Company lists · Data refreshed November 2026

Top 25 Passive house architects worldwide

RevenueBase identified 1,588 company matches for passive house architects worldwide as of November 2026 and tracks 7,004 professional contacts across them, including 2,063 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for passive house architects worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for passive house architects follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,588Companies
7,004Contacts tracked
2,063Verified emails
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The 25 largest passive house architects worldwide

Ranked by team size
Top 25 of 1,588 company matches for passive house architects worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchZaragoza, SpainHQ recorded Nov 6, 202651-200103 contacts →

Exact match

“We are LOBE Group, a company spearheading the real estate sector that is at the forefront of energy efficiency thanks to Passivhaus certified construction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHelsinki, FinlandHQ recorded Nov 6, 202651-20097 contacts →

Exact match

“IdeaStructura suunnittelee pitkäikäisiä, laadukkaita ja energiatehokkaita rakennuksia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchTaastrup, DenmarkHQ recorded Nov 6, 2026201-50086 contacts →

Exact match

“Lind & Risør A/S er et full-service arkitekt- og byggefirma med speciale i husbyggeri, nybyg, familiehuse og rækkehuse.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchStrasbourg, FranceHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Solares Bauen est un bureau d’étude fluides, thermique et environnement dans le bâtiment créée en 2005 à Strasbourg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20066 contacts →

Exact match

“We are an award-winning architectural practice specialising in the design of low energy, low environmental impact buildings, cost effectively and to the highest quality standards.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSint-denijs-westrem, BelgiumHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“Missie Bostoen Group wil op een no nonsense manier haar maatschappelijke verantwoordelijkheid nemen voor een betere wereld voor onze kinderen en kleinkinderen, door het wonen CO²…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDoncaster, United KingdomHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“At 21 Degrees, we believe buildings should be designed for lower energy use, healthier spaces and better comfort.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPraha 6, Czech RepublicHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“We design and project the most modern energy-efficient buildings in 3D and BIM with minimal operating costs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBrussels, BelgiumHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“A2M is an international practice driven by an ardent belief in the possibilities of modern architecture and a keen curiosity about building physics, our interdisciplinary team…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“Founded in 1992, LDa has provided award-winning design solutions for a wide range of clients throughout New England, practicing in the residential, interior design, commercial…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMünster, GermanyHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Der Generalplaner für nachhaltiges Bauen & Sanieren Wir sind Ihr unabhängiger Partner für Energieberatung, Fördermittelmanagement und die energieeffiziente Planung und Umsetzung…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“We are a team of like-minded individuals delivering a commercially designed building services solution; we pride ourselves on the quality of our product.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchOxfordshire, United KingdomHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“etch Associates are an innovative and collaborative practice formed by David Behan, Richard Turner and David Harris, with 60 years combined experience within the construction…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBrussels, BelgiumHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“Bureau d'Etudes en Design Energétique du Bâtiment, MK Engineering s'est forgé une solide expérience en conception très basse énergie avec ses services de Conseil aux Architecte et…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBrooklyn, NY, United StatesHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“475’s mission is to lead a transformation of the North American construction industry toward making durable high-performance, Passive House and zero-energy buildings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCuritiba, BrazilHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Hygge is an architectural engineering consulting company founded in Curitiba, Brazil that aims to deliver healthy, sustainable and energy efficient buildings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“FBM Architects believe that fantastic architecture makes a positive difference to people’s lives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBristol, United KingdomHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“gcp is an employee-owned chartered architectural practice and energy consultancy based in Bristol.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“HAYCON is design | build company located in Boston.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Ecotope has provided sustainable building design consulting and engineering services in the Pacific Northwest for over 40 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHarrisburg, PA, United StatesHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Murray Associates Architects, P.C is the oldest Architecture and Interior Design firm in the Central Pennsylvania Region utilizing todays latest technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDagmersellen, SwitzerlandHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“ARCHITEKTUR IST UNSERE LEIDENSCHAFT Ein Lebensraum ist so individuell wie die Persönlichkeiten, die darin leben oder arbeiten.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Ackroyd Lowrie is a design-led, client focused practice.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Ingui Architecture, formerly Baxt Ingui Architects, is an award-winning firm that has been a leader in design and sustainability for over 45 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJodoigne, BelgiumHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Construction de maisons passives, ossature bois, basse consommation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,588 passive house architects worldwide

See the full list, filter by size, metro and specialty, and access 2,063 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Passive house architects worldwide at a glance

As of Nov 6, 2026
29.5%Verified-email coverage
4.4Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,249
11-50
250
51-200
36
201-500
4
1,001-5,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for passive house architects are linked below.
What qualifies
Company records worldwide whose business descriptions match “passive house architects” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,063 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Passive house architects by location

12 lists · largest first

Every Passive house architects list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “passive house architects”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many passive house architects are there worldwide?

RevenueBase identified 1,588 company matches for passive house architects worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Grupo Lobe tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most passive house architects?

The United Kingdom leads with 197 companies, followed by the United States (176) and Germany (166). Every passive house architects list by country and city is linked on this page.

Which city has the most passive house architects?

London leads with 31 company records, followed by Barcelona (16) and New York (16).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,063 professional contacts with verified work emails tracked across these 1,588 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.