Company lists · Data refreshed September 2026

Top 25 Eco-friendly construction contractors based in Ireland

Name: Eco-friendly construction contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 59 companies tracked

RevenueBase identified 59 eco-friendly construction contractors headquartered in Ireland as of September 2026 and tracks 851 professional contacts across them, including 376 with verified work emails. Dublin is the largest hub.

This list covers eco-friendly construction contractors 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 16, 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 16, 2026 86% judged on-target in blind review

59Companies

851Contacts tracked

376Verified emails

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The 25 largest eco-friendly construction contractors based in Ireland

Ranked by team size

Top 25 of 59 eco-friendly construction contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to eco-friendly construction contractors: 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	Elliott Group	Partial evidence	Cavan, IrelandHQ checked Sep 16, 2026	201-500	239 contacts →
	Partial evidence “Construction has always been a pivotal part of the Elliott family.” Source: RevenueBase Database · checked Sep 16, 2026
2	Tritech Engineering	Indirect evidence	Dublin 22, IrelandHQ checked Sep 16, 2026	201-500	173 contacts →
	Indirect evidence “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Source: RevenueBase Database · checked Sep 16, 2026
3	Kilcawley Construction	Partial evidence	Sligo, IrelandHQ checked Sep 16, 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 16, 2026
4	Bretland	Indirect evidence	Edenderry, IrelandHQ checked Sep 16, 2026	51-200	43 contacts →
	Indirect evidence “Bretland was founded in 1998 by visionary entrepreneur, Fechin Daly.” Source: RevenueBase Database · checked Sep 16, 2026
5	Coolsivna Construction LTD	Partial evidence	Mount Bellew Bridge, IrelandHQ checked Sep 16, 2026	201-500	31 contacts →
	Partial evidence “Coolsivna Construction is a young vibrant construction company providing reliable, efficient, hands on service for medium to large sized construction projects.” Source: RevenueBase Database · checked Sep 16, 2026
6	KSN Horizon	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 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 16, 2026
7	Passive Dynamics	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	15 contacts →
	Indirect evidence “Passive Dynamics was set up in 2020 with a vision that expert knowledge and passion can empower.” Source: RevenueBase Database · checked Sep 16, 2026
8	ENCON	Indirect evidence	Waterford, IrelandHQ checked Sep 16, 2026	11-50	14 contacts →
	Indirect evidence “Encon is a sustainable building, retrofit, and renewables company committed to transforming how Ireland builds, renovates, and powers its spaces.” Source: RevenueBase Database · checked Sep 16, 2026
9	Meehan Green, A KEO Company	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	11 contacts →
	Indirect evidence “Meehan Green is a company based in Dublin, Ireland that provides sustainability and green building certifications consulting services.” Source: RevenueBase Database · checked Sep 16, 2026
10	Arken Construction	Partial evidence	Co. Sligo, IrelandHQ checked Sep 16, 2026	11-50	9 contacts →
	Partial evidence “Arken Construction was established in 2007 and has since grown dramatically in both size and reputation.” Source: RevenueBase Database · checked Sep 16, 2026
11	Ecohouse Developments Limited	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	8 contacts →
	Indirect evidence “We are a tight knit in‐house team of designers, architects and builders, committed to creating beautiful, energy efficient homes and buildings, working towards a passive standard.” Source: RevenueBase Database · checked Sep 16, 2026
12	DPSQ	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	4 contacts →
	Indirect evidence “Our collaboration brings together divergent skills and experience through design innovation.” Source: RevenueBase Database · checked Sep 16, 2026
13	MMC ECO Homes	Partial evidence	Galway, IrelandHQ checked Sep 16, 2026	11-50	4 contacts →
	Partial evidence “At MMC Eco Homes, we build better homes for a brighter, greener future.” Source: RevenueBase Database · checked Sep 16, 2026
14	Hussey Architects	Indirect evidence	Dublin 4, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “Our focus is on designing simple sustainable buildings that respect their context.” Source: RevenueBase Database · checked Sep 16, 2026
15	Regan Construction	Partial evidence	Dublin 22, IrelandHQ checked Sep 16, 2026	51-200	3 contacts →
	Partial evidence “Regan Construction is a leading diverse construction firm, trusted by its clients to deliver cost-effective, efficient and sustainable solutions for a wide range of construction…” Source: RevenueBase Database · checked Sep 16, 2026
16	Geraghty Energy Consultants LTD	Indirect evidence	Dublin 7, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “We at Geraghty Energy Consultants Ltd.” Source: RevenueBase Database · checked Sep 16, 2026
17	Primabuild LTD	Indirect evidence	Dublin City, IrelandHQ checked Sep 16, 2026	11-50	3 contacts →
	Indirect evidence “Experience delivering excellence’ sums up PrimaBuild.” Source: RevenueBase Database · checked Sep 16, 2026
18	Passive House Plus	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “The leading green building magazine in the UK and Ireland, Passive House Plus is a bimonthly, editorially-led title set up to help design professionals, contractors & clients…” Source: RevenueBase Database · checked Sep 16, 2026
19	BKRN	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	2 contacts →
	Partial evidence “BKRN was established in 2010 and has since earned a strong reputation for excellence within the construction industry.” Source: RevenueBase Database · checked Sep 16, 2026
20	HB Architects LTD	Indirect evidence	Sligo, IrelandHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence “Our practice, based in Sligo, Ireland, focuses on delivering high-quality design solutions for residential, commercial, and public projects.” Source: RevenueBase Database · checked Sep 16, 2026
21	Celtic Contractors Ireland	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	1-10	2 contacts →
	Strong evidence “Celtic Contractors deliver a wide range of high quality construction services including design & build to both commercial and residential clients.” Source: RevenueBase Database · checked Sep 16, 2026
22	Krüger Lyons	Indirect evidence	Citywest, IrelandHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence “Krüger \| Lyons are a dynamic architectural firm with a passion for contemporary sustainable design.” Source: RevenueBase Database · checked Sep 16, 2026
23	Sammon Builders	Partial evidence	Aughnasheelin, IrelandHQ checked Sep 16, 2026	11-50	1 contacts →
	Partial evidence “Sammon Builders is a long established family firm which has been in the construction business since the 1970’s.” Source: RevenueBase Database · checked Sep 16, 2026
24	Gardens Forever	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	1 contacts →
	Partial evidence “Gardens Forever is an award-winning landscape design and construction firm based out of Dublin specializing in providing contextual and sustainable landscaping solutions.” Source: RevenueBase Database · checked Sep 16, 2026
25	Hibco LTD	Indirect evidence	Oranmore, IrelandHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Hibco Ltd was founded in 2003 by Company Director Martin Hibbitt.” Source: RevenueBase Database · checked Sep 16, 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: eco-friendly construction contractors. 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 eco-friendly construction contractors.
Partial evidence: Its own public description names part of eco-friendly construction contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name eco-friendly construction contractors. 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 59 eco-friendly construction contractors based in Ireland

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Eco-friendly construction contractors based in Ireland at a glance

As of Sep 16, 2026

44.2%Verified-email coverage

14.4Average contacts per company

11-50Median size (employees)

28.8%Largest-city concentration · Dublin

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 59 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 eco-friendly construction contractors, 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 “eco-friendly construction contractors”. 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 eco-friendly construction contractors), 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 eco-friendly construction contractors, 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, 376 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 16, 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 eco-friendly construction contractors, 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 eco-friendly construction contractors are there based in Ireland?

RevenueBase identified 59 eco-friendly construction contractors 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?

Elliott Group, headquartered in Cavan, tops this list with the largest team on record.

Which city has the most eco-friendly construction contractors?

Dublin leads with 17 headquartered companies, followed by Cork (2) and Galway (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 376 verified decision-maker contacts tracked across these 59 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 16, 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.