Company lists · Data refreshed September 2026

Top 25 Environmental impact assessment companies based in Ireland

Name: Environmental impact assessment companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 47 companies tracked

RevenueBase identified 47 environmental impact assessment companies headquartered in Ireland as of September 2026 and tracks 765 professional contacts across them, including 341 with verified work emails. Dublin is the largest hub.

This list covers environmental impact assessment companies 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 19, 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 19, 2026 86% judged on-target in blind review

47Companies

765Contacts tracked

341Verified emails

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The 25 largest environmental impact assessment companies based in Ireland

Ranked by team size

Top 25 of 47 environmental impact assessment companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental impact assessment 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	MKO	Partial evidence	Galway, IrelandHQ checked Sep 19, 2026	201-500	210 contacts →
	Partial evidence “MKO is Ireland’s largest Planning and Environmental consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
2	Fehily Timoney And Company	Partial evidence	Cork, IrelandHQ checked Sep 19, 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 19, 2026
3	Ayrton Group	Indirect evidence	Dublin 24, IrelandHQ checked Sep 19, 2026	51-200	75 contacts →
	Indirect evidence “Ayrton Group is a dynamic professional services company dedicated to excellence with a diverse portfolio of businesses ranging from risk management, engineering, recruitment…” Source: RevenueBase Database · checked Sep 19, 2026
4	Malone O'regan Environmental	Partial evidence	Dublin, IrelandHQ checked Sep 19, 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 19, 2026
5	Woodrow Sustainable Solutions	Partial evidence	Ballisodare, IrelandHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “Woodrow is an environmental consultancy based in Sligo.” Source: RevenueBase Database · checked Sep 19, 2026
6	Enviroguide A DNV Company	Strong evidence	Dublin, IrelandHQ checked Sep 19, 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 19, 2026
7	Aquafact	Partial evidence	Galway, IrelandHQ checked Sep 19, 2026	1-10	20 contacts →
	Partial evidence “AQUAFACT, part of APEM Group, is an environmental consultancy established in 1986.” Source: RevenueBase Database · checked Sep 19, 2026
8	TMS Environment LTD	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Specialists in laboratory analysis, monitoring and environmental consultancy” Source: RevenueBase Database · checked Sep 19, 2026
9	Rowan Engineering Consultants	Partial evidence	Trim, IrelandHQ checked Sep 19, 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 19, 2026
10	Flynn Furney Environmental Consultants LTD	Partial evidence	Kinsale, IrelandHQ checked Sep 19, 2026	1-10	15 contacts →
	Partial evidence “Environmental consultancy involved in ecological surveys and design and environmental monitoring services.” Source: RevenueBase Database · checked Sep 19, 2026
11	Speco Sustainability Consultancy	Indirect evidence	Galway, IrelandHQ checked Sep 19, 2026	1-10	14 contacts →
	Indirect evidence “Speco Sustainability Consultancy Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
12	Caas LTD	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “CAAS is one of Ireland’s longest established providers of planning and environmental advice to public sector bodies and planning authorities.” Source: RevenueBase Database · checked Sep 19, 2026
13	Environmental Efficiency	Partial evidence	Bray, IrelandHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “Our mission is to help improve our clients’ environmental performance in cost effective and practical ways and as a result build a long term relationship.” Source: RevenueBase Database · checked Sep 19, 2026
14	Coyle Environmental	Partial evidence	Castlerea, IrelandHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “We specialise in providing Environmental Monitoring and Consulting services, operating nationwide from our base in the West of Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
15	O'donnell Environmental LTD	Partial evidence	Cork, IrelandHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “O'Donnell Environmental is a biodiversity and sustainabilty consultancy based in Cork City and operating nationwide.” Source: RevenueBase Database · checked Sep 19, 2026
16	Climate Matters LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Climate Matters Ltd was founded in 2019 on the back of witnessing the transition in the energy sector over the previous decade.” Source: RevenueBase Database · checked Sep 19, 2026
17	Panther Environmental Solutions LTD	Partial evidence	Green Road, IrelandHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Panther Environmental Solutions Ltd is an Environmental Consultancy Company providing expert environmental advice to the Food, Manufacturing and Pharmaceutical Industries.” Source: RevenueBase Database · checked Sep 19, 2026
18	Aqualicense	Partial evidence	Arklow, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Aqualicense is an environmental and licensing consultancy specialising in land and marine development.” Source: RevenueBase Database · checked Sep 19, 2026
19	Ecos Environmental Consultants Limited	Partial evidence	Limerick, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “ECOS Environmental Consultants works with Multi-National and SME clients using environmental management as a business tool to support a broad range of business sectors.” Source: RevenueBase Database · checked Sep 19, 2026
20	J Sheils Planning & Environmental LTD	Partial evidence	Navan, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “J Sheils Planning & Environmental Ltd (JSPE) specialises in providing professional planning, valuation and environmental advice to the extractive and inert waste industries and…” Source: RevenueBase Database · checked Sep 19, 2026
21	Ecology Ireland Wildlife Consultants LTD	Indirect evidence	Co. Limerick, IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
22	Moore Archaeological & Environmental Services Limited	Partial evidence	Co. Galway, IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Moore Group is a multi-disciplinary environmental, planning and heritage resource management consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
23	Traynor Environmental LTD	Partial evidence	Co. Cavan, IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Traynor Environmental Ltd offer a wide range of Environmental Services for clients throughout Ireland ranging from Multinational Companies, Local Authorities, Food Production…” Source: RevenueBase Database · checked Sep 19, 2026
24	Kennett Consulting LTD	Indirect evidence	IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Kennett Consulting is a landscape architecture practice based in Dublin, Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
25	SSI Sustainability Solutions Ireland LTD	Partial evidence	Castlebar, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “Sustainability Solutions Ireland is a dynamic and forward-thinking environmental consulting firm based in Ireland, dedicated to empowering businesses in their journey towards…” Source: RevenueBase Database · checked Sep 19, 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 impact assessment 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 environmental impact assessment companies.
Partial evidence: Its own public description names part of environmental impact assessment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental impact assessment 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 47 environmental impact assessment companies based in Ireland

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Environmental impact assessment companies based in Ireland at a glance

As of Sep 19, 2026

44.6%Verified-email coverage

16.3Average contacts per company

1-10Median size (employees)

17.0%Largest-city concentration · Dublin

Sep 19, 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 47 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 impact assessment 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 “environmental impact assessment 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 environmental impact assessment 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 environmental impact assessment 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, 341 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 19, 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 impact assessment companies, 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 impact assessment companies are there based in Ireland?

RevenueBase identified 47 environmental impact assessment companies 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?

MKO, headquartered in Galway, tops this list with the largest team on record.

Which city has the most environmental impact assessment companies?

Dublin leads with 8 headquartered companies, followed by Galway (4) and Bray (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 341 verified decision-maker contacts tracked across these 47 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 19, 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.