Company lists · Data refreshed September 2026

Top 25 Portable building manufacturers based in the United States

Name: Portable building 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 30, 2026 614 companies tracked

RevenueBase identified 614 portable building manufacturers headquartered in the United States as of September 2026 and tracks 16,283 professional contacts across them, including 4,280 with verified work emails. Houston is the largest hub.

This list covers portable building 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 30, 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 30, 2026 86% judged on-target in blind review

614Companies

16,283Contacts tracked

4,280Verified emails

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The 25 largest portable building manufacturers based in the United States

Ranked by team size

Top 25 of 614 portable building manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to portable building 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 Mini Solutions	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,355 contacts →
	Indirect evidence “Mobile Mini is now WillScot.” Source: RevenueBase Database · checked Sep 30, 2026
2	Tuff Shed, INC	Partial evidence	Denver, CO, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,118 contacts →
	Partial evidence “Tuff Shed is America's leading provider of installed storage buildings, garages and cabin shells.” Source: RevenueBase Database · checked Sep 30, 2026
3	Nucor Building Systems	Strong evidence	Waterloo, IN, United StatesHQ checked Sep 30, 2026	1,001-5,000	669 contacts →
	Strong evidence “Nucor Building Systems, a division of Nucor Corporation, has been a leader in the design and manufacture of custom-engineered metal building systems for more than two and a half…” Source: RevenueBase Database · checked Sep 30, 2026
4	Clark Pacific	Strong evidence	West Sacramento, CA, United StatesHQ checked Sep 30, 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 30, 2026
5	Fleetwood Homes, A Cavco Company	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 30, 2026	1,001-5,000	387 contacts →
	Indirect evidence “Over 70 Years of Satisfying Homeowners In 1950, Fleetwood was founded on an uncompromising dedication to its craftsmanship and service.” Source: RevenueBase Database · checked Sep 30, 2026
6	Whirlwind Steel Buildings And Components	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	330 contacts →
	Strong evidence “Whirlwind Steel is a manufacturer of pre-engineered metal buildings and metal building components for the agricultural, commercial, governmental, industrial, institutional…” Source: RevenueBase Database · checked Sep 30, 2026
7	Mobile Modular Management Corporation	Indirect evidence	Livermore, CA, United StatesHQ checked Sep 30, 2026	501-1,000	305 contacts →
	Indirect 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 30, 2026
8	Modspace	Partial evidence	Berwyn, PA, United StatesHQ checked Sep 30, 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 30, 2026
9	OAK Creek Homes	Partial evidence	League City, TX, United StatesHQ checked Sep 30, 2026	501-1,000	275 contacts →
	Partial evidence “Whether you are picking a modular home, manufactured home, mobile home, or trailer home; you will get the most value for your dollar when you choose Oak Creek Homes.” Source: RevenueBase Database · checked Sep 30, 2026
10	Leonard Truck Outfitters	Strong evidence	Mount Airy, NC, United StatesHQ checked Sep 30, 2026	1,001-5,000	210 contacts →
	Strong evidence “Established in the Blue Ridge foothills of North Carolina in 1963, Leonard Buildings and Truck Accessories is a manufacturer and distributor whose product lines include storage…” Source: RevenueBase Database · checked Sep 30, 2026
11	Volumetric Building Companies	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 30, 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 30, 2026
12	OLD Hickory Buildings	Strong evidence	Murfreesboro, TN, United StatesHQ checked Sep 30, 2026	51-200	162 contacts →
	Strong evidence “Old Hickory Buildings and Sheds: Quality Backyard Storage Barns, Sheds, Portable Buildings, Mini Barns, Metal Sheds, Garages, Playhouses, Cabins and more.” Source: RevenueBase Database · checked Sep 30, 2026
13	Pac-Van, INC	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 30, 2026	201-500	160 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
14	Pacific Mobile Structures, INC	Indirect evidence	Chehalis, WA, United StatesHQ checked Sep 30, 2026	201-500	158 contacts →
	Indirect 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 30, 2026
15	Hunter Buildings	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	147 contacts →
	Indirect 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 30, 2026
16	Premier Portable Buildings	Strong evidence	South Fulton, TN, United StatesHQ checked Sep 30, 2026	201-500	106 contacts →
	Strong evidence “Premier Portable Products is a family owned business that sells a variety of treated, urethane, and metal portable buildings in 34 states and four Canadian provinces.” Source: RevenueBase Database · checked Sep 30, 2026
17	Mobile Modular Portable Storage	Partial evidence	Livermore, CA, United StatesHQ checked Sep 30, 2026	51-200	105 contacts →
	Partial evidence “At Mobile Modular Portable Storage, a division of McGrath RentCorp, we understand it’s important to find the right job and the right career.” Source: RevenueBase Database · checked Sep 30, 2026
18	Aries Buildings	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	105 contacts →
	Indirect evidence “A nationwide modular construction partner specializing in temporary and permanent space solutions.” Source: RevenueBase Database · checked Sep 30, 2026
19	Champion Enterprises	Partial evidence	Troy, MI, United StatesHQ checked Sep 30, 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 30, 2026
20	Corle Building Systems	Partial evidence	Imler, PA, United StatesHQ checked Sep 30, 2026	201-500	103 contacts →
	Partial evidence “Corle Building Systems is committed to providing you with quality, custom-engineered metal buildings that meet your exact design specifications, construct easily, perform…” Source: RevenueBase Database · checked Sep 30, 2026
21	Silver Creek Modular	Indirect evidence	Perris, CA, United StatesHQ checked Sep 30, 2026	201-500	95 contacts →
	Indirect evidence “Silver Creek Modular: Purpose-Build, People Powered.” Source: RevenueBase Database · checked Sep 30, 2026
22	Alaska Structures	Strong evidence	Las Cruces, NM, United StatesHQ checked Sep 30, 2026	201-500	78 contacts →
	Strong evidence “Alaska Structures® designs and manufactures engineered fabric buildings, industrial facilities, and workforce accommodations for some of the world's most challenging environments.” Source: RevenueBase Database · checked Sep 30, 2026
23	Cook Portable Warehouses	Strong evidence	Cobden, IL, United StatesHQ checked Sep 30, 2026	201-500	75 contacts →
	Strong evidence “In 1984, the Cook family began constructing portable buildings on a parking lot next to their office with the goal of getting rid of some excess lumber.” Source: RevenueBase Database · checked Sep 30, 2026
24	Whitley Manufacturing	Strong evidence	South Whitley, IN, United StatesHQ checked Sep 30, 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 30, 2026
25	Ramtech Building Systems, INC	Partial evidence	Mansfield, TX, United StatesHQ checked Sep 30, 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 30, 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: portable building 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 portable building manufacturers.
Partial evidence: Its own public description names part of portable building manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name portable building 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 25 of 614 portable building manufacturers based in the United States

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Portable building manufacturers based in the United States at a glance

As of Sep 30, 2026

26.3%Verified-email coverage

26.5Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

260

11-50

182

51-200

118

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 614 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 portable building 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 “portable building 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 portable building 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 portable building 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, 4,280 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 30, 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 portable building 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 portable building manufacturers are there based in the United States?

RevenueBase identified 614 portable building 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 Mini Solutions, headquartered in Phoenix, tops this list with the largest team on record.

Which city has the most portable building manufacturers?

Houston leads with 15 headquartered companies, followed by Phoenix (10) and Austin (6).

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 4,280 verified decision-maker contacts tracked across these 614 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 30, 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.