Company lists · Data refreshed November 2026

Top 25 Building systems engineering companies based in Ireland

RevenueBase identified 206 company matches for building systems engineering companies associated with Ireland as of November 2026 and tracks 7,707 professional contacts across them, including 3,157 with verified work emails. Dublin is the largest hub.

This list covers company matches for building systems engineering companies associated with Ireland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
206Companies
7,707Contacts tracked
3,157Verified emails
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The 25 largest building systems engineering companies based in Ireland

Ranked by team size
Top 25 of 206 company matches for building systems engineering companies based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDublin 4, IrelandHQ recorded Nov 6, 20261,001-5,0002,643 contacts →

Exact match

“Jones Engineering is a multi-disciplined engineering contracting company, offering the complete range of engineering and building services installations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchDublin, IrelandHQ recorded Nov 6, 202651-200299 contacts →

Exact match

“Since 1991, ORS has led the way in anticipating and responding to diverse client requirements in the construction industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDublin 22, IrelandHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBlackrock, IrelandHQ recorded Nov 6, 202651-200171 contacts →

Exact match

“MWP is a multi-disciplinary Engineering and Environmental Consulting Practice providing a first class service to its clients since it was founded in 1967.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDublin, IrelandHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDublin, IrelandHQ recorded Nov 6, 202651-20098 contacts →

Exact match

“ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAthlone, IrelandHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“ROSS delivers specialist engineering & construction services with a focus on high-tech facilities, pharmaceutical projects, and housing developments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDublin 12, IrelandHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“Quinn Downes Mechanical Services Ltd was founded in by our Directors Pat Quinn and Derek Downes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchTallaght, IrelandHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“Mastertech Group is a leading provider of integrated building services, engineering solutions, and sustainable maintenance support across Ireland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchKilkenny, IrelandHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“Prochem Engineering is one of the leading engineering consultancy firms in Ireland, having been established in 1995.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDublin, IrelandHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“Burlington Engineering Limited is a building services engineering provider with a long established reputation as one of the leading companies operating in its field.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBlackrock, IrelandHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDublin, IrelandHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“Since 2004, DMG Engineering has delivered Mechanical, Electrical, Air Conditioning and Maintenance contracting to commercial, industrial, pharmaceutical and healthcare clients…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDundrum, IrelandHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBray, IrelandHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Reshaping the way you think about building performance since 2007.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLoughrea, IrelandHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“Dominic O'Connor Ltd are a progressive mechanical building services contractor based in the Loughrea, Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchDublin 10, IrelandHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Lynskey Engineering Limited provide a wide scope of Mechanical Building Services covering commercial, industrial, process and mixed use developments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDublin 2, IrelandHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“McElroy Associates carry out work in the Design, Project Management and Construction Supervision of building projects for international and Irish clients, primarily in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchIrelandHQ recorded Nov 6, 2026201-50049 contacts →

Exact match

“Tim Kelly Group, founded in 1974, is one of Ireland’s leading mechanical and electrical contractors offering mechanical, electrical, fire protection and technology solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDublin, IrelandHQ recorded Nov 6, 2026n/a49 contacts →

Exact match

“SSA Architects originated in 1974 when the practice was formed by John F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchDublin, IrelandHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Axiseng Consulting Engineers is a premier independent building services consulting engineering practice, founded in 2004 and celebrating 20 years of excellence in delivering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBlackrock, IrelandHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchDublin, IrelandHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“JCPS Mechanical Ltd was established in 2007 by Managing Director John Corr and quickly expanded to become on of Ireland's leading Mechanical Contractors specialising in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLittle Island, IrelandHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Foltech executes complex engineering, procurement, construction, and maintenance projects for commercial clients around the country.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMallow Road, IrelandHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Senior engineers located in the following areas: Cork - Dublin - Belfast - Galway - Mayo - Donegal - Roscommon - Longford - Kerry - Laois - Limerick Sygma Automation specialises…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 206 building systems engineering companies based in Ireland

See the full list, filter by size, metro and specialty, and access 3,157 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building systems engineering companies based in Ireland at a glance

As of Nov 6, 2026
41.0%Verified-email coverage
37.4Average contacts per company
11-50Median size (employees)
21.8%Largest-city concentration · Dublin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
81
11-50
81
51-200
33
201-500
5
1,001-5,000
2

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 206 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Ireland whose business descriptions match “building systems engineering companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,157 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Building systems engineering companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “building systems engineering companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building systems engineering companies are there based in Ireland?

RevenueBase identified 206 company matches for building systems engineering companies associated with Ireland as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Jones Engineering tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most building systems engineering companies?

Dublin leads with 45 company records, followed by Cork (8) and Limerick (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,157 professional contacts with verified work emails tracked across these 206 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.