Company lists · Data verified August 2026

Top 25 Construction consulting firms based in Ireland

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 217 companies tracked

There are 217 construction consulting firms headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 3,901 professional contacts across them, including 1,833 with verified work emails and 166 with mobile numbers. Dublin is the largest hub.

This list covers construction consulting firms headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

217Companies

3,901Contacts tracked

1,833Verified emails

166Mobile numbers

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The 25 largest construction consulting firms based in Ireland

Ranked by team size

Top 25 of 217 construction consulting firms based in Ireland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	John Paul Construction	Oranmore Galway	501-1,000	694	362
2	Collen Construction	n/a	201-500	418	258
3	ORS	n/a	51-200	267	136
4	KSN	Dublin	51-200	165	59
5	ROSS	Athlone	51-200	82	24
6	Barrett Mahony Consulting Engineers	n/a	51-200	79	41
7	Mitchell Mcdermott	Dublin	51-200	75	60
8	Varming Consulting Engineers LTD	Roscommon	11-50	57	36
9	Kilcawley Construction	Maynooth	51-200	56	40
10	ECC Group	Clontarf	51-200	54	18
11	Monami Construction	n/a	51-200	53	33
12	Rogerson Reddan	Dublin	11-50	52	45
13	Cogent Associates Ireland	n/a	51-200	48	36
14	Mcelroy Associates	Dublin	11-50	45	36
15	Kpmg Construction Advisory	n/a	51-200	40	3
16	MMP	Rathquarter	11-50	36	29
17	Carey Building Contractors	n/a	51-200	32	21
18	WH Stephens	n/a	51-200	28	24
19	TBD Consultants	Greystones	11-50	27	24
20	Clandillon Civil Consulting LTD	Newbridge	11-50	24	19
21	Cora Consulting Engineers	Dublin	11-50	23	10
22	DJF Engineering Services LTD	n/a	11-50	23	9
23	OMC	Galway	11-50	22	14
24	Downes Associates	Dublin	11-50	21	14
25	Lohan & Donnelly Consulting Engineers	n/a	11-50	21	11

Showing 25 of 217 construction consulting firms based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,833 reachable decision-makers.

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Construction consulting firms based in Ireland at a glance

As of Aug 28, 2026

1-10Median size (employees)

DublinLargest hub · 36 HQs

166Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

109

11-50

51-200

201-500

501-1,000

1,001-5,000

Construction consulting firms by metro

Metro	Companies
Construction consulting firms in Dublin	36
Construction consulting firms in Limerick	9
Construction consulting firms in Cork	8
Construction consulting firms in Galway	5
Construction consulting firms in Naas	4
Construction consulting firms in Dundalk	4
Construction consulting firms in Maynooth	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “construction consulting firms”, with match quality audited by blind human judging, and headquartered in Ireland.
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: Contact records re-verify on a rolling cadence; 7 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many construction consulting firms are there based in Ireland?

There are 217 construction consulting firms headquartered in Ireland as of August 2026 (RevenueBase).

What is the largest company on this list?

John Paul Construction, headquartered in Oranmore Galway, tops this list with the largest team on record.

Which city has the most construction consulting firms?

Dublin leads with 36 headquartered companies, followed by Limerick (9) and Cork (8).

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 1,833 verified decision-maker contacts tracked across these 217 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.