| +AddJust | Computer Software |
| 137Th | Real Estate |
| 2Eva | Assessor |
| abgc Architects | Consultant Architect/Designer |
| Act-Studio | Consultant Architect/Designer |
| Aengus Consulting | Consultant |
| AH Ardale Construction Ltd | Real Estate |
| Airtight Building Systems | Contractor |
| Amplitude Acoustics | Consultant |
| Aramark Corporation | Facilities Manager |
| Arcologyint | Consultant Architect/Designer |
| Arup | Consultant Engineer |
| Autex Acoustics | Product Supplier |
| BAM Ireland | Contractor |
| BDP | Consultant Engineer |
| Bennett (Construction) Ltd | Contractor |
| Branach Developments | Contractor |
| Bucholz McEvoy Architects | Consultant Architect/Designer |
| Buildcert | Assessor |
| Burlington Eningeering | Consultant Engineer |
| Butler & Cammoranesi | Consultant Architect/Designer |
| caelanbristow.com | Consultant Architect/Designer |
| CAIRN HOMES PLC | Developer |
| Carroll Eco Systems | Product Supplier |
| Castlebrowne | Consultant Engineer |
| Catalyst Group | Consultant |
| Chadwicks Holdings Limited | Product Supplier |
| Chawner & Trench | Contractor |
| Clancon Build | Contractor |
| Clearstream Solutions | Consultant |
| Coady Architects | Consultant Architect/Designer |
| Collen Construction | Contractor |
| Colliers International | Real Estate |
| CORA Consulting Engineers | Consultant Engineer |
| Coresolutions | Consultant Engineer |
| Cosentino | Product Supplier |
| Costin Stefanescu Architects | Consultant Architect/Designer |
| Cundall | Consultant Engineer |
| D-RES | Developer |
| Davy Horizons | Consultant |
| DBFL | Consultant Engineer |
| Deaton Lysaght Architects | Consultant Architect/Designer |
| Dublin City Council | Public Authority |
| Dulux | Product Supplier |
| Dún Laoghaire-Rathdown County Council | Public Authority |
| Easlar | Consultant |
| Ecocel | Product Supplier |
| ecofusion.ie | Product Supplier |
| Ecological Building Systems | Product Supplier |
| Electric Ireland Superhomes | Energy Supplier |
| Elm Gray | Product Supplier |
| Embodied Carbon Reduction (ECR) | Consultant |
| Energlaze | Contractor |
| EnergyElephant | Computer Software |
| Engineers Ireland | Association |
| Ennis2040 | Public Authority |
| Envirobead | Contractor |
| Environmental Efficiency | Consultant |
| Ethos Engineering | Consultant Engineer |
| Fabrica Architects Ltd | Consultant Architect/Designer |
| Fine Grain Property | Real Estate |
| Fingal Planning Consultants | Contractor |
| Finsa | Product Supplier |
| Fliprecast | Product Supplier |
| Future Planet | Consultant |
| Gaia Ecotecture | Consultant Architect/Designer |
| Galetech Sustainable Living | Developer |
| gframe.ie | Product Supplier |
| Ggda | Public Authority |
| Gottstein Architects | Consultant Architect/Designer |
| greenwatt.ie | Contractor |
| Harcourt Architects | Consultant Architect/Designer |
| Hardware Association Ireland | Association |
| Hiberniareg | Developer |
| Hollis | Real Estate |
| Holmes Architecture | Consultant Architect/Designer |
| Horan Rainsford Architects | Consultant Architect/Designer |
| HOUSE2HOME | Contractor |
| Hpba | Academia R&D |
| Hydro | Product Supplier |
| iDDea | Consultant |
| IN 2 Engineering | Consultant Engineer |
| Indigo Real Estate Management | Real Estate |
| Interface Carpets | Product Supplier |
| IPUT | Developer |
| Irish Green Building Council | Association |
| Isabel Barros Architects | Consultant Architect/Designer |
| Jeremy Walsh PM | Contractor |
| John Paul Construction | Contractor |
| John Sisk & Son | Contractor |
| Jones Engineering Group | Consultant Engineer |
| Jones Lang LaSalle | Real Estate |
| Kingspan group | Product Supplier |
| KORE | Product Supplier |
| Kosmos | Consultant |
| KRA | Consultant Surveyor |
| KSN | Consultant |
| Ksnhorizon | Consultant |
| Lawler Consulting | Consultant Engineer |
| Lawler Sustainability | Consultant Engineer |
| Lioncor | Developer |
| Lumensearch | Consultant |
| Mannok | Product Supplier |
| Marlet | Developer |
| Martin Murray Architects | Consultant Architect/Designer |
| McCauley Daye O'Connell Architects | Consultant Architect/Designer |
| McKeon Group | Contractor |
| McLoughlin Architects | Consultant Architect/Designer |
| Meehan Green | Consultant |
| Mercury Engineering | Consultant Engineer |
| Metec Consulting Engineers | Consultant Engineer |
| MMC Eco Homes | Contractor |
| MMC Quantity Surveyors | Consultant Surveyor |
| MMP - Mulcahy McDonagh & Partners | Consultant Surveyor |
| Modex Ltd | Contractor |
| Mortar & More | Consultant Architect/Designer |
| Native Events | Consultant |
| NorDan Vinduer Ltd | Product Supplier |
| O'Neill - O'Malley Architecture | Consultant Architect/Designer |
| OCC Construction | Contractor |
| Optimal Sustainability Advisors | Building Owner |
| OSENG | Consultant Engineer |
| Parson Building Services Ltd. | Contractor |
| Partel | Product Supplier |
| Passivate | Consultant |
| Passive Dynamics | Consultant |
| Passive House Plus | Consultant Architect/Designer |
| Peter McVerry Trust | Developer |
| Philip Lee Solicitors | Legal Services |
| Philip T. Brady Architects | Consultant Architect/Designer |
| PJ Hegarty & Sons | Contractor |
| Retrokit | Computer Software |
| Reynaers Aluminium | Product Supplier |
| RIAI | Association |
| RKD | Consultant Architect/Designer |
| Robert Bourke Architects | Consultant Architect/Designer |
| Rodd Bond Architect | Consultant Architect/Designer |
| Rohan Holdings Ltd | Developer |
| Royal Society Of Ulster Architects | Association |
| Savills | Real Estate |
| Scott Tallon Walker Architects | Consultant Architect/Designer |
| Sheridan Woods | Consultant Architect/Designer |
| SMET | Product Supplier |
| Smith Demolition | Waste & Demolition |
| Sonas Bathrooms | Product Supplier |
| Soprema Ireland | Product Supplier |
| Staycity | Building Owner |
| Sustineo | Consultant |
| Symphony Energy | Computer Software |
| T U Dublin | Academia R&D |
| TFT | Real Estate |
| The Association of Consulting Engineers of Ireland | Association |
| Togatherhomes | Developer |
| Together Homes | Developer |
| Trident BC | Consultant Surveyor |
| Trinity College Dublin | Academia R&D |
| Truly Sustainable | Consultant Engineer |
| TUS | Academia R&D |
| Unilin Insulation Ireland Limited | Product Supplier |
| University College Dublin | Academia R&D |
| Urban Solutions | Developer |
| van Dijk Architects | Consultant Architect/Designer |
| Varming | Consultant Engineer |
| Wain Morehead Architects | Consultant Architect/Designer |
| Ward & Burke Construction | Contractor |
| Wdacoustics | Consultant |
| WWETB | Academia R&D |
| Zwai | Association |
