| KM Electrical Contractor Ltd CRO 801930 · Ballina | Ballina | 17 Nov 2025 |
| RSD Construction Ltd CRO 790652 | — | 12 Jun 2025 |
| Dermot Mullin Locksmith Ltd CRO 778568 · Westport | Westport | 2 Jan 2025 |
| McNeela Windows & Doors Ltd CRO 778127 · Swinford | Swinford | 18 Dec 2024 |
| Earth Science Partnership (Ireland) Ltd CRO 766742 · Westport | Westport | 26 Jun 2024 |
| Peter Burke Electrical Ltd CRO 755988 · Westport | Westport | 18 Jan 2024 |
| Golden Sheds Ltd CRO 753784 · Swinford | Swinford | 12 Dec 2023 |
| Macaulay Consulting Services Ltd CRO 750606 · Castlebar | Castlebar | 17 Oct 2023 |
| West Therm Construction Contractors Ltd CRO 749694 · Ballina | Ballina | 3 Oct 2023 |
| Proconstruct Ltd CRO 735157 · Ballina | Ballina | 16 Feb 2023 |
| Airsol Renewable Solutions Ltd CRO 732308 · Newport | Newport | 21 Dec 2022 |
| Renoclean Ltd CRO 727430 · Ballina | Ballina | 11 Oct 2022 |
| Mfa Consulting Engineers Ltd CRO 726539 · Ballina | Ballina | 26 Sep 2022 |
| Quay Carpentry & Construction Ltd CRO 725389 · Ballina | Ballina | 6 Sep 2022 |
| Dermot Moyles Construction Ltd CRO 717005 · Ballina | Ballina | 7 Apr 2022 |
| Donoghue and O'Neill Electrical Ltd CRO 715386 · Belmullet | Belmullet | 15 Mar 2022 |
| Westquay Energy Ltd CRO 714246 · Westport | Westport | 21 Feb 2022 |
| Gdi Ventures Ltd CRO 710508 · Ballina | Ballina | 21 Dec 2021 |
| Modern Rooflights Ireland Ltd CRO 708669 · Kiltimagh | Kiltimagh | 23 Nov 2021 |
| Barry Ryan Concrete Works Ltd CRO 708220 · Shrule | Shrule | 18 Nov 2021 |
| Bunnacurry Facilities Management Ltd CRO 704917 · Achill Island | Achill Island | 30 Sep 2021 |
| Cordial Construction Consulting (CCC) Ltd CRO 699899 · Kiltimagh | Kiltimagh | 9 Jul 2021 |
| QPM Ventures Ltd CRO 693600 · Claremorris | Claremorris | 23 Apr 2021 |
| Murphy's Roll-R-Doors Ltd CRO 688531 · Ballina | Ballina | 23 Feb 2021 |
| Groundworks Civils and Structural Contracting Ltd CRO 687679 | — | 11 Feb 2021 |
| DMC Mechanical & Construction Ltd CRO 677439 · Foxford | Foxford | 8 Sep 2020 |
| Bertech Innovation Ltd CRO 669707 · Killala | Killala | 17 Apr 2020 |
| Mhi Michael Holohan Industries Ltd CRO 667977 | — | 6 Mar 2020 |
| Hopkins Electrical Ltd CRO 664742 · Castlebar | Castlebar | 22 Jan 2020 |
| Loftus Guttering Services Ltd CRO 658384 · Swinford | Swinford | 7 Oct 2019 |
| Westbuild Ltd CRO 644350 · Westport | Westport | 25 Feb 2019 |
| DC Nevin and Sons Ltd CRO 630264 · Hollymount | Hollymount | 13 Jul 2018 |
| E.J. Deacy Contractors Ltd CRO 626778 · Cong | Cong | 16 May 2018 |
| Macalla Farm Ltd CRO 622755 · Westport | Westport | 15 Mar 2018 |
| Mayo Electrical Ltd CRO 621903 · Castlebar | Castlebar | 26 Feb 2018 |
| Powerbetter Developments (IRL) Ltd CRO 616614 · Killala | Killala | 5 Dec 2017 |
| Cawley Quality Drylining Ltd CRO 616439 · Charlestown | Charlestown | 4 Dec 2017 |
| Walsh Steel Detailing Ltd CRO 613780 · Ballina | Ballina | 20 Oct 2017 |
| Brian Forkan Carpentry & Construction Ltd CRO 604087 | — | 11 May 2017 |
| Dixon & Dever PM Ltd CRO 593906 · Claremorris | Claremorris | 1 Dec 2016 |
| Stanta Developments UC CRO 592640 · Charlestown | Charlestown | 9 Nov 2016 |
| Masterson Design Ltd CRO 579425 · Castlebar | Castlebar | 23 Mar 2016 |
| Western Asphalt Construction Ltd CRO 564290 | — | 3 Jul 2015 |
| McGrath Gas & Oil Services Ltd CRO 554107 · Westport | Westport | 10 Dec 2014 |
| LG Glass & Glazing Ltd CRO 499847 · Castlebar | Castlebar | 10 Jun 2011 |
| Churchfield Home Services Ltd CRO 499398 · Crossmolina | Crossmolina | 30 May 2011 |
| Holmes Insulation Ltd CRO 478269 · Ballina | Ballina | 3 Dec 2009 |
| KD Mechanical Engineers Ltd CRO 470296 · Castlebar | Castlebar | 29 Apr 2009 |
| Caden Refrigeration Ltd CRO 455194 · Crossmolina | Crossmolina | 28 Mar 2008 |
| Damien Ryan (Contracts) Ltd CRO 422968 · Cross | Cross | 30 Jun 2006 |
