Company lists · Data refreshed September 2026

Top 25 Infrastructure development firms based in Ireland

Name: Infrastructure development firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 50 companies tracked

RevenueBase identified 50 infrastructure development firms headquartered in Ireland as of September 2026 and tracks 4,109 professional contacts across them, including 1,595 with verified work emails. Dublin is the largest hub.

This list covers infrastructure development firms 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 20, 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 20, 2026 86% judged on-target in blind review

50Companies

4,109Contacts tracked

1,595Verified emails

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

The 25 largest infrastructure development firms based in Ireland

Ranked by team size

Top 25 of 50 infrastructure development firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure development 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	Mercury	Indirect evidence	Dublin, IrelandHQ checked Sep 20, 2026	1,001-5,000	2,418 contacts →
	Indirect evidence “Mercury is the European leader in construction solutions.” Source: RevenueBase Database · checked Sep 20, 2026
2	Ward And Burke	Indirect evidence	Kilcolgan, IrelandHQ checked Sep 20, 2026	1,001-5,000	632 contacts →
	Indirect evidence “Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…” Source: RevenueBase Database · checked Sep 20, 2026
3	Coffey	Indirect evidence	Athenry, IrelandHQ checked Sep 20, 2026	201-500	324 contacts →
	Indirect evidence “Coffey is a family-owned civil engineering-led company operating in every major construction sector throughout Ireland and the UK.” Source: RevenueBase Database · checked Sep 20, 2026
4	Egis In Ireland	Indirect evidence	Dundrum Road, IrelandHQ checked Sep 20, 2026	501-1,000	143 contacts →
	Indirect evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Sep 20, 2026
5	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Sep 20, 2026	201-500	136 contacts →
	Partial evidence “Delivering Successful Engineering and Technical Services Secto Services is a fast growing Infrastructure build and engineering solutions company where customer service and the…” Source: RevenueBase Database · checked Sep 20, 2026
6	Siac Construction LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 20, 2026	201-500	107 contacts →
	Indirect evidence “Founded in 1913, SIAC's business has grown through our reputation for delivering quality projects that always meet and often exceed our clients' expectations.” Source: RevenueBase Database · checked Sep 20, 2026
7	Castlebrowne	Indirect evidence	Dublin, IrelandHQ checked Sep 20, 2026	11-50	31 contacts →
	Indirect evidence “Castlebrowne is a civil engineering and building contractor providing a full range of construction services.” Source: RevenueBase Database · checked Sep 20, 2026
8	SDS Design Engineers	Indirect evidence	Castlebar, IrelandHQ checked Sep 20, 2026	11-50	31 contacts →
	Indirect evidence “Established in 2003, we are an award winning design focused civil, structural, geotechnical and water engineering practice.” Source: RevenueBase Database · checked Sep 20, 2026
9	Rubicon Capital Advisors	Partial evidence	Dublin, IrelandHQ checked Sep 20, 2026	11-50	31 contacts →
	Partial evidence “Rubicon is one of the world’s leading investment banking firms focused solely on the infrastructure, energy & utilities sectors.” Source: RevenueBase Database · checked Sep 20, 2026
10	Glas Civil Engineering LTD	Indirect evidence	Kilheffernan, IrelandHQ checked Sep 20, 2026	51-200	18 contacts →
	Indirect evidence “Introduction Glas Civil Engineering Ltd was founded in 2013 with the mission of delivering top-quality service to our clients.” Source: RevenueBase Database · checked Sep 20, 2026
11	Kilgallen & Partners Consulting Engineers	Indirect evidence	Portlaoise, IrelandHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Kilgallen and Partners perform civil and structural engineering services.” Source: RevenueBase Database · checked Sep 20, 2026
12	Mcginty & O'shea LTD	Indirect evidence	Cork, IrelandHQ checked Sep 20, 2026	51-200	14 contacts →
	Indirect evidence “McGinty & O’Shea Ltd.(Building & Civil Engineering Contractors) operates across the many diverse sectors of the Irish construction industry.” Source: RevenueBase Database · checked Sep 20, 2026
13	Conradh Construction	Indirect evidence	Limerick, IrelandHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Civil Engineering Company who specialize in Earthworks, In-situ Concrete, Kerbing, Drainage, Ducting, Watermains & Water Treatment Works, Roadworks & Building Construction.” Source: RevenueBase Database · checked Sep 20, 2026
14	Murphy Ireland	Partial evidence	IrelandHQ checked Sep 20, 2026	501-1,000	13 contacts →
	Partial evidence “Over the past 55 years, Murphy Ireland has built a reputation for quality and excellence, offering industry-leading services in transportation, infrastructure, energy, structural…” Source: RevenueBase Database · checked Sep 20, 2026
15	Datum Building & Civil Engineering LTD	Indirect evidence	Tralee, IrelandHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Datum Building & Civil Engineering provide a comprehensive suite of solutions for all construction or civil engineering projects.” Source: RevenueBase Database · checked Sep 20, 2026
16	M. Fitzgibbon Contractors LTD	Indirect evidence	Ennis, IrelandHQ checked Sep 20, 2026	51-200	8 contacts →
	Indirect evidence “Construction & Civil Engineering Company Based in County Clare” Source: RevenueBase Database · checked Sep 20, 2026
17	ESK	Partial evidence	Clonmel, IrelandHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “At ESK, we are guided by a clear mission: to build the infrastructure that will facilitate the change to a sustainable future.” Source: RevenueBase Database · checked Sep 20, 2026
18	TA Group.Ie	Indirect evidence	Kiltimagh, IrelandHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “TA Group is a complete multidisciplinary service provider in the Civil Engineering and Building sector.” Source: RevenueBase Database · checked Sep 20, 2026
19	MHL Consulting Engineers	Indirect evidence	Cork, IrelandHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “MHL & Associates Ltd.” Source: RevenueBase Database · checked Sep 20, 2026
20	CLARE	Partial evidence	Rathcoole, IrelandHQ checked Sep 20, 2026	201-500	4 contacts →
	Partial evidence “Irish civil engineering contracts, specialising in Airport Infrastructure, Roadworks, Landfill Projects, Watermains Systems and Business Parks.” Source: RevenueBase Database · checked Sep 20, 2026
21	TJ O Connor And Associates	Indirect evidence	Dublin, IrelandHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence “Since 1937 T.” Source: RevenueBase Database · checked Sep 20, 2026
22	Dancor Civil Engineering	Indirect evidence	Dunleer, IrelandHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence “Since 2008, Dancor Civil Engineering has built a solid reputation for quality and service.” Source: RevenueBase Database · checked Sep 20, 2026
23	Housing Infrastructure Services Company Hisco	Strong evidence	IrelandHQ checked Sep 20, 2026	1-10	4 contacts →
	Strong evidence “HISCo has the potential to deliver infrastructure that is holding up the advancement of residential development due to a lack of State and/or local funding.” Source: RevenueBase Database · checked Sep 20, 2026
24	Clar-Con Construction LTD	Indirect evidence	Jordanstown, IrelandHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “Clar-Con construction Ltd was set up in 2019 (previously Fal-Clar construction) and draws on over 20 years of experience in the construction sector.” Source: RevenueBase Database · checked Sep 20, 2026
25	Kendra Civil Engineering	Partial evidence	Dublin 22, IrelandHQ checked Sep 20, 2026	51-200	2 contacts →
	Partial evidence “Kendra has, since through it’s Kendra Civil Engineering Ltd subsidiary, been successfully delivering infrastructural projects in Power, Water, Telecommunications, Broadband…” Source: RevenueBase Database · checked Sep 20, 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: infrastructure development 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 infrastructure development firms.
Partial evidence: Its own public description names part of infrastructure development firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure development 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 50 infrastructure development firms based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,595 reachable decision-makers.

Free signup · no credit card

View the full list →

Infrastructure development firms based in Ireland at a glance

As of Sep 20, 2026

38.8%Verified-email coverage

82.2Average contacts per company

11-50Median size (employees)

14.0%Largest-city concentration · Dublin

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 50 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 infrastructure development 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 Ireland whose own description of what they do matches “infrastructure development 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 infrastructure development 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 infrastructure development firms, 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, 1,595 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 20, 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 infrastructure development 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 infrastructure development firms are there based in Ireland?

RevenueBase identified 50 infrastructure development firms 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?

Mercury, headquartered in Blanchardstown, tops this list with the largest team on record.

Which city has the most infrastructure development firms?

Dublin leads with 7 headquartered companies, followed by Athlone (2) and Cork (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 1,595 verified decision-maker contacts tracked across these 50 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 50 infrastructure development firms based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Infrastructure development firms by geography

Browse the directory

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.