Company lists · Data refreshed September 2026

Top 25 Modular building design firms worldwide

Name: Modular building design firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 4,982 companies tracked

RevenueBase identified 4,982 modular building design firms worldwide as of September 2026 and tracks 64,350 professional contacts across them, including 19,356 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers modular building design firms 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 17, 2026. Country and city lists for modular building design firms 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 17, 2026 86% judged on-target in blind review

4,982Companies

64,350Contacts tracked

19,356Verified emails

0Mobile numbers

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The 25 largest modular building design firms worldwide

Ranked by team size

Top 25 of 4,982 modular building design firms worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to modular 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	Clayton	Indirect evidence	Maryville, TN, United StatesHQ checked Sep 17, 2026	10001+	4,222 contacts →
	Indirect evidence “Founded in 1956, Clayton is a leading single-family, values-driven home builder committed to opening doors to a better life through homeownership.” Source: RevenueBase Database · checked Sep 17, 2026
2	Group Amana	Strong evidence	Dubai Investment Park 1, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	1,791 contacts →
	Strong evidence “Group AMANA is the regional leader in the design-build of industrial and commercial facilities, with over 1,500 buildings constructed across the region in three decades of…” Source: RevenueBase Database · checked Sep 17, 2026
3	Portakabin	Partial evidence	York, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,206 contacts →
	Partial evidence “An industry leading modular and offsite construction specialist operating across ten European countries; England, Wales, Scotland, Northern Ireland, Republic of Ireland, France…” Source: RevenueBase Database · checked Sep 17, 2026
4	Promet	Partial evidence	Santiago, ChileHQ checked Sep 17, 2026	1,001-5,000	1,139 contacts →
	Partial evidence “Fabricación modular de edificios dormitorios, oficinas, salas de recreacion, comedores y cocinas industriales, edificios auxiliares, para venta o arriendo.” Source: RevenueBase Database · checked Sep 17, 2026
5	Atco Structures	Strong evidence	Calgary, AZ, CanadaHQ checked Sep 17, 2026	10001+	1,040 contacts →
	Strong evidence “Operating around the globe, ATCO Structures is an industry leader in the design, manufacture, and installation of turnkey modular buildings for permanent or temporary use.” Source: RevenueBase Database · checked Sep 17, 2026
6	Algeco UK	Strong evidence	Stockton-on-tees, United KingdomHQ checked Sep 17, 2026	1,001-5,000	712 contacts →
	Strong evidence “Algeco is the leading modular accommodation brand in Europe, offering a wealth of expertise in designing and delivering temporary and permanent accommodation solutions for a range…” Source: RevenueBase Database · checked Sep 17, 2026
7	Clark Pacific	Strong evidence	West Sacramento, CA, United StatesHQ checked Sep 17, 2026	501-1,000	614 contacts →
	Strong evidence “Clark Pacific designs, manufactures and builds prefabricated building systems; bridging the gap between construction and manufacturing.” Source: RevenueBase Database · checked Sep 17, 2026
8	Tecno Fast	Partial evidence	Santiago, ChileHQ checked Sep 17, 2026	501-1,000	589 contacts →
	Partial evidence “En Tecno Fast estamos orientados a entregar construcciones modulares a proyectos arquitectónicos, ingenieriles y de construcción, con más de m2 construidos en Sudamérica.” Source: RevenueBase Database · checked Sep 17, 2026
9	Pekabex	Partial evidence	Poznań, PolandHQ checked Sep 17, 2026	1,001-5,000	565 contacts →
	Partial evidence “WE DESIGN, MANUFACTURE, BUILD Pekabex is the leader of prefabricated industry in Poland.” Source: RevenueBase Database · checked Sep 17, 2026
10	Opus Construtech	Partial evidence	Betim, BrazilHQ checked Sep 17, 2026	1,001-5,000	519 contacts →
	Partial evidence “Somos a maior indústria de construções modulares do Brasil.” Source: RevenueBase Database · checked Sep 17, 2026
11	Algeco France	Partial evidence	Charnay-les-macon, FranceHQ checked Sep 17, 2026	501-1,000	467 contacts →
	Partial evidence “Algeco est le leader Européen et Asie-Pacifique de la construction modulaire.” Source: RevenueBase Database · checked Sep 17, 2026
12	Specialist Services	Strong evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	501-1,000	435 contacts →
	Strong evidence “Specialist Services, a Centurion Company, is a global supplier of modular buildings and packaging solutions for people and equipment in the energy and utility industries.” Source: RevenueBase Database · checked Sep 17, 2026
13	Brasil AO Cubo	Indirect evidence	Tubarão, BrazilHQ checked Sep 17, 2026	501-1,000	432 contacts →
	Indirect evidence “A Brasil ao Cubo é uma construtora catarinense que atende todo o Brasil, com um sólido compromisso com a agilidade e a excelência em suas obras.” Source: RevenueBase Database · checked Sep 17, 2026
14	Ausco Modular	Partial evidence	Redbank, United StatesHQ checked Sep 17, 2026	201-500	405 contacts →
	Partial evidence “At Ausco Modular, we provide modern, modular space solutions to companies, governments and communities so that they can thrive.” Source: RevenueBase Database · checked Sep 17, 2026
15	Integra	Partial evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	501-1,000	373 contacts →
	Partial evidence “Integra is an industry-leading team designing & delivering innovative turnkey data centers.” Source: RevenueBase Database · checked Sep 17, 2026
16	Butler Manufacturing	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	354 contacts →
	Partial evidence “Butler Manufacturing, a BlueScope Buildings North America brand, is known for our commitment to quality, providing nonresidential construction clients with a comprehensive…” Source: RevenueBase Database · checked Sep 17, 2026
17	Fleetwood	Strong evidence	Sydney, AustraliaHQ checked Sep 17, 2026	501-1,000	352 contacts →
	Strong evidence “Fleetwood Australia is a market leader in the design, manufacture, supply, and installation of modular buildings, with manufacturing operations in Victoria, New South Wales…” Source: RevenueBase Database · checked Sep 17, 2026
18	Clestra	Indirect evidence	Strasbourg, FranceHQ checked Sep 17, 2026	501-1,000	342 contacts →
	Indirect evidence “As a global construction partner, Clestra delivers highly-performant, future-proof spaces for its clients around the world.” Source: RevenueBase Database · checked Sep 17, 2026
19	ELA Container	Indirect evidence	Haren, GermanyHQ checked Sep 17, 2026	1,001-5,000	334 contacts →
	Indirect evidence “We are the world's leading specialist in mobile space solutions in container construction and continue to grow.” Source: RevenueBase Database · checked Sep 17, 2026
20	Modulaire Group	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	330 contacts →
	Partial evidence “Modulaire is a leader in European modular services and infrastructure.” Source: RevenueBase Database · checked Sep 17, 2026
21	Mobile Modular Management Corporation	Partial evidence	Livermore, CA, United StatesHQ checked Sep 17, 2026	501-1,000	305 contacts →
	Partial evidence “At Mobile Modular, a division of McGrath RentCorp, we recognize the importance of finding not just a job, but a meaningful career.” Source: RevenueBase Database · checked Sep 17, 2026
22	Sobha Modular	Partial evidence	Al Hamra, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	299 contacts →
	Partial evidence “Sobha Modular, the prestigious off-site manufacturing division of Sobha Realty, is revolutionizing the construction industry with avant-garde modularization techniques.” Source: RevenueBase Database · checked Sep 17, 2026
23	Modspace	Strong evidence	Berwyn, PA, United StatesHQ checked Sep 17, 2026	501-1,000	293 contacts →
	Strong evidence “Building on 50 years of experience in the modular construction industry, ModSpace is the American-owned market leader in time-tested product quality; new, innovative modular…” Source: RevenueBase Database · checked Sep 17, 2026
24	Leonardi Construção Industrializada Ltda	Indirect evidence	Atibaia, BrazilHQ checked Sep 17, 2026	501-1,000	289 contacts →
	Indirect evidence “LEONARDI: MAIS QUE PRÉ-FABRICADOS Sejam Bem vindos!” Source: RevenueBase Database · checked Sep 17, 2026
25	Base4	Strong evidence	Boca Raton, FL, United StatesHQ checked Sep 17, 2026	201-500	280 contacts →
	Strong evidence “BASE4 is a team of award-winning architects, engineers, and interior designers who live at the intersection of technological innovation and premier building design.” 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: modular 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 modular building design firms.
Partial evidence: Its own public description names part of modular 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 modular 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 4,982 modular building design firms worldwide

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Modular building design firms worldwide at a glance

As of Sep 17, 2026

30.1%Verified-email coverage

12.9Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

2,151

11-50

1,730

51-200

774

201-500

182

501-1,000

1,001-5,000

5,001-10,000

10001+

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 modular 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.
Coverage: 31 countries, largest first: the United States, India, the United Kingdom, Canada, Germany, France, Australia, Brazil, the Netherlands, Spain and 21 more. Country and city lists for modular building design firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “modular 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 modular 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 modular building design firms, 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, 19,356 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.

Modular building design firms by location

31 lists · largest first

Every Modular building design firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 modular 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 modular building design firms are there worldwide?

RevenueBase identified 4,982 modular building design firms 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?

Clayton, headquartered in Maryville, tops this list with the largest team on record.

Which country has the most modular building design firms?

The United States leads with 1,072 companies, followed by India (390) and the United Kingdom (361). Every modular building design firms list by country and city is linked on this page.

Which city has the most modular building design firms?

London leads with 48 headquartered companies, followed by Bangalore (42) and Madrid (36).

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 19,356 verified decision-maker contacts tracked across these 4,982 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.