Company lists · Data refreshed September 2026

Top 25 Prefabricated modular construction companies based in Ireland

Name: Prefabricated modular construction companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 47 companies tracked

RevenueBase identified 47 prefabricated modular construction companies headquartered in Ireland as of September 2026 and tracks 541 professional contacts across them, including 261 with verified work emails. Limerick is the largest hub.

This list covers prefabricated modular construction companies headquartered in Ireland, 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

47Companies

541Contacts tracked

261Verified emails

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The 25 largest prefabricated modular construction companies based in Ireland

Ranked by team size

Top 25 of 47 prefabricated modular construction companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to prefabricated modular construction 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	Vision Built	Partial evidence	Tubbercurry, IrelandHQ checked Sep 17, 2026	51-200	71 contacts →
	Partial evidence “At Vision Built, we specialise in the design, manufacture, and installation of innovative 2D light gauge steel panelised structures, and 3D volumetric modular building solutions…” Source: RevenueBase Database · checked Sep 17, 2026
2	Cpac Modular	Partial evidence	Dunshaughlin, IrelandHQ checked Sep 17, 2026	51-200	51 contacts →
	Partial evidence “Building Futures: At CPAC Modular, we recognise the positive impact our modular buildings have on the built environment.” Source: RevenueBase Database · checked Sep 17, 2026
3	Procon Modular	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	11-50	31 contacts →
	Partial evidence “Manufacturing High Quality Off Site Constructed Modular Buildings.” Source: RevenueBase Database · checked Sep 17, 2026
4	Castle Group Ireland	Strong evidence	Galway, IrelandHQ checked Sep 17, 2026	201-500	29 contacts →
	Strong evidence “The Castle Group is a pioneering Irish fit-out and modular construction company with an international focus.” Source: RevenueBase Database · checked Sep 17, 2026
5	O'dwyer Steel	Indirect evidence	Na, IrelandHQ checked Sep 17, 2026	51-200	24 contacts →
	Indirect evidence “Overview: O'Dwyer Steel is one of Ireland's and the UK's leading Structural Steel Engineering businesses.” Source: RevenueBase Database · checked Sep 17, 2026
6	Modulacc	Partial evidence	Limerick, IrelandHQ checked Sep 17, 2026	51-200	22 contacts →
	Partial evidence “We specialise in the design, build, and installation of permanent and temporary modular buildings for purchase or hire.” Source: RevenueBase Database · checked Sep 17, 2026
7	Entekra Ireland	Partial evidence	Monaghan, IrelandHQ checked Sep 17, 2026	51-200	15 contacts →
	Partial evidence “Entekra™ is a design, engineering and manufacturing company that provides a fully integrated off-site solution (FIOSS™) for both residential and commercial construction.” Source: RevenueBase Database · checked Sep 17, 2026
8	Extraspace	Indirect evidence	Dublin 22, IrelandHQ checked Sep 17, 2026	51-200	14 contacts →
	Indirect evidence “Extraspace is a leading provider of customised permanant and temporary building solutions.” Source: RevenueBase Database · checked Sep 17, 2026
9	Ecomod	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “Are you looking for a temporary workspace, site accommodation, modular buildings or welfare units?” Source: RevenueBase Database · checked Sep 17, 2026
10	Calnan Group	Partial evidence	Co. Cork, IrelandHQ checked Sep 17, 2026	51-200	11 contacts →
	Partial evidence “Calnan Containers is based in Glanmire, Cork and forms part of the Calnan Group comprising of Calnan Containers, Calnan Engineering and Calnan Modular Buildings.” Source: RevenueBase Database · checked Sep 17, 2026
11	Instaspace Modular LTD	Partial evidence	Duleek, IrelandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Here at Instaspace Modular, we design, manufacture and deliver quality Modular Building Solutions to the Educational, Commercial, Medical, Pharmaceutical, Administration…” Source: RevenueBase Database · checked Sep 17, 2026
12	BRB Homes	Partial evidence	Swinford, IrelandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “BRB Homes has had a great start in business as Big Red Barn manufacturing and erecting Modular Event Structures that were to designed to look like an American style barn.” Source: RevenueBase Database · checked Sep 17, 2026
13	Alufactory LTD	Strong evidence	Nass, IrelandHQ checked Sep 17, 2026	51-200	11 contacts →
	Strong evidence “AluFactory Ltd - off site construction partner specialising in design, manufacture and installation of modular facade systems, aluminium glazing systems and metal processing.” Source: RevenueBase Database · checked Sep 17, 2026
14	Mechanical Modular Solutions	Strong evidence	Castlecomer, IrelandHQ checked Sep 17, 2026	11-50	11 contacts →
	Strong evidence “MMS is a newly established company specialising in prefabrication, off-site construction & Modular Solutions.” Source: RevenueBase Database · checked Sep 17, 2026
15	Buildwright Modular Concrete Homes	Partial evidence	Rockcorry, IrelandHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “BuildWright® is the only large-scale, turnkey modular concrete building system available in Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
16	Norspace	Partial evidence	Northern Ireland & Republic Of Ireland, IrelandHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Norspace is a leading provider of modular buildings, site accommodation, and welfare facilities with customers across Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
17	MJH Structural Engineers	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “Our team at MJH provide structural engineering design and detailing services to the offsite industry.” Source: RevenueBase Database · checked Sep 17, 2026
18	Greenframe Offsite Building Systems	Partial evidence	Ballinasloe, IrelandHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Greenstone Structures t\a GreenFrame Offsite Building Systems is an offsite construction company that designs, manufactures, and installs light gauge steel frame structures for…” Source: RevenueBase Database · checked Sep 17, 2026
19	Roadmaster Building Systems	Partial evidence	Kilkenny, IrelandHQ checked Sep 17, 2026	51-200	7 contacts →
	Partial evidence “Timber Frame Modular Buildings Modular Dwellings, Mobile Homes Building regulation compliant Bespoke manufacturing - all units customizable Sustainable buildings” Source: RevenueBase Database · checked Sep 17, 2026
20	Masterkabin LTD	Partial evidence	Innishannon, IrelandHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Founded in 1991, Masterkabin are Munster's leading Provider of Off-Site, Modular & Portable Building Solutions.” Source: RevenueBase Database · checked Sep 17, 2026
21	Fitzmac	Indirect evidence	Limerick, IrelandHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “FitzMac deliver building projects across multidisciplinary sectors to the highest architectural and sustainability standards with client satisfaction at the forefront.” Source: RevenueBase Database · checked Sep 17, 2026
22	Arch-I Modular Solutions	Indirect evidence	Stradone, IrelandHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Our unique steel-fabricated designs are built to last, whilst retaining full flexibility, as the uniqueness of our structure is such that units can be transported quickly and…” Source: RevenueBase Database · checked Sep 17, 2026
23	Gleoite Homes LTD	Indirect evidence	Galway, IrelandHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “At Gleoite Homes Ltd we provide energy-efficient homes and office units.” Source: RevenueBase Database · checked Sep 17, 2026
24	Advanced Space Providers	Partial evidence	Limerick, IrelandHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “Advanced Space Providers specialise in the supply and installation of Modular & Pre-Engineered Modular Buildings to the Educational, Healthcare, Commercial and Residential sectors…” Source: RevenueBase Database · checked Sep 17, 2026
25	A Space Cabins LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “A Space Cabins Ltd was established in 2003 as a specialist supplier of portable accommodation facilities to industry & state sectors in Ireland.” 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: prefabricated modular construction 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 prefabricated modular construction companies.
Partial evidence: Its own public description names part of prefabricated modular construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name prefabricated modular construction 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 47 prefabricated modular construction companies based in Ireland

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Prefabricated modular construction companies based in Ireland at a glance

As of Sep 17, 2026

48.2%Verified-email coverage

11.5Average contacts per company

11-50Median size (employees)

6.4%Largest-city concentration · Limerick

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 47 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 prefabricated modular construction 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 Ireland whose own description of what they do matches “prefabricated modular construction 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 prefabricated modular construction 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 prefabricated modular construction companies, and records with no verified work email. Companies headquartered outside Ireland 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, 261 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 prefabricated modular construction 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 prefabricated modular construction companies are there based in Ireland?

RevenueBase identified 47 prefabricated modular construction companies headquartered in Ireland 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?

Vision Built, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most prefabricated modular construction companies?

Limerick leads with 3 headquartered companies, followed by Dublin (2) and Dunshaughlin (2).

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 261 verified decision-maker contacts tracked across these 47 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.