Company lists · Data refreshed September 2026

Top 25 Green building contractors based in Ireland

Name: Green building 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 56 companies tracked

RevenueBase identified 56 green building contractors headquartered in Ireland as of September 2026 and tracks 506 professional contacts across them, including 255 with verified work emails. Dublin is the largest hub.

This list covers green building 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

56Companies

506Contacts tracked

255Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest green building contractors based in Ireland

Ranked by team size

Top 25 of 56 green building 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 green building 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	In2 Engineering	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	100 contacts →
	Partial evidence “Engineering Firm of the Year 2025 - Engineering Excellence Awards 2025 Great Place To Work 2025-2026 accredited IN2 is a modern building services and environmental engineering…” Source: RevenueBase Database · checked Sep 16, 2026
2	Kilcawley Construction	Indirect evidence	Sligo, IrelandHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect 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
3	MJF Interiors	Indirect evidence	Dublin City, IrelandHQ checked Sep 16, 2026	11-50	38 contacts →
	Indirect evidence “We are changing to better reflect the world around us, the design led customers we work with and the business we want to become.” Source: RevenueBase Database · checked Sep 16, 2026
4	Burke-Kennedy Doyle Architects	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	21 contacts →
	Indirect evidence “Burke-Kennedy Doyle Architects is one of Ireland’s leading architectural practices and has been a key player in the provision of innovative and professional architectural design…” Source: RevenueBase Database · checked Sep 16, 2026
5	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
6	Michael Fitzpatrick Architects	Indirect evidence	Cavan, IrelandHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence “Michael Fitzpatrick Architects Ltd are RIAI registered Architects with the Royal Institute of the Architects of Ireland.” Source: RevenueBase Database · checked Sep 16, 2026
7	Mosart	Partial evidence	IrelandHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “Providing expert design, energy consulting & training in high performance buildings since 1993.” Source: RevenueBase Database · checked Sep 16, 2026
8	FKP Architects	Indirect evidence	Dublin 2, IrelandHQ checked Sep 16, 2026	11-50	16 contacts →
	Indirect evidence “FKP Architects is a Dublin-based firm practicing Architecture and project management.” Source: RevenueBase Database · checked Sep 16, 2026
9	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
10	Systemcore	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	15 contacts →
	Indirect evidence “We are the next generation of M&E consulting engineers, dedicated to designing systems for low-carbon, intelligent, self-optimising spaces that enhance occupant well-being, and…” Source: RevenueBase Database · checked Sep 16, 2026
11	ENCON	Partial evidence	Waterford, IrelandHQ checked Sep 16, 2026	11-50	14 contacts →
	Partial 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
12	ENX	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Mechanical, Electrical and Sustainability Consulting Engineers” Source: RevenueBase Database · checked Sep 16, 2026
13	Ceardean Architects LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	1-10	12 contacts →
	Indirect evidence “Ceardean is a collaborative of experienced designers and specialist consultants with a shared ethos of skilled making and design collaboration.” Source: RevenueBase Database · checked Sep 16, 2026
14	Meehan Green, A KEO Company	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	11 contacts →
	Strong 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
15	Helena Mcelmeel Architects	Partial evidence	Galway, IrelandHQ checked Sep 16, 2026	1-10	9 contacts →
	Partial evidence “Architecture - Interiors - Low Energy / Passive Building - Public Realm / Urban Design” Source: RevenueBase Database · checked Sep 16, 2026
16	Ecohouse Developments Limited	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	8 contacts →
	Partial 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
17	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
18	Hussey Architects	Partial evidence	Dublin 4, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “Our focus is on designing simple sustainable buildings that respect their context.” Source: RevenueBase Database · checked Sep 16, 2026
19	Della Interiors LTD	Indirect evidence	Dublin 24, IrelandHQ checked Sep 16, 2026	11-50	3 contacts →
	Indirect evidence “Della Interiors is an all-in-one expert Renovation and Design service that caters for both commercial and residential projects.” Source: RevenueBase Database · checked Sep 16, 2026
20	Paul Doherty Architects	Indirect evidence	Donegal Town, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “Paul Doherty Architects (0749723131) are an RIAI registered Practice.” Source: RevenueBase Database · checked Sep 16, 2026
21	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
22	Passive House Plus	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Strong 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
23	A.M Rogers Associates	Indirect evidence	Ashbourne, IrelandHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence “AMRA Engineering Consultants provides Mechanical, Electrical, Plumbing Design and Consulting services for commercial, industrial and residential developments throughout Ireland…” Source: RevenueBase Database · checked Sep 16, 2026
24	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
25	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

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: green building 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 green building contractors.
Partial evidence: Its own public description names part of green building contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green building 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 56 green building contractors based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 255 reachable decision-makers.

Free signup · no credit card

View the full list →

Green building contractors based in Ireland at a glance

As of Sep 16, 2026

50.4%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

26.8%Largest-city concentration · Dublin

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 56 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 green building 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 “green building 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 green building 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 green building 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, 255 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 green building 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 green building contractors are there based in Ireland?

RevenueBase identified 56 green building 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?

In2 Engineering, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most green building contractors?

Dublin leads with 15 headquartered companies, followed by Ashbourne (1) and Athlone (1).

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 255 verified decision-maker contacts tracked across these 56 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.

Ready to reach these companies? Verified emails and direct dials for all 56 green building contractors based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Green building contractors by geography

Browse the directory

Browse: Companies home · All Ireland lists · All Green building contractors lists · New lists

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.