Company lists · Data refreshed September 2026

Top 23 Design consultancies based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 1,136 companies tracked

RevenueBase identified 1,136 design consultancies headquartered in Ireland as of September 2026 and tracks 10,740 professional contacts across them, including 5,453 with verified work emails and 588 with mobile numbers. Dublin is the largest hub.

This list covers design consultancies 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 24, 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 24, 2026 86% judged on-target in blind review

1,136Companies

10,740Contacts tracked

5,453Verified emails

588Mobile numbers

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The 23 largest design consultancies based in Ireland

Ranked by team size

Top 23 of 1,136 design consultancies based in Ireland, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to design consultancies: 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	Nicholas O'dwyer LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	201-500	284 contacts →
	Indirect evidence “Nicholas O'Dwyer Ltd, Consulting Engineers, provide water engineering, environmental engineering and civil and structural engineering services to public and private sector clients.” Source: RevenueBase Database · checked Sep 24, 2026
2	Henry J Lyons Architects	Indirect evidence	Dublin 2, IrelandHQ checked Sep 24, 2026	201-500	250 contacts →
	Indirect evidence “Henry J Lyons Architects is an Irish architectural practice based in Dublin City Centre.” Source: RevenueBase Database · checked Sep 24, 2026
3	O'connor Sutton Cronin	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	201-500	241 contacts →
	Indirect evidence “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: RevenueBase Database · checked Sep 24, 2026
4	Dbfl Consulting Engineers LTD	Partial evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	178 contacts →
	Partial evidence “DBFL is a fully Irish-owned firm specializing in the planning, engineering design and delivery within the property, infrastructure, environmental & energy sectors.” Source: RevenueBase Database · checked Sep 24, 2026
5	KSN	Indirect evidence	Dublin 4, IrelandHQ checked Sep 24, 2026	51-200	165 contacts →
	Indirect evidence “KSN is an independent Irish owned construction consultancy founded over 35 years ago.” Source: RevenueBase Database · checked Sep 24, 2026
6	MWP	Indirect evidence	Blackrock, IrelandHQ checked Sep 24, 2026	51-200	160 contacts →
	Indirect evidence “MWP is a multi-disciplinary Engineering and Environmental Consulting Practice providing a first class service to its clients since it was founded in 1967.” Source: RevenueBase Database · checked Sep 24, 2026
7	KSNPM	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	118 contacts →
	Indirect evidence “KSNPM is a trusted, multi-disciplinary, project management led building consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
8	Punch Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Sep 24, 2026	51-200	105 contacts →
	Partial evidence “PUNCH Consulting Engineers is the business name of Michael Punch and Partners Limited and is one of Ireland's leading + most experienced engineering consultancies.” Source: RevenueBase Database · checked Sep 24, 2026
9	In2 Engineering	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	100 contacts →
	Indirect 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 24, 2026
10	Waterman Moylan Consulting Engineers	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	99 contacts →
	Indirect evidence “Waterman Moylan is a leading engineering and environmental consultancy providing specialist services to our clients in the property, infrastructure and environment markets in…” Source: RevenueBase Database · checked Sep 24, 2026
11	Dolmen	Partial evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	91 contacts →
	Partial evidence “We are a creative design and innovation consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
12	Allied Ireland	Indirect evidence	Uk And Roi, IrelandHQ checked Sep 24, 2026	11-50	89 contacts →
	Indirect evidence “Allied are far more than suppliers of product.” Source: RevenueBase Database · checked Sep 24, 2026
13	Barrett Mahony Consulting Engineers	Indirect evidence	Dublin 2, IrelandHQ checked Sep 24, 2026	51-200	79 contacts →
	Indirect evidence “Barrett Mahony Consulting Engineers is an established civil and structural engineering consultancy specialising in all aspects of civil and structural engineering and project…” Source: RevenueBase Database · checked Sep 24, 2026
14	Mitchell Mcdermott	Indirect evidence	Dublin 4, IrelandHQ checked Sep 24, 2026	51-200	77 contacts →
	Indirect evidence “Mitchell McDermott is an independent firm of Construction Consultants founded by Paul Mitchell and Anthony McDermott in 2015.” Source: RevenueBase Database · checked Sep 24, 2026
15	Prochem Engineering	Indirect evidence	Kilkenny, IrelandHQ checked Sep 24, 2026	51-200	75 contacts →
	Indirect evidence “Prochem Engineering is one of the leading engineering consultancy firms in Ireland, having been established in 1995.” Source: RevenueBase Database · checked Sep 24, 2026
16	AWN Consulting LTD	Partial evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	74 contacts →
	Partial evidence “AWN Consulting is a multidisciplinary consultancy offering specialist design advice in respect of a wide range of engineering and environmental disciplines.” Source: RevenueBase Database · checked Sep 24, 2026
17	MCA Architects	Partial evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	72 contacts →
	Partial 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 24, 2026
18	Tandem Project Management LTD	Partial evidence	Blackrock, IrelandHQ checked Sep 24, 2026	51-200	65 contacts →
	Partial evidence “Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Source: RevenueBase Database · checked Sep 24, 2026
19	Mola Architecture	Partial evidence	Donnybrook, IrelandHQ checked Sep 24, 2026	51-200	60 contacts →
	Partial evidence “Introduction MOLA Architecture provides services in Architecture, Urban Design and Interior Architecture.” Source: RevenueBase Database · checked Sep 24, 2026
20	Publicis Dublin	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	55 contacts →
	Indirect evidence “Publicis Dublin is a unique creative consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
21	Varming Consulting Engineers LTD	Partial evidence	Dundrum, IrelandHQ checked Sep 24, 2026	11-50	55 contacts →
	Partial evidence “At Varming, we’re all about cutting-edge design and meticulous oversight of mechanical and electrical services, whether it’s for brand-new constructions or revitalizing existing…” Source: RevenueBase Database · checked Sep 24, 2026
22	CS Consulting Group Civil & Structural Engineers	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	54 contacts →
	Indirect evidence “Realising visions, delivering solutions: CS Consulting Group is a team of highly qualified civil and structural engineers and technicians offering responsive, innovative…” Source: RevenueBase Database · checked Sep 24, 2026
23	Rogerson Reddan	Indirect evidence	Dublin 4, IrelandHQ checked Sep 24, 2026	11-50	53 contacts →
	Indirect evidence “Rogerson Reddan (RR) is a multi-disciplinary consultancy practice serving the Construction Industry.” Source: RevenueBase Database · checked Sep 24, 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: design consultancies. 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 design consultancies.
Partial evidence: Its own public description names part of design consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name design consultancies. 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 1,136 design consultancies based in Ireland

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Design consultancies based in Ireland at a glance

As of Sep 24, 2026

50.8%Verified-email coverage

5.5%Mobile-number coverage

9.5Average contacts per company

1-10Median size (employees)

29.0%Largest-city concentration · Dublin

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

894

11-50

194

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

4,2320–30

1,15331–60

5561–90

190–180

12180+

Company record updated

Median 76.0d

00–30

3,02031–60

4,57261–90

2,54990–180

599180+

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 design consultancies, 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 “design consultancies”. 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 design consultancies), 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 design consultancies, 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, 5,453 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 24, 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.

Design consultancies by metro

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 design consultancies, 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 design consultancies are there based in Ireland?

RevenueBase identified 1,136 design consultancies 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?

Nicholas O'dwyer LTD, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most design consultancies?

Dublin leads with 330 headquartered companies, followed by Cork (51) and Limerick (28).

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 5,453 verified decision-maker contacts tracked across these 1,136 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 24, 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.