Top construction firms in Ireland
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Balfour Beatty Group LIMITED | Ireland | Dublin | 29 Earlsfort Terrace | Dublin | D02 | N/A | 1909 | $4,769,186,930 | 15,774 | Foreign company | 461 | 905055 |
| 2 | Nishimatsu Construction CO LIMITED | Ireland | Whitehall | Dublin Port Tunnel Office | Dublin | N/A | N/A | 1937 | $3,145,843,200 | 400 | Foreign company | 88 | 904498 |
| 3 | Greencore Holdings (ireland) LIMITED | Ireland | Dublin | 4th Floor Two the Green | Dublin | K67 E2H3 | N/A | 1993 | $1,760,486,909 | 11,741 | Corporation | 16 | 208818 |
| 4 | Eirgrid Public LIMITED Company | Ireland | Dublin | Legal Department | Dublin | D04 FW28 | eirgrid.***** | 2001 | $1,235,036,740 | 610 | Corporation | 7 | 338522 |
| 5 | Winthrop Technologies LIMITED | Ireland | Dublin | Unit 7 Turnpike Business Park | Dublin | D22 CD74 | winthrop.***** | 2000 | $1,168,734,576 | 692 | Corporation | 24 | 322865 |
| 6 | Glenveagh Homes LIMITED | Ireland | Naas | Block C Maynooth Business Campus | Kildare | N/A | glenveagh.***** | 2003 | $789,632,764 | 119 | Corporation | 20 | 368093 |
| 7 | Dornan Engineering LIMITED | Ireland | Cork | 10 Eastgate Avenue | Cork | T45 PC63 | dornan.***** | 1994 | $775,882,991 | 1,153 | Corporation | 19 | 212757 |
| 8 | John Paul Construction LIMITED | Ireland | Dublin | 3 Arkle Road | Dublin | D18 C9C5 | johnpaul.***** | 1949 | $676,525,938 | 508 | Corporation | 9 | 361432 |
| 9 | Walls Construction LIMITED | Ireland | Dublin | Rosemount House | Dublin | D14 P924 | walls.***** | 1950 | $667,478,511 | 478 | Corporation | 4 | 13243 |
| 10 | Michael Mcnamara & Company Unlimited Company | Ireland | Dublin | Rsm Farrell Grant Sparks Molyneux House | Dublin | D08C8CN | N/A | 1940 | $666,372,377 | 424 | Corporation | 3 | 21916 |
| 11 | Collen Construction LIMITED | Ireland | Dublin | Riverhouse | Dublin | D03 | collen.***** | 1984 | $561,481,608 | 345 | Corporation | 11 | 100646 |
| 12 | Chadwicks Group LIMITED | Ireland | Dublin | Ashfield | Dublin | D22 W318 | chadwicksgroup.***** | 1909 | $528,901,008 | 1,888 | Corporation | 442 | 3510 |
| 13 | Benedict Real Estate Bidco LIMITED | Ireland | Dublin | 10 Earlsfort Terrace | Dublin | D02 T380 | N/A | 2022 | $484,743,272 | 4 | Corporation | 37 | 715263 |
| 14 | Ward & Burke Construction LIMITED | Ireland | Kilcolgan | Stradbally East | Galway | H91 W279 | wardandburke.***** | 2001 | $479,450,888 | 886 | Corporation | 11 | 336958 |
| 15 | Kirby Group Engineering Unlimited Company | Ireland | Dublin | White Swan Business Park | Dublin | D08 VX59 | kirbygroup.***** | 1964 | $455,768,983 | 1,158 | Corporation | 14 | 41839 |
| 16 | Bam Contractors LIMITED | Ireland | Kill | Hartwell Lower | Galway | W91 KH3E | N/A | 1993 | $448,149,683 | 701 | Corporation | 353 | 199002 |
| 17 | Suir Engineering LIMITED | Ireland | Waterford | Unit 9a Cleaboy Business Park | Waterford | X91 PX92 | imtechsuir.***** | 1984 | $423,549,704 | 1,297 | Corporation | 21 | 100425 |
| 18 | Netgear International LIMITED | Ireland | Cork | 6th Floor, Penrose Two | Cork | T23 YY09 | netgear.***** | 2005 | $409,990,000 | 52 | Corporation | 35 | 409506 |
| 19 | Aramark Ireland Holdings LIMITED | Ireland | Dublin | Newenham House | Dublin | D17 AY61 | aramark.***** | 2000 | $401,772,890 | 7,190 | Corporation | 2454 | 324452 |
| 20 | J.J. Rhatigan & Company Unlimited Company | Ireland | Galway | Wolfe Tone House | Galway | H91 PW72 | jjrhatigan.***** | 1952 | $392,613,992 | 365 | Corporation | 6 | 133463 |
| 21 | P. Elliott & Company LIMITED | Ireland | Dublin | Block D, Iveagh Court, Harcourt Road | Dublin | D02 VH94 | elliottgroup.***** | 1942 | $355,550,658 | 340 | Corporation | 2 | 55644 |
| 22 | Enet Communications LIMITED | Ireland | Dublin | Block C Dundrum Business Park | Dublin | D14 E1R9 | culturaltourismireland.***** | 1989 | $299,069,352 | 410 | Corporation | 48 | 141524 |
| 23 | Bennett (construction) LIMITED | Ireland | Mullingar | Forest Park | West Meath | N91 E1WD | bennettconstruction.***** | 1996 | $295,657,857 | 129 | Corporation | 41 | 253920 |
| 24 | Pierse Developments (cork) | Ireland | Dublin 15 | Birmayne House | Dublin | D15A078 | N/A | 1996 | $285,686,496 | 734 | Corporation | N/A | 245189 |
| 25 | Designer Group Engineering Contractors LIMITED | Ireland | Dublin 15 | Clyde House,ida Blanchardstown Business & Technology Park | Dublin | D15 Y6NT | designergrp.***** | 1992 | $273,998,838 | 495 | Corporation | 11 | 196956 |
Showing 25 of 41,166 companies
Request Free SampleConstruction firms in Ireland by region
41.166 construction firms across 56 Irish counties. The table below shows the share each region holds.
Construction firms in Ireland by employee size
| Bracket | Companies | Share |
|---|---|---|
| 1-4 | 30.389 | |
| 5-9 | 6.210 | |
| 10-19 | 2.628 | |
| 20-49 | 1.092 | |
| 0 or Unknown | 380 | |
| 50-99 | 297 | |
| 100-199 | 105 | |
| 200-499 | 48 | |
| 500-999 | 9 | |
| 1.000-4.999 | 6 | |
| 10.000+ | 2 |
Construction firms in Ireland by revenue
| Bracket | Companies | Share |
|---|---|---|
| 1 to 100.000 | 22.369 | |
| 100.001 to 499.999 | 15.788 | |
| 500.000 to 999.999 | 1.442 | |
| 1.000.000 to 4.999.999 | 893 | |
| 10.000.000 to 49.999.999 | 388 | |
| 5.000.000 to 9.999.999 | 82 | |
| 0 or Unknown | 75 | |
| 100.000.000 to 499.999.999 | 59 | |
| 50.000.000 to 99.999.999 | 58 | |
| 500.000.000 to 999.999.999 | 7 | |
| 1.000.000.000 or more | 5 |
NACE Rev 2, NACE and industry classification for Irish construction firms
Irish construction firms are classified under NACE Rev 2 section F (Construction). Ireland's NACE Rev 2 classification mirrors NACE Rev 2 at the 4-digit level, so the codes match exactly. The list above covers every active business in this category registered with the Companies Registration Office (CRO) (Irish Business Register).
Closely related business services
Frequently asked questions about construction firms in Ireland
Our list tracks 41.166 active construction firms across every Irish provincie, sourced from the Irish Companies Registration Office (CRO) (commercial register) and verified monthly. The exact count changes as firms register, dissolve and merge.
The region with the most construction firms is Dublin, followed by the other major economic regions. The full regional breakdown above shows the share each Irish provincie holds.
Irish construction firms are classified under NACE Rev 2 section F (Construction), which mirrors Ireland's national NACE Rev 2 codes. The list above covers every active Irish company in this category. Ireland's NACE Rev 2 classification is a 1:1 NACE Rev 2 implementation at the 4-digit level, so the codes match exactly.
Yes. Apply your filters (region, size, revenue, etc.) on the platform, preview the result, then export the full filtered list as CSV or Excel. Larger exports are delivered by email link. Request a free sample first if you want to evaluate the data before you buy.
Every record includes the firm name, full address, primary phone, business email (where available), website, organisasjonsnummer (org. nr.), VAT registration, employee size, revenue band, founding year and NACE / NACE Rev 2 classification. Records are sourced from the Companies Registration Office (CRO) (commercial register) and re-verified monthly.
Monthly. Each refresh removes firms that have dissolved and adds new registrations from the latest Companies Registration Office (CRO) feeds. The "Last updated" line at the top of this page shows the most recent refresh date.
56 Irish counties have at least one active construction firm in our list. The region with the most construction firms is Dublin, followed by the other major economic regions. Use the regional breakdown table above to see the full distribution.
