Company lists · Data refreshed September 2026

Top 23 Architecture companies based in Ireland

Name: Architecture companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 632 companies tracked

This directory lists 632 architecture companies based in Ireland, with 7,853 contacts and 4,189 email addresses. As of September 2026, Dublin is the single most-represented city among the companies on the list.

Architecture companies design buildings and other structures, develop plans and specifications, and advise clients on construction, renovation, and project delivery. This list covers companies that provide architectural design, planning, documentation, or related building design services. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

632Companies

7,853Contacts tracked

4,189Verified emails

461Mobile numbers

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The 23 largest architecture companies based in Ireland

Ranked by team size

Top 23 of 632 architecture companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to architecture companies: 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	ORS	Indirect evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	270 contacts →
	Indirect evidence “Since 1991, ORS has led the way in anticipating and responding to diverse client requirements in the construction industry.” Source: RevenueBase Database · checked Sep 6, 2026
2	Henry J Lyons Architects	Strong evidence	Dublin 2, IrelandHQ checked Sep 6, 2026	201-500	250 contacts →
	Strong evidence “Henry J Lyons Architects is an Irish architectural practice based in Dublin City Centre.” Source: RevenueBase Database · checked Sep 6, 2026
3	Elliott Group	Indirect evidence	Cavan, IrelandHQ checked Sep 6, 2026	201-500	239 contacts →
	Indirect evidence “Construction has always been a pivotal part of the Elliott family.” Source: RevenueBase Database · checked Sep 6, 2026
4	Scott Tallon Walker Architects	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	111 contacts →
	Strong evidence “Scott Tallon Walker is a leading architectural practice that creates timeless, innovative and well-crafted buildings that enhance wellbeing, the public realm and the environment.” Source: RevenueBase Database · checked Sep 6, 2026
5	MCA Architects	Indirect evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	72 contacts →
	Indirect evidence “MCA Architects and TTSP HWP have joined forces to form a fully integrated, pan-European leader in data centre design, engineering, and project delivery.” Source: RevenueBase Database · checked Sep 6, 2026
6	Coady Architects	Indirect evidence	Dublin 6, IrelandHQ checked Sep 6, 2026	51-200	64 contacts →
	Indirect evidence “Designing with Purpose: Shaping the Future of Living, Learning, Working, and Wellbeing.” Source: RevenueBase Database · checked Sep 6, 2026
7	Royal Institute Of The Architects Of Ireland Riai	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	11-50	62 contacts →
	Strong evidence “The RIAI engages with government, the professions, industry, clients and the public to promote quality in architecture; to deliver quality and sustainability in the built…” Source: RevenueBase Database · checked Sep 6, 2026
8	Mola Architecture	Strong evidence	Donnybrook, IrelandHQ checked Sep 6, 2026	51-200	60 contacts →
	Strong evidence “Introduction MOLA Architecture provides services in Architecture, Urban Design and Interior Architecture.” Source: RevenueBase Database · checked Sep 6, 2026
9	3d Design Bureau	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	11-50	46 contacts →
	Strong evidence “We are an international architectural visualisation studio and daylight and sunlight consultancy, founded in and based in Ireland.” Source: RevenueBase Database · checked Sep 6, 2026
10	Mcelroy Associates	Indirect evidence	Dublin 2, IrelandHQ checked Sep 6, 2026	11-50	45 contacts →
	Indirect evidence “McElroy Associates carry out work in the Design, Project Management and Construction Supervision of building projects for international and Irish clients, primarily in the…” Source: RevenueBase Database · checked Sep 6, 2026
11	Mccauley Daye O'connell Architects	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	11-50	45 contacts →
	Strong evidence “With invaluable architectural experience spanning over a range of sectors including commercial, offices, residential, leisure and retail we can confidently offer a large selection…” Source: RevenueBase Database · checked Sep 6, 2026
12	SSA Architects	Indirect evidence	Dublin, IrelandHQ checked Sep 6, 2026	n/a	45 contacts →
	Indirect evidence “SSA Architects originated in 1974 when the practice was formed by John F.” Source: RevenueBase Database · checked Sep 6, 2026
13	O'connell Mahon Architects	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	40 contacts →
	Strong evidence “O’Connell Mahon Architects is an architectural practice providing specialist consultancy and full architectural services in the Healthcare Sector.” Source: RevenueBase Database · checked Sep 6, 2026
14	TOT Architects	Strong evidence	Dublin 2, IrelandHQ checked Sep 6, 2026	11-50	40 contacts →
	Strong evidence “TOT Architects is one of the most dynamic architectural practices in the country.” Source: RevenueBase Database · checked Sep 6, 2026
15	Eireng Consulting Engineers LTD	Indirect evidence	Blackrock, IrelandHQ checked Sep 6, 2026	11-50	38 contacts →
	Indirect evidence “EirEng Consulting Engineers is a firm of highly experienced and motivated Civil and Structural Design Engineers with offices in Ireland and the UK, dedicated to providing cutting…” Source: RevenueBase Database · checked Sep 6, 2026
16	MJF Interiors	Indirect evidence	Dublin City, IrelandHQ checked Sep 6, 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 6, 2026
17	Altu Architects	Strong evidence	Dublin City, IrelandHQ checked Sep 6, 2026	11-50	35 contacts →
	Strong evidence “ALTU Architects are a design-led architectural practice delivering a diverse range of dynamic, forward thinking projects in close collaboration with our clients.” Source: RevenueBase Database · checked Sep 6, 2026
18	O'neill O'malley Architecture	Strong evidence	Galway, IrelandHQ checked Sep 6, 2026	51-200	34 contacts →
	Strong evidence “O’Neill O’Malley Architecture is a full-service, commercial architecture, and project management practice with offices in Galway, Westport, Shannon & Limerick.” Source: RevenueBase Database · checked Sep 6, 2026
19	Urban Agency	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	51-200	32 contacts →
	Strong evidence “URBAN AGENCY is an award-winning architecture firm with a broad international profile.” Source: RevenueBase Database · checked Sep 6, 2026
20	Fewer Harrington & Partners	Indirect evidence	Waterford, IrelandHQ checked Sep 6, 2026	11-50	32 contacts →
	Indirect evidence “Fewer Harrington & Partners (FHP) was formed in 1975 by Nicky Fewer.” Source: RevenueBase Database · checked Sep 6, 2026
21	JFA	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	11-50	32 contacts →
	Strong evidence “JFA is a leading commercial architectural practice with our main office base in Clonskeagh, Dublin 14 and a satellite office in Maynooth, Co Kildare.” Source: RevenueBase Database · checked Sep 6, 2026
22	C W O'brien Architects	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	11-50	32 contacts →
	Strong evidence “Residential \| Data Centres \| Hospitality At C+W O'Brien Architects, we combine architectural innovation with a commitment to creating places that enhance communities.” Source: RevenueBase Database · checked Sep 6, 2026
23	CDP Architecture	Strong evidence	Dublin, IrelandHQ checked Sep 6, 2026	11-50	31 contacts →
	Strong evidence “We provide professional architectural services and support to our clients.” Source: RevenueBase Database · checked Sep 6, 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: architecture companies. 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 architecture companies.
Partial evidence: Its own public description names part of architecture companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architecture companies. 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 23 of 632 architecture companies based in Ireland

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Architecture companies based in Ireland at a glance

As of Sep 6, 2026

53.3%Verified-email coverage

5.9%Mobile-number coverage

12.4Average contacts per company

1-10Median size (employees)

23.9%Largest-city concentration · Dublin

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

415

11-50

185

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

3,9390–30

24231–60

261–90

090–180

6180+

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 architecture companies, 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 “architecture companies”. 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 architecture companies), 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 architecture companies, 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, 4,189 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 6, 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.

Architecture companies by metro

Architecture companies in Dublin151

Frequently asked

How many architecture companies are based in Ireland?

RevenueBase counts 632 architecture companies listed based in Ireland. The directory also includes 7,853 contacts and 4,189 email addresses.

Which city has the most architecture companies in the list?

Dublin is the single most-represented city among the architecture companies on the list.

Where can I find contacts at architecture companies?

This directory includes 7,853 contacts and 4,189 email addresses for architecture companies based in Ireland.

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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.