Company lists · Data refreshed September 2026

Top 25 Sustainable design agencies based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 99 companies tracked

RevenueBase identified 99 sustainable design agencies headquartered in Ireland as of September 2026 and tracks 620 professional contacts across them, including 279 with verified work emails. Dublin is the largest hub.

This list covers sustainable design agencies 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 22, 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 22, 2026 86% judged on-target in blind review

99Companies

620Contacts tracked

279Verified emails

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The 25 largest sustainable design agencies based in Ireland

Ranked by team size

Top 25 of 99 sustainable design agencies based in Ireland, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable design agencies: 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	TOT Architects	Indirect evidence	Dublin 2, IrelandHQ checked Sep 22, 2026	11-50	40 contacts →
	Indirect evidence “TOT Architects is one of the most dynamic architectural practices in the country.” Source: RevenueBase Database · checked Sep 22, 2026
2	MJF Interiors	Partial evidence	Dublin City, IrelandHQ checked Sep 22, 2026	11-50	38 contacts →
	Partial 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 22, 2026
3	Fewer Harrington & Partners	Indirect evidence	Waterford, IrelandHQ checked Sep 22, 2026	11-50	32 contacts →
	Indirect evidence “Fewer Harrington & Partners (FHP) was formed in 1975 by Nicky Fewer.” Source: RevenueBase Database · checked Sep 22, 2026
4	Piquant	Indirect evidence	Limerick City, IrelandHQ checked Sep 22, 2026	11-50	29 contacts →
	Indirect evidence “Piquant is a full-service creative agency based in Limerick City.” Source: RevenueBase Database · checked Sep 22, 2026
5	VHA	Indirect evidence	Sligo, IrelandHQ checked Sep 22, 2026	11-50	25 contacts →
	Indirect evidence “Since the founding of VHA Architects in 1986 by Vincent Hannon, we have been privileged to form long-term relationships with many of the nation’s most distinguished developers…” Source: RevenueBase Database · checked Sep 22, 2026
6	Douglas Wallace Consultants	Partial evidence	Dublin 8, IrelandHQ checked Sep 22, 2026	11-50	25 contacts →
	Partial evidence “Douglas Wallace Consultants are brand environment architects and designers whose depth of experience, sector expertise and creativity has delivered some of the world’s leading…” Source: RevenueBase Database · checked Sep 22, 2026
7	RUA Architects	Partial evidence	Kinsale, IrelandHQ checked Sep 22, 2026	1-10	22 contacts →
	Partial evidence “GOOD DESIGN SHOULDN'T COST THE EARTH" Award winning RUA Architects have turned their focus to research and learning.” Source: RevenueBase Database · checked Sep 22, 2026
8	Burke-Kennedy Doyle Architects	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	51-200	21 contacts →
	Partial 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 22, 2026
9	Michael Fitzpatrick Architects	Indirect evidence	Cavan, IrelandHQ checked Sep 22, 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 22, 2026
10	FKP Architects	Indirect evidence	Dublin 2, IrelandHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “FKP Architects is a Dublin-based firm practicing Architecture and project management.” Source: RevenueBase Database · checked Sep 22, 2026
11	Passive Dynamics	Indirect evidence	Dublin, IrelandHQ checked Sep 22, 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 22, 2026
12	ABK Architects	Indirect evidence	Dublin, IrelandHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Over the past five decades, ABK Architects have consistently attracted critical acclaim and won numerous international awards for their work in the field of Architecture and…” Source: RevenueBase Database · checked Sep 22, 2026
13	Studio Saol	Strong evidence	Limerick, IrelandHQ checked Sep 22, 2026	11-50	12 contacts →
	Strong evidence “Designing for a sustainable future.” Source: RevenueBase Database · checked Sep 22, 2026
14	Greenhouse	Partial evidence	Cork, IrelandHQ checked Sep 22, 2026	11-50	12 contacts →
	Partial evidence “We are a stand-out strategic design agency: founded on passion, highly experienced in building successful brands and resolute believers in the power of collaboration.” Source: RevenueBase Database · checked Sep 22, 2026
15	Ceardean Architects LTD	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	12 contacts →
	Partial 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 22, 2026
16	Howley Hayes Cooney Architecture	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	11-50	11 contacts →
	Partial evidence “We are a design led practice working at the intersection of contemporary design and creative conservation.” Source: RevenueBase Database · checked Sep 22, 2026
17	Meehan Green, A KEO Company	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	11-50	11 contacts →
	Partial evidence “Meehan Green is a company based in Dublin, Ireland that provides sustainability and green building certifications consulting services.” Source: RevenueBase Database · checked Sep 22, 2026
18	Studio Duffy	Partial evidence	Monkstown, IrelandHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “Founded in Dublin in 1994 by DIT-trained architect John Duffy, Studio Duffy (formerly John Duffy Design Group – JDDG) has spent three decades designing environments across a wide…” Source: RevenueBase Database · checked Sep 22, 2026
19	Helena Mcelmeel Architects	Partial evidence	Galway, IrelandHQ checked Sep 22, 2026	1-10	9 contacts →
	Partial evidence “Architecture - Interiors - Low Energy / Passive Building - Public Realm / Urban Design” Source: RevenueBase Database · checked Sep 22, 2026
20	Detail	Strong evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	8 contacts →
	Strong evidence “Delivering clarity and confidence through the power of meaningful and sustainable brand strategy, brought to life with transformational design.” Source: RevenueBase Database · checked Sep 22, 2026
21	Ecohouse Developments Limited	Partial evidence	Dublin, IrelandHQ checked Sep 22, 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 22, 2026
22	Dublin Design Studio LTD	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	6 contacts →
	Partial evidence “Dublin Design Studio brings together a unique mix of creative disciplines.” Source: RevenueBase Database · checked Sep 22, 2026
23	DPSQ	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	11-50	4 contacts →
	Partial evidence “Our collaboration brings together divergent skills and experience through design innovation.” Source: RevenueBase Database · checked Sep 22, 2026
24	Wain Morehead Architects LTD	Indirect evidence	Cork, IrelandHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “WMA Ltd.” Source: RevenueBase Database · checked Sep 22, 2026
25	Ardagh Agencies	Strong evidence	IrelandHQ checked Sep 22, 2026	1-10	4 contacts →
	Strong evidence “Cutting edge sustainable solutions for the Irish and Northern Irish architectural and interior design community.” Source: RevenueBase Database · checked Sep 22, 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 design agencies. 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 design agencies.
Partial evidence: Its own public description names part of sustainable design agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable design agencies. 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 99 sustainable design agencies based in Ireland

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Sustainable design agencies based in Ireland at a glance

As of Sep 22, 2026

45.0%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

24.2%Largest-city concentration · Dublin

Sep 22, 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 99 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 design agencies, 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 design agencies”. 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 design agencies), 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 design agencies, 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, 279 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 22, 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 design agencies, 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 design agencies are there based in Ireland?

RevenueBase identified 99 sustainable design agencies 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?

TOT Architects, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most sustainable design agencies?

Dublin leads with 24 headquartered companies, followed by Cork (5) and Sligo (4).

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 279 verified decision-maker contacts tracked across these 99 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 22, 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.