checked Sep 17, 2026
7	Jg&p Arquitectos	Indirect evidence	Alcorcón, SpainHQ checked Sep 17, 2026	1-10	12 contacts →
	Indirect evidence “Arquitectos especializados en viviendas de consumo casi nulo (nZEB) con certificación Passivhaus.” Source: RevenueBase Database · checked Sep 17, 2026
8	Roibos	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “At Roibos we build your house so it meets your every need.” Source: RevenueBase Database · checked Sep 17, 2026
9	Sgarq Passivhaus Architecture	Indirect evidence	Sitges, SpainHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Estudio de arquitectura Passivhaus, especializado en el diseño y construcción de casas pasivas.” Source: RevenueBase Database · checked Sep 17, 2026
10	Grupo Sima	Indirect evidence	Alcalá De Henares, SpainHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Nuestro propósito, construir edificios de manera sostenible a medida de las necesidades de nuestros clientes.” Source: RevenueBase Database · checked Sep 17, 2026
11	Espacius S.L.P	Indirect evidence	Murcia, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Nos sentimos entusiasmados por la arquitectura sostenible y respetuosa con el medio ambiente.” Source: RevenueBase Database · checked Sep 17, 2026
12	Sunthalpy Engineering	Indirect evidence	Oviedo, SpainHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence “Sunthalpy es una ingeniería que ha creado la vida sostenible que es simplemente mejor en todos los sentidos.+ Economía, gracias a ahorros superiores al 90% y revalorización de los…” Source: RevenueBase Database · checked Sep 17, 2026
13	Emmepolis Novecento	Indirect evidence	Alcobendas, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Ofrecemos soluciones integrales orientadas al máximo confort y la excelencia energética.” Source: RevenueBase Database · checked Sep 17, 2026
14	Vallribera Noray Arquitectes	Indirect evidence	Sabadell, SpainHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Vallribera Noray Arquitectes som un equip expert en dissenyar i construir cases.” Source: RevenueBase Database · checked Sep 17, 2026
15	Bonsai	Partial evidence	Granada, SpainHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Bonsai Architects is an architecture, urban planning and design studio led by two young architects, with a trajectory that goes back to 1965, when architect José Antonio Llopis…” Source: RevenueBase Database · checked Sep 17, 2026
16	Madridarquitectura Proyectos Pasivos, S.L	Indirect evidence	Soto Del Real, SpainHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Estudio de arquitectura y constructora, especialistas en arquitectura pasiva y edificios sostenibles.” Source: RevenueBase Database · checked Sep 17, 2026
17	Zest Architecture	Partial evidence	Barcelona, SpainHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “ZEST architecture is a team of multilingual architects in Barcelona, specialized in the design and construction of beautiful, sustainable and energy efficient homes around the…” Source: RevenueBase Database · checked Sep 17, 2026
18	LA Rachola Cooperativa DE Arquitectura	Indirect evidence	El Prat De Llobregat, SpainHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Diseñamos o rehabilitamos tu vivienda para que sea más eficiente, confortable y saludable.” Source: RevenueBase Database · checked Sep 17, 2026
19	Divers Arquitectura	Indirect evidence	Sabadell, SpainHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Proyectos integrales de obra nueva y reforma, cálculo de estructuras y edificios de consumo energético casi nulo Passivhaus” Source: RevenueBase Database · checked Sep 17, 2026
20	Escaire Arquitectura	Strong evidence	Inca, SpainHQ checked Sep 17, 2026	1-10	2 contacts →
	Strong evidence “We design sustainable buildings that blend modernity and tradition, inspired by the Mediterranean, helping to build a better future.” Source: RevenueBase Database · checked Sep 17, 2026
21	Kromoxoma	Partial evidence	Boadilla Del Monte, SpainHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Small sustainable architecture and design company We use today's technology to realize the dreams of others.” Source: RevenueBase Database · checked Sep 17, 2026
22	Zorzano Passivhaus	Indirect evidence	Agoncillo, SpainHQ checked Sep 17, 2026	11-50	2 contacts →
	Indirect evidence “SOMOS PASSIVHAUS & EFICIENCIA ENERGÉTICA: Pioneros en implantar la construcción del futuro, proyectamos y construimos viviendas bajo el estándar PASSIVHAUS, también conocidas como…” Source: RevenueBase Database · checked Sep 17, 2026
23	Martinez Pacheco Arquitectura	Indirect evidence	Murcia, SpainHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Arquitectura de autor.” Source: RevenueBase Database · checked Sep 17, 2026
24	Krenum	Indirect evidence	Terrassa, SpainHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Somos un estudio de arquitectura donde nuestra misión es empoderar a familias para que puedan materializar sus hogares de ensueño al mismo tiempo que promovemos la sostenibilidad…” Source: RevenueBase Database · checked Sep 17, 2026
25	Archilab7 Design SL	Partial evidence	Costa Teguise, SpainHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “We specialise in eco-smart wellness architectural design and construction of luxury homes and commercial architecture that can deliver: ECO-SMART WELLNESS ARCHITECTURAL DESIGN is…” Source: RevenueBase Database · checked Sep 17, 2026

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: net-zero building design firms. 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 net-zero building design firms.
Partial evidence: Its own public description names part of net-zero building design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name net-zero building design firms. 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 210 net-zero building design firms based in Spain

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Net-zero building design firms based in Spain at a glance

As of Sep 17, 2026

10.7%Verified-email coverage

3.7Average contacts per company

1-10Median size (employees)

12.4%Largest-city concentration · Barcelona

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

173

11-50

51-200

501-1,000

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 210 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 net-zero building design firms, 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 “net-zero building design firms”. 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 net-zero building design firms), 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 net-zero building design firms, 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, 84 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 17, 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.

Net-zero building design firms by metro

Net-zero building design firms in Barcelona26

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 net-zero building design firms, 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 net-zero building design firms are there based in Spain?

RevenueBase identified 210 net-zero building design firms 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?

Ingennus, headquartered in Zaragoza, tops this list with the largest team on record.

Which city has the most net-zero building design firms?

Barcelona leads with 26 headquartered companies, followed by Madrid (20) and Valencia (8).

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 84 verified decision-maker contacts tracked across these 210 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 17, 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.