Company lists · Data refreshed September 2026

Top 23 Modular classroom manufacturers based in the United States

Name: Modular classroom manufacturers 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 335 companies tracked

RevenueBase identified 335 modular classroom manufacturers headquartered in the United States as of September 2026 and tracks 6,566 professional contacts across them, including 2,164 with verified work emails. Houston is the largest hub.

This list covers modular classroom manufacturers 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

335Companies

6,566Contacts tracked

2,164Verified emails

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The 23 largest modular classroom manufacturers based in the United States

Ranked by team size

Top 23 of 335 modular classroom manufacturers 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 classroom manufacturers: 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	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
2	Modspace	Partial evidence	Berwyn, PA, United StatesHQ checked Sep 17, 2026	501-1,000	293 contacts →
	Partial 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
3	Volumetric Building Companies	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	501-1,000	189 contacts →
	Partial 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
4	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
5	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
6	Champion Enterprises	Strong evidence	Troy, MI, United StatesHQ checked Sep 17, 2026	5,001-10,000	103 contacts →
	Strong 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
7	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
8	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
9	Ramtech Building Systems, INC	Partial evidence	Mansfield, TX, United StatesHQ checked Sep 17, 2026	51-200	70 contacts →
	Partial evidence “As a modular construction specialist for over 40 years, Ramtech has provided modular building solutions for educational institutions, healthcare providers, Fortune 500 companies…” Source: RevenueBase Database · checked Sep 17, 2026
10	Boxx Modular United States	Partial evidence	Fort Worth, TX, United StatesHQ checked Sep 17, 2026	201-500	59 contacts →
	Partial evidence “BOXX Modular US rents, leases, and sells temporary and permanent modular buildings, including standard buildings ready for immediate delivery and custom-designed solutions.” Source: RevenueBase Database · checked Sep 17, 2026
11	Homeway Commercial	Strong evidence	Deer Creek, IL, United StatesHQ checked Sep 17, 2026	51-200	55 contacts →
	Strong evidence “Homeway Commercial is an Illinois based volumetric modular manufacturer of large-scale commercial projects such as hotels, multi-family apartments, housing developments, senior…” Source: RevenueBase Database · checked Sep 17, 2026
12	Madison Industries, INC	Indirect evidence	Cerritos, CA, United StatesHQ checked Sep 17, 2026	51-200	53 contacts →
	Indirect evidence “At Madison Industries, we understand our customers’ needs and expectations are constantly evolving.” Source: RevenueBase Database · checked Sep 17, 2026
13	Porta-King Building Systems	Partial evidence	Earth City, MO, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial evidence “Porta-King is the largest manufacturer of pre-engineered buildings used in the Industrial, Commercial, Security and Petroleum markets.” Source: RevenueBase Database · checked Sep 17, 2026
14	Modlogiq, INC	Partial evidence	New Holland, PA, United StatesHQ checked Sep 17, 2026	51-200	50 contacts →
	Partial evidence “MODLOGIQ is leading a new wave of innovation in Off-Site, Modular Construction.” Source: RevenueBase Database · checked Sep 17, 2026
15	Allied Modular Building Systems	Partial evidence	Orange, CA, United StatesHQ checked Sep 17, 2026	51-200	50 contacts →
	Partial evidence “Allied Modular has been an industry leader for over 35 years in high quality modular construction.” Source: RevenueBase Database · checked Sep 17, 2026
16	American Modular Systems	Partial evidence	Manteca, CA, United StatesHQ checked Sep 17, 2026	201-500	49 contacts →
	Partial evidence “At American Modular Systems (AMS), we’re redefining what’s possible in modular design.” Source: RevenueBase Database · checked Sep 17, 2026
17	Palomar Modular Buildings	Strong evidence	Desoto, TX, United StatesHQ checked Sep 17, 2026	51-200	46 contacts →
	Strong evidence “Palomar Modular Buildings designs and manufactures advanced modular buildings for a range of industries both public and private.” Source: RevenueBase Database · checked Sep 17, 2026
18	Wilmot Modular Structures, INC	Partial evidence	White Marsh, MD, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Partial evidence “Since 1989, Wilmot Modular Structures has proudly maintained its position as an industry leader in the distribution, sales, and leasing of portable, prefabricated, and mobile…” Source: RevenueBase Database · checked Sep 17, 2026
19	Sunbelt Modular INC	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 17, 2026	1,001-5,000	45 contacts →
	Partial evidence “At Sunbelt, we specialize in the design, engineering, and manufacturing of custom modular buildings for a wide range of industries.” Source: RevenueBase Database · checked Sep 17, 2026
20	Affinity Modular	Partial evidence	Lakeland, GA, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Partial evidence “Affinity Modular, the Southeast's leading high-performance modular home solution, partners with authorized builders to deliver custom modular homes designed for elevated living.” Source: RevenueBase Database · checked Sep 17, 2026
21	Diamond Builders INC	Strong evidence	Douglas, GA, United StatesHQ checked Sep 17, 2026	201-500	44 contacts →
	Strong evidence “For over 20 years, DBI has been a leading manufacturer of relocatable modular buildings.” Source: RevenueBase Database · checked Sep 17, 2026
22	Icon Legacy Custom Modular Homes, LLC	Partial evidence	Selinsgrove, PA, United StatesHQ checked Sep 17, 2026	51-200	43 contacts →
	Partial evidence “Icon Legacy Custom Modular Homes is transforming the status quo of the modular home building industry.” Source: RevenueBase Database · checked Sep 17, 2026
23	Professional Building Systems	Partial evidence	Middleburg, PA, United StatesHQ checked Sep 17, 2026	51-200	43 contacts →
	Partial evidence “Professional Building Systems prides itself in the quality of our custom modular homes and our affordable prices.” 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 classroom manufacturers. 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 classroom manufacturers.
Partial evidence: Its own public description names part of modular classroom manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name modular classroom manufacturers. 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 23 of 335 modular classroom manufacturers based in the United States

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Modular classroom manufacturers based in the United States at a glance

As of Sep 17, 2026

33.0%Verified-email coverage

19.6Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

126

11-50

105

51-200

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 335 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 classroom manufacturers, 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 classroom manufacturers”. 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 classroom manufacturers), 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 classroom manufacturers, 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, 2,164 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.

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 classroom manufacturers, 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 classroom manufacturers are there based in the United States?

RevenueBase identified 335 modular classroom manufacturers 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?

Mobile Modular Management Corporation, headquartered in Livermore, tops this list with the largest team on record.

Which city has the most modular classroom manufacturers?

Houston leads with 7 headquartered companies, followed by Phoenix (6) and Los Angeles (5).

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 2,164 verified decision-maker contacts tracked across these 335 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.