Company lists · Data refreshed September 2026

Top 25 Modular building design firms based in the United States

Name: Modular building design firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,072 companies tracked

RevenueBase identified 1,072 modular building design firms headquartered in the United States as of September 2026 and tracks 18,464 professional contacts across them, including 6,262 with verified work emails. New York is the largest hub.

This list covers modular building design firms headquartered in the United States, 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

1,072Companies

18,464Contacts tracked

6,262Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest modular building design firms based in the United States

Ranked by team size

Top 25 of 1,072 modular building design firms based in the United States, 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	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
3	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
4	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
5	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
6	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
7	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
8	RESIA	Indirect evidence	Miami, FL, United StatesHQ checked Sep 17, 2026	201-500	250 contacts →
	Indirect evidence “Resia is a leading housing platform revolutionizing multi-family housing.” Source: RevenueBase Database · checked Sep 17, 2026
9	Volumetric Building Companies	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	501-1,000	189 contacts →
	Strong evidence “Volumetric Building Companies (VBC) is a vertically integrated global volumetric modular construction technology leader headquartered in Philadelphia, PA with locations across the…” Source: RevenueBase Database · checked Sep 17, 2026
10	Pacific Mobile Structures, INC	Partial evidence	Chehalis, WA, United StatesHQ checked Sep 17, 2026	201-500	158 contacts →
	Partial evidence “Pacific Mobile Structures sells and leases exceptional mobile office space and builds innovative modular structures with a relentless, customer-first commitment.” Source: RevenueBase Database · checked Sep 17, 2026
11	Hunter Buildings	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	147 contacts →
	Partial evidence “Headquartered in Houston, and with offices in the UK, the Netherlands, the UAE, India and active across the globe, Hunter is a global leader in engineered modular and technical…” Source: RevenueBase Database · checked Sep 17, 2026
12	Arning Companies, INC	Indirect evidence	Cassville, MO, United StatesHQ checked Sep 17, 2026	201-500	114 contacts →
	Indirect evidence “Founded in 1983, Arning Companies has redefined industrialized construction as a trusted national leader.” Source: RevenueBase Database · checked Sep 17, 2026
13	Aries Buildings	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	105 contacts →
	Partial evidence “A nationwide modular construction partner specializing in temporary and permanent space solutions.” Source: RevenueBase Database · checked Sep 17, 2026
14	Conxtech	Indirect evidence	Pleasanton, CA, United StatesHQ checked Sep 17, 2026	51-200	105 contacts →
	Indirect evidence “ConXtech, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
15	Champion Enterprises	Partial evidence	Troy, MI, United StatesHQ checked Sep 17, 2026	5,001-10,000	103 contacts →
	Partial evidence “Throughout our long history, Champion has been acknowledged as a leader in the manufactured housing industry and one of the largest modular homebuilders in North America.” Source: RevenueBase Database · checked Sep 17, 2026
16	Factory OS	Indirect evidence	Vallejo, CA, United StatesHQ checked Sep 17, 2026	51-200	103 contacts →
	Indirect evidence “Factory_OS is revolutionizing home construction.” Source: RevenueBase Database · checked Sep 17, 2026
17	ROOM	Indirect evidence	New York, NY, United StatesHQ checked Sep 17, 2026	11-50	98 contacts →
	Indirect evidence “At ROOM, we are reimagining the modern workplace.” Source: RevenueBase Database · checked Sep 17, 2026
18	Khs&s	Indirect evidence	Anaheim, CA, United StatesHQ checked Sep 17, 2026	501-1,000	95 contacts →
	Indirect evidence “A leader in lean Interior, Exterior and Themed Construction since 1996.” Source: RevenueBase Database · checked Sep 17, 2026
19	Silver Creek Modular	Partial evidence	Perris, CA, United StatesHQ checked Sep 17, 2026	201-500	95 contacts →
	Partial evidence “Silver Creek Modular: Purpose-Build, People Powered.” Source: RevenueBase Database · checked Sep 17, 2026
20	Prescient CO	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	201-500	85 contacts →
	Partial evidence “Prescient’s digital design-build system is an efficient, collaborative, turnkey approach used to design and build multi-unit housing and hotel structures.” Source: RevenueBase Database · checked Sep 17, 2026
21	Module X Solutions LLC	Strong evidence	Shreveport, LA, United StatesHQ checked Sep 17, 2026	51-200	85 contacts →
	Strong evidence “Module X Solutions (MXS) is one the most diversified and scalable providers of protective building systems in the industry.” Source: RevenueBase Database · checked Sep 17, 2026
22	Bensonwood	Strong evidence	Walpole, NH, United StatesHQ checked Sep 17, 2026	51-200	76 contacts →
	Strong evidence “Bensonwood is a design/build firm producing sustainable, energy-efficient residential and commercial buildings with a strong emphasis on offsite fabrication and minimization of…” Source: RevenueBase Database · checked Sep 17, 2026
23	ID A	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 17, 2026	11-50	76 contacts →
	Indirect evidence “ID+A, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
24	Commodore Homes	Partial evidence	Elkhart, IN, United StatesHQ checked Sep 17, 2026	501-1,000	75 contacts →
	Partial evidence “Commodore Homes is one of the largest builders of modular and manufactured homes throughout the northeast, mid-Atlantic, and Midwest markets.” Source: RevenueBase Database · checked Sep 17, 2026
25	Whitley Manufacturing	Strong evidence	South Whitley, IN, United StatesHQ checked Sep 17, 2026	51-200	72 contacts →
	Strong evidence “Whitley Manufacturing is one of the nation's leading manufacturers of custom commercial modular buildings serving an international clientele from Indiana and Washington.” 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 1,072 modular building design firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 6,262 reachable decision-makers.

Free signup · no credit card

View the full list →

Modular building design firms based in the United States at a glance

As of Sep 17, 2026

33.9%Verified-email coverage

17.2Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

547

11-50

319

51-200

154

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,072 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 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.
What qualifies: Companies headquartered in the United States 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. Companies headquartered outside United States 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, 6,262 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 metro

Modular building design firms in New York25

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 based in the United States?

RevenueBase identified 1,072 modular building design firms headquartered in the United States 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 city has the most modular building design firms?

New York leads with 25 headquartered companies, followed by Houston (20) and Los Angeles (18).

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 6,262 verified decision-maker contacts tracked across these 1,072 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.

Ready to reach these companies? Verified emails and direct dials for all 1,072 modular building design firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Modular building design firms by geography

Browse the directory

Browse: Companies home · All United States lists · All Modular building design firms lists · New lists

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.