Company lists · Data refreshed September 2026

Top 25 Environmental consultancy firms based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 182 companies tracked

RevenueBase identified 182 company matches for environmental consultancy firms associated with Ireland as of September 2026 and tracks 3,012 professional contacts across them, including 1,370 with verified work emails and 119 with mobile numbers. Dublin is the largest hub.

This list covers company matches for environmental consultancy firms associated with Ireland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 2, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 2, 2026 How this list was built

182Companies

3,012Contacts tracked

1,370Verified emails

119Mobile numbers

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The 25 largest environmental consultancy firms based in Ireland

Ranked by team size

Top 25 of 182 company matches for environmental consultancy firms based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 2, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	O'connor Sutton Cronin	Exact match	Cork, Ireland	201-500	236 contacts →
	Exact match “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
2	MKO	Exact match	Ireland	201-500	210 contacts →
	Exact match “MKO is Ireland’s largest Planning and Environmental consultancy.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
3	Dbfl Consulting Engineers LTD	Exact match	Ireland	51-200	181 contacts →
	Exact match “DBFL is a fully Irish-owned firm specializing in the planning, engineering design and delivery within the property, infrastructure, environmental & energy sectors.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
4	MWP	Exact match	Ireland	51-200	160 contacts →
	Exact match “MWP is a multi-disciplinary Engineering and Environmental Consulting Practice providing a first class service to its clients since it was founded in 1967.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
5	Ryan Hanley, NOW Stantec	Exact match	Cork, Ireland	51-200	116 contacts →
	Exact match “Ryan Hanley is a leading Engineering and Environmental Consultancy.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
6	Fehily Timoney And Company	Exact match	Cork, Ireland	51-200	115 contacts →
	Exact match “Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
7	Waterman Moylan Consulting Engineers	Exact match	Ireland	51-200	102 contacts →
	Exact match “Waterman Moylan is a leading engineering and environmental consultancy providing specialist services to our clients in the property, infrastructure and environment markets in…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
8	Jennings O'donovan & Partners	Exact match	Sligo, Ireland	51-200	79 contacts →
	Exact match “Jennings O’Donovan is a multidisciplinary consulting engineering firm specialising in renewable energy, water supply, wastewater treatment and in the provision of planning and…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
9	Mitchell Mcdermott	Exact match	Dublin, Ireland	51-200	75 contacts →
	Exact match “Mitchell McDermott is an independent firm of Construction Consultants founded by Paul Mitchell and Anthony McDermott in 2015.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
10	Ayrton Group	Exact match	Tallaght, Ireland	51-200	75 contacts →
	Exact match “Ayrton Group is a dynamic professional services company dedicated to excellence with a diverse portfolio of businesses ranging from risk management, engineering, recruitment…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
11	AWN Consulting LTD	Exact match	Ireland	51-200	74 contacts →
	Exact match “AWN Consulting is a multidisciplinary consultancy offering specialist design advice in respect of a wide range of engineering and environmental disciplines.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
12	Southern Scientific Services LTD	Exact match	Galway, Ireland	51-200	54 contacts →
	Exact match “We are an Irish owned and operated environmental consultancy and testing facility.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
13	Axiseng	Exact match	Ireland	11-50	47 contacts →
	Exact match “Axiseng Consulting Engineers is a premier independent building services consulting engineering practice, founded in 2004 and celebrating 20 years of excellence in delivering…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
14	NEO Environmental LTD	Exact match	Naas, Ireland	11-50	46 contacts →
	Exact match “Neo Environmental Ltd is a multidisciplinary consultancy that provide cost effective environmental and technical services to the commercial energy, property, aggregates and…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
15	Malone O'regan Environmental	Exact match	Dublin, Ireland	11-50	36 contacts →
	Exact match “MOR Environmental is a leading environmental consultancy firm with offices in Dublin, Cork and Tullamore.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
16	Shorcontrol Safety LTD	Exact match	Naas, Ireland	11-50	32 contacts →
	Exact match “Shorcontrol Safety is a Safety company which specialises in Safety training, Occupational Hygiene and Environmental consultancy services.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
17	Woodrow Sustainable Solutions	Exact match	Ballisodare, Ireland	11-50	28 contacts →
	Exact match “Woodrow is an environmental consultancy based in Sligo.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
18	Scott Cawley LTD	Exact match	Blackrock, Ireland	11-50	24 contacts →
	Exact match “Our mission is to be the Irish ecological consultancy of choice by providing the best available expertise and solutions for nature to our clients.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
19	Enviroguide A DNV Company	Exact match	Ireland	11-50	23 contacts →
	Exact match “Enviroguide Consulting has an established reputation for delivering environmental and sustainability consultancy services including ecology, environmental impact assessment…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
20	Minerex Environmental LTD	Exact match	Dublin, Ireland	11-50	22 contacts →
	Exact match “Minerex Environmental Ltd.(MEL) was established in 1994 as an independent Irish consultancy providing environmental services in the hydrogeological and environmental disciplines…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
21	OMC	Exact match	Galway, Ireland	11-50	22 contacts →
	Exact match “OMC Group, we provide a seamless, multidisciplinary consultancy service, specialising in engineering, design, and compliance solutions for commercial projects.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
22	Brady Shipman Martin	Exact match	Ireland	11-50	21 contacts →
	Exact match “Brady Shipman Martin is a leading multi-disciplinary consultancy serving private and public sector clients with landscape architecture, planning, urban design, environmental and…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
23	KSN Horizon	Exact match	Dublin, Ireland	11-50	21 contacts →
	Exact match “Climate change, ESG requirements and the transition to a low-carbon economy are reshaping the future of real estate.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
24	Antaris Consulting	Exact match	Ireland	11-50	20 contacts →
	Exact match “Founded in 1994, Antaris is an independent, Irish-owned consultancy and training firm with expertise in ISO Management Systems, Environment, Energy, Sustainability and Climate…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
25	OSL Butler Consulting Engineers	Exact match	Ireland	11-50	17 contacts →
	Exact match “We provide consultancy services to a broad span of clients, large and small, involving projects across all sectors of the construction industry.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental consultancy firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 182 environmental consultancy firms based in Ireland

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Environmental consultancy firms based in Ireland at a glance

As of Sep 2, 2026

45.5%Verified-email coverage

4.0%Mobile-number coverage

16.5Average contacts per company

1-10Median size (employees)

18.1%Largest-city concentration · Dublin

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

113

11-50

51-200

201-500

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Ireland whose business descriptions match “environmental consultancy firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,370 professional contacts with verified work emails across the full matched dataset. 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 2, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental consultancy firms by metro

Environmental consultancy firms in Dublin33

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental consultancy firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental consultancy firms are there based in Ireland?

RevenueBase identified 182 company matches for environmental consultancy firms associated with Ireland as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

O'connor Sutton Cronin tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental consultancy firms?

Dublin leads with 33 company records, followed by Cork (13) and Galway (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,370 professional contacts with verified work emails tracked across these 182 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 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 SmartSearch, 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.