Company lists · Data refreshed September 2026

Top 25 Architecture companies worldwide

RevenueBase identified 130,969 architecture companies worldwide as of September 2026 and tracks 1,315,283 professional contacts across them, including 512,517 with verified work emails and 257,674 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers architecture companies worldwide, 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 6, 2026. Country and city lists for architecture companies follow the table.

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 6, 2026 86% judged on-target in blind review
130,969Companies
1,315,283Contacts tracked
512,517Verified emails
257,674Mobile numbers
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The 25 largest architecture companies worldwide

Ranked by team size
Top 25 of 130,969 architecture companies worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to architecture companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 6, 202610001+33,846 contacts →

Indirect evidence

“Arcadis is a leading global partner, delivering transformative projects with businesses, cities and industries.”

Source: RevenueBase Database · checked Sep 6, 2026
2Indirect evidenceEdmonton, AB, CanadaHQ checked Sep 6, 202610001+28,416 contacts →

Indirect evidence

“Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.”

Source: RevenueBase Database · checked Sep 6, 2026
3Indirect evidenceLondon, United KingdomHQ checked Sep 6, 202610001+21,018 contacts →

Indirect evidence

“We guide, plan and design the future of the built environment.”

Source: RevenueBase Database · checked Sep 6, 2026
4Indirect evidenceStockholm, SwedenHQ checked Sep 6, 202610001+18,445 contacts →

Indirect evidence

“Sweco is at the heart of the green transition - planning and designing the sustainable communities and cities of the future.”

Source: RevenueBase Database · checked Sep 6, 2026
5Strong evidenceCopenhagen, DenmarkHQ checked Sep 6, 202610001+15,715 contacts →

Strong evidence

“Ramboll is a global architecture, engineering and consultancy company founded in Denmark in 1945.”

Source: RevenueBase Database · checked Sep 6, 2026
6Strong evidenceSaint-quentin-en-yvelines, FranceHQ checked Sep 6, 202610001+11,641 contacts →

Strong evidence

“Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.”

Source: RevenueBase Database · checked Sep 6, 2026
7Indirect evidenceRaleigh, NC, United StatesHQ checked Sep 6, 20265,001-10,00010,117 contacts →

Indirect evidence

“Kimley-Horn is one of the nation’s premier planning and design consulting firms.”

Source: RevenueBase Database · checked Sep 6, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 202610001+9,318 contacts →

Indirect evidence

“What if you could shape built and natural environments – and the future of those that use them?”

Source: RevenueBase Database · checked Sep 6, 2026
9Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 20265,001-10,0007,900 contacts →

Strong evidence

“Gensler is a global architecture, design, and planning firm with 57 locations across the Americas, Europe, Greater China, Asia Pacific, and the Middle East.”

Source: RevenueBase Database · checked Sep 6, 2026
10Indirect evidenceLyngby, DenmarkHQ checked Sep 6, 20265,001-10,0007,438 contacts →

Indirect evidence

“Together with customers, partners and colleagues, we shape a future where people and societies grow and flourish.”

Source: RevenueBase Database · checked Sep 6, 2026
11Strong evidenceBilbao, SpainHQ checked Sep 6, 20265,001-10,0004,988 contacts →

Strong evidence

“IDOM is a leading multinational company providing professional services in consulting, engineering and architecture.”

Source: RevenueBase Database · checked Sep 6, 2026
12Indirect evidenceGreeley, CO, United StatesHQ checked Sep 6, 20265,001-10,0004,094 contacts →

Indirect evidence

“As an employee-owned company, Hensel Phelps culture is based on dedication and commitment to delivering EXCELLENCE for our clients and employees.”

Source: RevenueBase Database · checked Sep 6, 2026
13Indirect evidenceProvidence, RI, United StatesHQ checked Sep 6, 20261,001-5,0004,084 contacts →

Indirect evidence

“Gilbane Building Company provides a full slate of construction and facilities-related services-from preconstruction services planning and integrated consulting capabilities to…”

Source: RevenueBase Database · checked Sep 6, 2026
14Strong evidenceBrampton, ON, CanadaHQ checked Sep 6, 20261,001-5,0003,949 contacts →

Strong evidence

“With a mission to understand, innovate, partner and deliver, EXP provides engineering, architecture, design and consulting services to the world’s built and natural environments.”

Source: RevenueBase Database · checked Sep 6, 2026
15Indirect evidenceBath, United KingdomHQ checked Sep 6, 20261,001-5,0003,336 contacts →

Indirect evidence

“We are an international, integrated consultancy of engineers, designers and advisers.”

Source: RevenueBase Database · checked Sep 6, 2026
16Indirect evidenceParis, FranceHQ checked Sep 6, 2026n/a3,314 contacts →

Indirect evidence

“Nicolas Simon and Max Turnheim are two architects who graduated from ÉNSAPB and ÉSA, respectively.”

Source: RevenueBase Database · checked Sep 6, 2026
17Indirect evidenceSydney, United KingdomHQ checked Sep 6, 20261,001-5,0003,299 contacts →

Indirect evidence

“RLB.”

Source: RevenueBase Database · checked Sep 6, 2026
18Indirect evidenceChicago, IL, United StatesHQ checked Sep 6, 20261,001-5,0002,958 contacts →

Indirect evidence

“Since 1935, we’ve believed that design has the power to make the world a better, more beautiful place.”

Source: RevenueBase Database · checked Sep 6, 2026
19Strong evidenceLondon, United KingdomHQ checked Sep 6, 20261,001-5,0002,869 contacts →

Strong evidence

“Foster + Partners is a global studio for architecture, urbanism and design, all rooted in sustainability and founded by Norman Foster in 1967.”

Source: RevenueBase Database · checked Sep 6, 2026
20Indirect evidenceBirmingham, AL, United StatesHQ checked Sep 6, 20265,001-10,0002,818 contacts →

Indirect evidence

“BL Harbert International, LLC began construction operations in under the leadership of Billy Harbert, Jr, carrying on a family tradition in the construction industry dating back…”

Source: RevenueBase Database · checked Sep 6, 2026
21Indirect evidenceFairfax, VA, United StatesHQ checked Sep 6, 20261,001-5,0002,795 contacts →

Indirect evidence

“Dewberry is a leading, market-facing firm with a proven history of providing professional services to a wide variety of public- and private-sector clients.”

Source: RevenueBase Database · checked Sep 6, 2026
22Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 20261,001-5,0002,614 contacts →

Indirect evidence

“HOK is a global interdisciplinary design firm.”

Source: RevenueBase Database · checked Sep 6, 2026
23Strong evidenceOslo, NorwayHQ checked Sep 6, 20261,001-5,0002,553 contacts →

Strong evidence

“Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.”

Source: RevenueBase Database · checked Sep 6, 2026
24Indirect evidenceDallas, TX, United StatesHQ checked Sep 6, 20261,001-5,0002,462 contacts →

Indirect evidence

“We are a global firm of architects, designers, planners and advisors who create places noted for their beauty and performance.”

Source: RevenueBase Database · checked Sep 6, 2026
25Strong evidenceJacksonville, FL, United StatesHQ checked Sep 6, 20261,001-5,0002,213 contacts →

Strong evidence

“Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…”

Source: RevenueBase Database · checked Sep 6, 2026

Showing 25 of 130,969 architecture companies worldwide

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Architecture companies worldwide at a glance

As of Sep 6, 2026
39.0%Verified-email coverage
19.6%Mobile-number coverage
10.0Average contacts per company
1-10Median size (employees)
3.0%Largest-city concentration · London
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
92,238
11-50
30,735
51-200
5,601
201-500
869
501-1,000
223
1,001-5,000
153
5,001-10,000
17
10001+
51

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 architecture companies, 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.
Coverage
45 countries, largest first: the United States, the United Kingdom, Brazil, France, Germany, Spain, Italy, Australia, Canada, the Netherlands and 35 more. Country and city lists for architecture companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “architecture companies”. 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 architecture companies), 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 architecture companies, and records with no verified work email.
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, 512,517 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 6, 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.

Architecture companies by location

519 lists · largest first

Every Architecture companies 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 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 architecture companies, 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 architecture companies are there worldwide?

RevenueBase identified 130,969 architecture companies worldwide 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?

Arcadis, headquartered in Amsterdam, tops this list with the largest team on record.

Which country has the most architecture companies?

The United States leads with 33,363 companies, followed by the United Kingdom (11,373) and Brazil (10,807). Every architecture companies list by country and city is linked on this page.

Which city has the most architecture companies?

London leads with 3914 headquartered companies, followed by Sao Paulo (2600) and Paris (2177).

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 512,517 verified decision-maker contacts tracked across these 130,969 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 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 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.