Company lists · Data refreshed September 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 Sep 6, 2026 237 companies tracked

Find 237 civil engineering companies based in Ireland, with 10,943 business contacts and 3,939 email addresses, as of September 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 September 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 Sep 6, 2026 86% judged on-target in blind review

237Companies

10,943Contacts tracked

3,939Verified emails

339Mobile numbers

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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 Sep 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 Sep 6, 2026	1,001-5,000	2,418 contacts →
	“Mercury is the European leader in construction solutions.” Source: company website · checked Sep 6, 2026
2	Ward And Burke	Strong evidence	Kilcolgan, IrelandHQ checked Sep 6, 2026	1,001-5,000	632 contacts →
	“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: company website · checked Sep 6, 2026
3	Coffey	Strong evidence	Athenry, IrelandHQ checked Sep 6, 2026	201-500	324 contacts →
	“Coffey is a family-owned civil engineering-led company operating in every major construction sector throughout Ireland and the UK.” Source: company website · checked Sep 6, 2026
4	Nicholas O'dwyer LTD	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	201-500	284 contacts →
	“Nicholas O'Dwyer Ltd, Consulting Engineers, provide water engineering, environmental engineering and civil and structural engineering services to public and private sector clients.” Source: company website · checked Sep 6, 2026
5	ORS	Indirect evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	270 contacts →
	“Since 1991, ORS has led the way in anticipating and responding to diverse client requirements in the construction industry.” Source: company website · checked Sep 6, 2026
6	O'connor Sutton Cronin	Partial evidence	Dublin, IrelandHQ checked Sep 6, 2026	201-500	241 contacts →
	“OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: company website · checked Sep 6, 2026
7	Roughan & O'donovan	Strong evidence	Sandyford, IrelandHQ checked Sep 6, 2026	201-500	227 contacts →
	“Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: company website · checked Sep 6, 2026
8	Roadbridge LTD	Strong evidence	Limerick, IrelandHQ checked Sep 6, 2026	n/a	199 contacts →
	“Founded in 1967, and operating in Ireland, United Kingdom, and the Middle East, Roadbridge is a leader in Civil Engineering.” Source: company website · checked Sep 6, 2026
9	Dbfl Consulting Engineers LTD	Partial evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	178 contacts →
	“DBFL is a fully Irish-owned firm specializing in the planning, engineering design and delivery within the property, infrastructure, environmental & energy sectors.” Source: company website · checked Sep 6, 2026
10	MWP	Partial evidence	Blackrock, IrelandHQ checked Sep 6, 2026	51-200	160 contacts →
	“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: company website · checked Sep 6, 2026
11	Egis In Ireland	Partial evidence	Dundrum Road, IrelandHQ checked Sep 6, 2026	501-1,000	143 contacts →
	“Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: company website · checked Sep 6, 2026
12	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Sep 6, 2026	201-500	136 contacts →
	“Delivering Successful Engineering and Technical Services Secto Services is a fast growing Infrastructure build and engineering solutions company where customer service and the…” Source: company website · checked Sep 6, 2026
13	Gdcl Consulting Engineers	Strong evidence	Dublin 12, IrelandHQ checked Sep 6, 2026	11-50	116 contacts →
	“From original inception in 1991, GDCL Consulting Engineers have evolved as a provider of civil and structural engineering services with a proven track record of successful…” Source: company website · checked Sep 6, 2026
14	Fehily Timoney And Company	Strong evidence	Cork, IrelandHQ checked Sep 6, 2026	51-200	116 contacts →
	“Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Source: company website · checked Sep 6, 2026
15	Siac Construction LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 6, 2026	201-500	107 contacts →
	“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: company website · checked Sep 6, 2026
16	Shareridge	Strong evidence	Castlebar, IrelandHQ checked Sep 6, 2026	51-200	106 contacts →
	“Shareridge is a dynamic, modern and innovative civil engineering solutions specialist.” Source: company website · checked Sep 6, 2026
17	Punch Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Sep 6, 2026	51-200	105 contacts →
	“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: company website · checked Sep 6, 2026
18	Jons Civil Engineering Company LTD	Indirect evidence	Carranstown (duleek), IrelandHQ checked Sep 6, 2026	51-200	103 contacts →
	“JCEL have been in operation since 1983.” Source: company website · checked Sep 6, 2026
19	Waterman Moylan Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	99 contacts →
	“Waterman Moylan is a leading engineering and environmental consultancy providing specialist services to our clients in the property, infrastructure and environment markets in…” Source: company website · checked Sep 6, 2026
20	Clifton Scannell Emerson Associates	Partial evidence	Dun Laoghaire, IrelandHQ checked Sep 6, 2026	51-200	92 contacts →
	“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: company website · checked Sep 6, 2026
21	Jennings O'donovan & Partners	Partial evidence	Sligo, IrelandHQ checked Sep 6, 2026	51-200	79 contacts →
	“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: company website · checked Sep 6, 2026
22	Barrett Mahony Consulting Engineers	Strong evidence	Dublin 2, IrelandHQ checked Sep 6, 2026	51-200	79 contacts →
	“Barrett Mahony Consulting Engineers is an established civil and structural engineering consultancy specialising in all aspects of civil and structural engineering and project…” Source: company website · checked Sep 6, 2026
23	Richard Nolan Civil Engineering	Strong evidence	Tallaght, IrelandHQ checked Sep 6, 2026	51-200	71 contacts →
	“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: company website · checked Sep 6, 2026
24	Sorensen Civil Engineering LTD	Strong evidence	Cork, IrelandHQ checked Sep 6, 2026	51-200	69 contacts →
	“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: company website · checked Sep 6, 2026
25	Source Civil LTD	Strong evidence	Donegal Town, IrelandHQ checked Sep 6, 2026	51-200	59 contacts →
	“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: company website · checked Sep 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 Sep 6, 2026

36.0%Verified-email coverage

3.1%Mobile-number coverage

46.2Average contacts per company

11-50Median size (employees)

11.4%Largest-city concentration · Dublin

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

3,6850–30

23931–60

161–90

390–180

11180+

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, 3,939 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 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 Dublin27

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.