Company lists · Data refreshed November 2026

Top 25 Civil engineering companies based in Ireland

Name: Civil engineering companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 237 companies tracked

Find 237 civil engineering companies based in Ireland, with 12,305 business contacts and 4,064 email addresses, as of November 2026. The companies provide services for infrastructure, land development, transportation, water systems, and related construction projects. Dublin is the single most-represented city among the companies listed.

Civil engineering companies plan, design, manage, and oversee infrastructure and land development projects, including transportation systems, utilities, water resources, and structural site work. This list covers companies that provide civil engineering, infrastructure planning, site development, surveying, project management, or related engineering services. Ranked by team size, largest first. Data current as of November 6, 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 Nov 6, 2026 86% judged on-target in blind review

237Companies

12,305Contacts tracked

4,064Verified emails

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The 25 largest civil engineering companies based in Ireland

Ranked by team size

Top 25 of 237 civil engineering companies based in Ireland, ranked by team size, largest first. Data refreshed Nov 6, 2026. RevenueBase Smart Search rates how each company's information relates to civil engineering 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	Mercury	Indirect evidence	Dublin, IrelandHQ checked Nov 6, 2026	1,001-5,000	2,607 contacts →
	Indirect evidence “Mercury is the European leader in construction solutions.” Source: RevenueBase Database · checked Nov 6, 2026
2	Coffey	Strong evidence	Athenry, IrelandHQ checked Nov 6, 2026	201-500	383 contacts →
	Strong 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 Nov 6, 2026
3	ORS	Indirect evidence	Dublin, IrelandHQ checked Nov 6, 2026	51-200	299 contacts →
	Indirect evidence “Since 1991, ORS has led the way in anticipating and responding to diverse client requirements in the construction industry.” Source: RevenueBase Database · checked Nov 6, 2026
4	Roughan & O'donovan	Strong evidence	Sandyford, IrelandHQ checked Nov 6, 2026	201-500	254 contacts →
	Strong evidence “Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: RevenueBase Database · checked Nov 6, 2026
5	Roadbridge LTD	Strong evidence	Limerick, IrelandHQ checked Nov 6, 2026	n/a	208 contacts →
	Strong evidence “Founded in 1967, and operating in Ireland, United Kingdom, and the Middle East, Roadbridge is a leader in Civil Engineering.” Source: RevenueBase Database · checked Nov 6, 2026
6	Dbfl Consulting Engineers LTD	Partial evidence	Dublin, IrelandHQ checked Nov 6, 2026	51-200	190 contacts →
	Partial evidence “DBFL is a fully Irish-owned firm specializing in the planning, engineering design and delivery within the property, infrastructure, environmental & energy sectors.” Source: RevenueBase Database · checked Nov 6, 2026
7	MWP	Partial evidence	Blackrock, IrelandHQ checked Nov 6, 2026	51-200	171 contacts →
	Partial evidence “MWP is a multi-disciplinary Engineering and Environmental Consulting Practice providing a first class service to its clients since it was founded in 1967.” Source: RevenueBase Database · checked Nov 6, 2026
8	Egis In Ireland	Partial evidence	Dundrum Road, IrelandHQ checked Nov 6, 2026	501-1,000	150 contacts →
	Partial evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Nov 6, 2026
9	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Nov 6, 2026	201-500	143 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 Nov 6, 2026
10	Shareridge	Strong evidence	Castlebar, IrelandHQ checked Nov 6, 2026	51-200	131 contacts →
	Strong evidence “Shareridge is a dynamic, modern and innovative civil engineering solutions specialist.” Source: RevenueBase Database · checked Nov 6, 2026
11	Fehily Timoney And Company	Strong evidence	Cork, IrelandHQ checked Nov 6, 2026	51-200	123 contacts →
	Strong evidence “Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Source: RevenueBase Database · checked Nov 6, 2026
12	Siac Construction LTD	Indirect evidence	Dublin, IrelandHQ checked Nov 6, 2026	201-500	120 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 Nov 6, 2026
13	Punch Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Nov 6, 2026	51-200	112 contacts →
	Partial evidence “PUNCH Consulting Engineers is the business name of Michael Punch and Partners Limited and is one of Ireland's leading + most experienced engineering consultancies.” Source: RevenueBase Database · checked Nov 6, 2026
14	Jons Civil Engineering Company LTD	Indirect evidence	Carranstown (duleek), IrelandHQ checked Nov 6, 2026	51-200	112 contacts →
	Indirect evidence “JCEL have been in operation since 1983.” Source: RevenueBase Database · checked Nov 6, 2026
15	Waterman Moylan Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Nov 6, 2026	51-200	108 contacts →
	Partial evidence “Waterman Moylan is a leading engineering and environmental consultancy providing specialist services to our clients in the property, infrastructure and environment markets in…” Source: RevenueBase Database · checked Nov 6, 2026
16	Clifton Scannell Emerson Associates	Partial evidence	Dun Laoghaire, IrelandHQ checked Nov 6, 2026	51-200	107 contacts →
	Partial evidence “Clifton Scannell Emerson Associates Clifton Scannell Emerson Associates (CSEA) are an Irish firm of Civil and Structural Consulting Engineers, with over seventy years’ experience…” Source: RevenueBase Database · checked Nov 6, 2026
17	Jennings O'donovan & Partners	Partial evidence	Sligo, IrelandHQ checked Nov 6, 2026	51-200	94 contacts →
	Partial evidence “Jennings O’Donovan is a multidisciplinary consulting engineering firm specialising in renewable energy, water supply, wastewater treatment and in the provision of planning and…” Source: RevenueBase Database · checked Nov 6, 2026
18	Richard Nolan Civil Engineering	Strong evidence	Tallaght, IrelandHQ checked Nov 6, 2026	51-200	78 contacts →
	Strong evidence “Richard Nolan Civil Engineering is at the heart of the Irish civil engineering and utilities ducting industry delivering the highest quality solution in the safest manner.” Source: RevenueBase Database · checked Nov 6, 2026
19	Sorensen Civil Engineering LTD	Strong evidence	Cork, IrelandHQ checked Nov 6, 2026	51-200	74 contacts →
	Strong evidence “Sorensen Civil Engineering Ltd is a multi-disciplined construction company that was established in 1977 and has grown to become one of Ireland's leaders in the civil and marine…” Source: RevenueBase Database · checked Nov 6, 2026
20	Source Civil LTD	Strong evidence	Donegal Town, IrelandHQ checked Nov 6, 2026	51-200	66 contacts →
	Strong evidence “Source Civil Ltd is a trusted leader in civil engineering, combining over 20 years of expertise with an unwavering commitment to innovation, integrity, safety, and quality.” Source: RevenueBase Database · checked Nov 6, 2026
21	LMH Engineering Ireland	Partial evidence	Arklow, IrelandHQ checked Nov 6, 2026	51-200	65 contacts →
	Partial evidence “Mechanical & Structural Engineering Solutions for both on-site and offsite construction.” Source: RevenueBase Database · checked Nov 6, 2026
22	Varming Consulting Engineers LTD	Indirect evidence	Dundrum, IrelandHQ checked Nov 6, 2026	11-50	64 contacts →
	Indirect evidence “At Varming, we’re all about cutting-edge design and meticulous oversight of mechanical and electrical services, whether it’s for brand-new constructions or revitalizing existing…” Source: RevenueBase Database · checked Nov 6, 2026
23	Kilcawley Construction	Indirect evidence	Sligo, IrelandHQ checked Nov 6, 2026	51-200	63 contacts →
	Indirect evidence “Kilcawley Construction provide comprehensive construction services in a wide range of sectors including commercial, educational, pharmaceutical, healthcare, hospitality…” Source: RevenueBase Database · checked Nov 6, 2026
24	CS Consulting Group Civil & Structural Engineers	Partial evidence	Dublin, IrelandHQ checked Nov 6, 2026	51-200	60 contacts →
	Partial evidence “Realising visions, delivering solutions: CS Consulting Group is a team of highly qualified civil and structural engineers and technicians offering responsive, innovative…” Source: RevenueBase Database · checked Nov 6, 2026
25	Cumnor Construction LTD	Strong evidence	Cork, IrelandHQ checked Nov 6, 2026	51-200	59 contacts →
	Strong evidence “Established in 1983, Cumnor Construction Ltd is one of Ireland’s most experienced building and civil engineering contractors.” Source: RevenueBase Database · checked Nov 6, 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: civil engineering 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 civil engineering companies.
Partial evidence: Its own public description names part of civil engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name civil engineering 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 237 civil engineering companies based in Ireland

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Civil engineering companies based in Ireland at a glance

As of Nov 6, 2026

33.0%Verified-email coverage

51.9Average contacts per company

11-50Median size (employees)

13.1%Largest-city concentration · Dublin

Nov 6, 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 237 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 civil engineering 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 “civil engineering 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 civil engineering 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 civil engineering 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, 4,064 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 November 6, 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.

Civil engineering companies by metro

Civil engineering companies in Dublin31

Frequently asked

What do civil engineering companies do?

Civil engineering companies plan, design, and oversee infrastructure and land development projects, including roads, bridges, utilities, water systems, and site work.

How many civil engineering companies are based in Ireland?

The list contains 237 civil engineering companies based in Ireland.

Which city has the most civil engineering companies?

Dublin is the single most-represented city among the companies on this list.

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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.