Company lists · Data refreshed September 2026

Top 25 Modular green building companies based in the United States

Name: Modular green building companies 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 948 companies tracked

RevenueBase identified 948 modular green building companies headquartered in the United States as of September 2026 and tracks 14,824 professional contacts across them, including 4,890 with verified work emails. New York is the largest hub.

This list covers modular green building companies 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

948Companies

14,824Contacts tracked

4,890Verified emails

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The 25 largest modular green building companies based in the United States

Ranked by team size

Top 25 of 948 modular green building companies 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 green building 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.
#	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	Walsh Construction CO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	201-500	604 contacts →
	Indirect evidence “Made in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 17, 2026
3	Integra	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	501-1,000	373 contacts →
	Indirect evidence “Integra is an industry-leading team designing & delivering innovative turnkey data centers.” Source: RevenueBase Database · checked Sep 17, 2026
4	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
5	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
6	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
7	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
8	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
9	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
10	Smartlam	Indirect evidence	Dothan, AL, United StatesHQ checked Sep 17, 2026	201-500	81 contacts →
	Indirect evidence “As a complete mass timber construction partner, SmartLam simplifies complex builds by supporting the entire project lifecycle.” Source: RevenueBase Database · checked Sep 17, 2026
11	Bensonwood	Partial evidence	Walpole, NH, United StatesHQ checked Sep 17, 2026	51-200	76 contacts →
	Partial 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
12	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
13	Ramtech Building Systems, INC	Strong evidence	Mansfield, TX, United StatesHQ checked Sep 17, 2026	51-200	70 contacts →
	Strong 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
14	Rise Modular	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	51-200	66 contacts →
	Partial evidence “Rise Modular is a Minneapolis, MN based startup volumetric modular manufacturer and design build firm focused on the multi-family and hospitality markets in the Midwest.” Source: RevenueBase Database · checked Sep 17, 2026
15	ARO Homes	Partial evidence	Bay, CA, United StatesHQ checked Sep 17, 2026	51-200	63 contacts →
	Partial evidence “Aro Homes is a new company on a mission to redefine residential construction by building better, more sustainable homes faster and more efficiently.” Source: RevenueBase Database · checked Sep 17, 2026
16	Boxx Modular United States	Strong evidence	Fort Worth, TX, United StatesHQ checked Sep 17, 2026	201-500	59 contacts →
	Strong 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
17	Simplex Homes	Partial evidence	Scranton, PA, United StatesHQ checked Sep 17, 2026	11-50	58 contacts →
	Partial evidence “Builders of the highest quality modular homes and prefab homes Simplex offers the finest quality modular home construction for your custom prefab home.” Source: RevenueBase Database · checked Sep 17, 2026
18	U.S. Engineering Innovations	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 17, 2026	51-200	57 contacts →
	Indirect evidence “Our story, which began in 2013, is born from the idea that we want to help change the way construction is done.” Source: RevenueBase Database · checked Sep 17, 2026
19	Homeway Commercial	Partial evidence	Deer Creek, IL, United StatesHQ checked Sep 17, 2026	51-200	55 contacts →
	Partial 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
20	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
21	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
22	Blueprint	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 17, 2026	51-200	51 contacts →
	Partial evidence “Blueprint is an integrated offsite building system for wood framed multi-unit residential buildings headquartered in Baltimore, Maryland” Source: RevenueBase Database · checked Sep 17, 2026
23	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
24	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
25	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

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 green building companies. 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 green building companies.
Partial evidence: Its own public description names part of modular green building companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name modular green building companies. 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 948 modular green building companies based in the United States

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Modular green building companies based in the United States at a glance

As of Sep 17, 2026

33.0%Verified-email coverage

15.6Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

522

11-50

270

51-200

117

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 948 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 green building 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “modular green building 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 modular green building 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 modular green building companies, 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, 4,890 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 green building companies by metro

Modular green building companies 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 green building 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 modular green building companies are there based in the United States?

RevenueBase identified 948 modular green building companies 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 green building companies?

New York leads with 25 headquartered companies, followed by Austin (19) and Houston (17).

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 4,890 verified decision-maker contacts tracked across these 948 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.