Company lists · Data refreshed September 2026

Top 25 Sustainable building contractors based in Ireland

Name: Sustainable building contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 47 companies tracked

RevenueBase identified 47 sustainable building contractors headquartered in Ireland as of September 2026 and tracks 352 professional contacts across them, including 181 with verified work emails. Dublin is the largest hub.

This list covers sustainable 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 18, 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 18, 2026 86% judged on-target in blind review

47Companies

352Contacts tracked

181Verified emails

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The 25 largest sustainable building contractors based in Ireland

Ranked by team size

Top 25 of 47 sustainable building contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable 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	Kilcawley Construction	Indirect evidence	Sligo, IrelandHQ checked Sep 18, 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 18, 2026
2	Burke-Kennedy Doyle Architects	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
3	KSN Horizon	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
4	Michael Fitzpatrick Architects	Indirect evidence	Cavan, IrelandHQ checked Sep 18, 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 18, 2026
5	Mosart	Partial evidence	IrelandHQ checked Sep 18, 2026	11-50	17 contacts →
	Partial evidence “Providing expert design, energy consulting & training in high performance buildings since 1993.” Source: RevenueBase Database · checked Sep 18, 2026
6	Passive Dynamics	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
7	Systemcore	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
8	ENCON	Strong evidence	Waterford, IrelandHQ checked Sep 18, 2026	11-50	14 contacts →
	Strong 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 18, 2026
9	Wilson Architecture Ommw	Indirect evidence	Cork, IrelandHQ checked Sep 18, 2026	11-50	13 contacts →
	Indirect evidence “With over 35 years of experience, Wilson Architecture is one of Ireland’s leading award winning Architectural firms.” Source: RevenueBase Database · checked Sep 18, 2026
10	Ceardean Architects LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
11	Meehan Green, A KEO Company	Strong evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
12	Helena Mcelmeel Architects	Partial evidence	Galway, IrelandHQ checked Sep 18, 2026	1-10	9 contacts →
	Partial evidence “Architecture - Interiors - Low Energy / Passive Building - Public Realm / Urban Design” Source: RevenueBase Database · checked Sep 18, 2026
13	Ecohouse Developments Limited	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
14	Synergy Engineering LTD	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	8 contacts →
	Partial evidence “Synergy Engineering Limited (SEL) specializes in the design and development of building services, delivering innovative engineering solutions for commercial, retail, and…” Source: RevenueBase Database · checked Sep 18, 2026
15	Roundtower Lime	Strong evidence	Co.cork, IrelandHQ checked Sep 18, 2026	1-10	7 contacts →
	Strong evidence “Building on two decades of experience in the lime business Roundtower Lime has gone on to become a market leader in the supply of sustainable, environmentally friendly building…” Source: RevenueBase Database · checked Sep 18, 2026
16	DPSQ	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	4 contacts →
	Indirect evidence “Our collaboration brings together divergent skills and experience through design innovation.” Source: RevenueBase Database · checked Sep 18, 2026
17	Sata BIM	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	1-10	4 contacts →
	Partial evidence “SATA BIM is a company that deals with BIM and sustainable energy.” Source: RevenueBase Database · checked Sep 18, 2026
18	Hussey Architects	Strong evidence	Dublin 4, IrelandHQ checked Sep 18, 2026	1-10	3 contacts →
	Strong evidence “Our focus is on designing simple sustainable buildings that respect their context.” Source: RevenueBase Database · checked Sep 18, 2026
19	Paul Doherty Architects	Indirect evidence	Donegal Town, IrelandHQ checked Sep 18, 2026	1-10	3 contacts →
	Indirect evidence “Paul Doherty Architects (0749723131) are an RIAI registered Practice.” Source: RevenueBase Database · checked Sep 18, 2026
20	Geraghty Energy Consultants LTD	Indirect evidence	Dublin 7, IrelandHQ checked Sep 18, 2026	1-10	3 contacts →
	Indirect evidence “We at Geraghty Energy Consultants Ltd.” Source: RevenueBase Database · checked Sep 18, 2026
21	Passive House Plus	Strong evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
22	Energi IQ	Indirect evidence	Miltown Malbay, IrelandHQ checked Sep 18, 2026	1-10	2 contacts →
	Indirect evidence “Energi IQ was established in 2008.” Source: RevenueBase Database · checked Sep 18, 2026
23	A.M Rogers Associates	Indirect evidence	Ashbourne, IrelandHQ checked Sep 18, 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 18, 2026
24	HB Architects LTD	Indirect evidence	Sligo, IrelandHQ checked Sep 18, 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 18, 2026
25	Krüger Lyons	Partial evidence	Citywest, IrelandHQ checked Sep 18, 2026	1-10	2 contacts →
	Partial evidence “Krüger \| Lyons are a dynamic architectural firm with a passion for contemporary sustainable design.” Source: RevenueBase Database · checked Sep 18, 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: sustainable 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 sustainable building contractors.
Partial evidence: Its own public description names part of sustainable building contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable 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 47 sustainable building contractors based in Ireland

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Sustainable building contractors based in Ireland at a glance

As of Sep 18, 2026

51.4%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

23.4%Largest-city concentration · Dublin

Sep 18, 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 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 sustainable 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 “sustainable 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 sustainable 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 sustainable 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, 181 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 18, 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 sustainable 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 sustainable building contractors are there based in Ireland?

RevenueBase identified 47 sustainable 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?

Kilcawley Construction, headquartered in Sligo Connaught, tops this list with the largest team on record.

Which city has the most sustainable building contractors?

Dublin leads with 11 headquartered companies, followed by Cork (2) and Longford (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 181 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 18, 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.