Company lists · Data refreshed September 2026

Top 25 Environmental consulting firms for construction based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 116 companies tracked

RevenueBase identified 116 environmental consulting firms for construction headquartered in Ireland as of September 2026 and tracks 2,568 professional contacts across them, including 1,277 with verified work emails. Dublin is the largest hub.

This list covers environmental consulting firms for construction 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 28, 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 28, 2026 86% judged on-target in blind review

116Companies

2,568Contacts tracked

1,277Verified emails

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The 25 largest environmental consulting firms for construction based in Ireland

Ranked by team size

Top 25 of 116 environmental consulting firms for construction based in Ireland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to environmental consulting firms for construction: 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	Nicholas O'dwyer LTD	Strong evidence	Dublin, IrelandHQ checked Sep 28, 2026	201-500	284 contacts →
	Strong evidence “Nicholas O'Dwyer Ltd, Consulting Engineers, provide water engineering, environmental engineering and civil and structural engineering services to public and private sector clients.” Source: RevenueBase Database · checked Sep 28, 2026
2	Roughan & O'donovan	Partial evidence	Sandyford, IrelandHQ checked Sep 28, 2026	201-500	227 contacts →
	Partial evidence “Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
3	MKO	Partial evidence	Galway, IrelandHQ checked Sep 28, 2026	201-500	210 contacts →
	Partial evidence “MKO is Ireland’s largest Planning and Environmental consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
4	MWP	Strong evidence	Blackrock, IrelandHQ checked Sep 28, 2026	51-200	160 contacts →
	Strong 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 Sep 28, 2026
5	Fehily Timoney And Company	Partial evidence	Cork, IrelandHQ checked Sep 28, 2026	51-200	116 contacts →
	Partial 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 Sep 28, 2026
6	Waterman Moylan Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	99 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 Sep 28, 2026
7	Mitchell Mcdermott	Partial evidence	Dublin 4, IrelandHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “Mitchell McDermott is an independent firm of Construction Consultants founded by Paul Mitchell and Anthony McDermott in 2015.” Source: RevenueBase Database · checked Sep 28, 2026
8	Sorensen Civil Engineering LTD	Partial evidence	Cork, IrelandHQ checked Sep 28, 2026	51-200	69 contacts →
	Partial 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 Sep 28, 2026
9	Tandem Project Management LTD	Partial evidence	Blackrock, IrelandHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Source: RevenueBase Database · checked Sep 28, 2026
10	Kilcawley Construction	Partial evidence	Sligo, IrelandHQ checked Sep 28, 2026	51-200	56 contacts →
	Partial evidence “Kilcawley Construction provide comprehensive construction services in a wide range of sectors including commercial, educational, pharmaceutical, healthcare, hospitality…” Source: RevenueBase Database · checked Sep 28, 2026
11	Varming Consulting Engineers LTD	Partial evidence	Dundrum, IrelandHQ checked Sep 28, 2026	11-50	55 contacts →
	Partial 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 Sep 28, 2026
12	Axiseng	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	47 contacts →
	Partial evidence “Axiseng Consulting Engineers is a premier independent building services consulting engineering practice, founded in 2004 and celebrating 20 years of excellence in delivering…” Source: RevenueBase Database · checked Sep 28, 2026
13	Eireng Consulting Engineers LTD	Partial evidence	Blackrock, IrelandHQ checked Sep 28, 2026	11-50	38 contacts →
	Partial evidence “EirEng Consulting Engineers is a firm of highly experienced and motivated Civil and Structural Design Engineers with offices in Ireland and the UK, dedicated to providing cutting…” Source: RevenueBase Database · checked Sep 28, 2026
14	Malone O'regan Environmental	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “MOR Environmental is a leading environmental consultancy firm with offices in Dublin, Cork and Tullamore.” Source: RevenueBase Database · checked Sep 28, 2026
15	Woodrow Sustainable Solutions	Partial evidence	Ballisodare, IrelandHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Woodrow is an environmental consultancy based in Sligo.” Source: RevenueBase Database · checked Sep 28, 2026
16	Minerex Environmental LTD	Partial evidence	Dublin 14, IrelandHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “Minerex Environmental Ltd.(MEL) was established in 1994 as an independent Irish consultancy providing environmental services in the hydrogeological and environmental disciplines…” Source: RevenueBase Database · checked Sep 28, 2026
17	OMC	Indirect evidence	Galway, IrelandHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “OMC Group, we provide a seamless, multidisciplinary consultancy service, specialising in engineering, design, and compliance solutions for commercial projects.” Source: RevenueBase Database · checked Sep 28, 2026
18	Enviroguide A DNV Company	Strong evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	22 contacts →
	Strong evidence “Enviroguide Consulting has an established reputation for delivering environmental and sustainability consultancy services including ecology, environmental impact assessment…” Source: RevenueBase Database · checked Sep 28, 2026
19	KSN Horizon	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Climate change, ESG requirements and the transition to a low-carbon economy are reshaping the future of real estate.” Source: RevenueBase Database · checked Sep 28, 2026
20	Aquafact	Partial evidence	Galway, IrelandHQ checked Sep 28, 2026	1-10	20 contacts →
	Partial evidence “AQUAFACT, part of APEM Group, is an environmental consultancy established in 1986.” Source: RevenueBase Database · checked Sep 28, 2026
21	OSL Butler Consulting Engineers	Partial evidence	Cork, IrelandHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “We provide consultancy services to a broad span of clients, large and small, involving projects across all sectors of the construction industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	Cdga Consultants	Indirect evidence	Cork, IrelandHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “CDGA was founded in 1997.” Source: RevenueBase Database · checked Sep 28, 2026
23	Rowan Engineering Consultants	Partial evidence	Trim, IrelandHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Rowan Engineering Consultants are a team of excellent people that provide two specialist services - forensic engineering and environmental consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
24	Flynn Furney Environmental Consultants LTD	Partial evidence	Kinsale, IrelandHQ checked Sep 28, 2026	1-10	15 contacts →
	Partial evidence “Environmental consultancy involved in ecological surveys and design and environmental monitoring services.” Source: RevenueBase Database · checked Sep 28, 2026
25	Axis Environmental Services LTD	Partial evidence	Clondrinagh, IrelandHQ checked Sep 28, 2026	1-10	15 contacts →
	Partial evidence “AXIS environmental services provide a professionally tailored environmental consultancy to both the private and public sector.” Source: RevenueBase Database · checked Sep 28, 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: environmental consulting firms for construction. 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 environmental consulting firms for construction.
Partial evidence: Its own public description names part of environmental consulting firms for construction, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consulting firms for construction. 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 116 environmental consulting firms for construction based in Ireland

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Environmental consulting firms for construction based in Ireland at a glance

As of Sep 28, 2026

49.7%Verified-email coverage

22.1Average contacts per company

1-10Median size (employees)

15.5%Largest-city concentration · Dublin

Sep 28, 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 116 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 environmental consulting firms for construction, 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 “environmental consulting firms for construction”. 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 environmental consulting firms for construction), 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 environmental consulting firms for construction, 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, 1,277 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 28, 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 environmental consulting firms for construction, 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 environmental consulting firms for construction are there based in Ireland?

RevenueBase identified 116 environmental consulting firms for construction 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?

Nicholas O'dwyer LTD, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most environmental consulting firms for construction?

Dublin leads with 18 headquartered companies, followed by Galway (6) and Bray (3).

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 1,277 verified decision-maker contacts tracked across these 116 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 28, 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.