| 360 Wind Solutions Ltd | Builders | LL17 0JE | 2024 |
| 365 Wind Ltd | Builders | LL17 0JE | 2026 |
| A J Contractors (Nw) Ltd | Builders | LL17 0RN | 2025 |
| A.R Lifting Solutions Ltd | Builders | LL17 0TE | 2018 |
| Ajb Property Maintenance Ltd | Builders | LL18 4LW | 2024 |
| Alex Davies Construction Ltd | Builders | LL17 0BH | 1994 |
| Alltrades Commercial Property Services Ltd | Builders | LL18 2QD | 2017 |
| Andrew David Contracting Ltd | Builders | LL17 0JA | 2016 |
| Arch Contractors Ltd | Builders | LL17 0JA | 2023 |
| Arthur Hapgood Ltd | Builders | LL17 0JE | 1962 |
| Asg Property Development Ltd | Builders | LL17 0JA | 2014 |
| Astra Building & Electrical Ltd | Builders | LL17 0JA | 2012 |
| Atd Rendering & Property Maintenance Ltd | Builders | LL18 4JW | 2025 |
| B L Williams Renewables Ltd | Builders | LL18 3NN | 2024 |
| Bay Interiors (Nw) Ltd | Builders | LL17 0JA | 2014 |
| Bedford Homes (Nw) Ltd | Builders | LL17 0JA | 2025 |
| Bedw Ltd | Builders | LL17 0JG | 2001 |
| Beech Developments (Deganwy) Ltd | Builders | LL17 0JE | 2019 |
| Bequant Ltd | Builders | LL17 0LQ | 2023 |
| Blackwal Ltd | Builders | LL17 0RN | 2024 |
| Bob Francis Crane Hire Ltd | Builders | LL17 0JA | 1997 |
| Botteau Offshore Site Services Ltd | Builders | LL17 0JA | 2013 |
| Bridge Developments Ltd | Builders | LL18 5JA | 2024 |
| Brindle Lifting Solutions Ltd | Builders | LL17 0TE | 2011 |
| Bryn Mynan Ltd | Builders | LL17 0RN | 2011 |
| C.A.M. Scaffolding Services Ltd | Builders | LL17 0RN | 2018 |
| C.Wynne & Sons Ltd | Builders | LL18 5TY | 1959 |
| Ca Garratt Electrical Contractors Ltd | Builders | LL18 4NA | 2018 |
| Cartrefi Dolwen Ltd | Builders | LL17 0JA | 2021 |
| Cb Dabs Ltd | Builders | LL18 5LQ | 2025 |
| Cmw Building & Contracting Ltd | Builders | LL17 0RN | 2015 |
| Coastal Construction & Renovation Services Ltd | Builders | LL17 0JA | 2018 |
| Coastal Masonry Ltd | Builders | LL18 5HZ | 2025 |
| Coastal Nw Ltd | Builders | LL18 5JZ | 2021 |
| Coatech Ltd | Builders | LL18 2QA | 1992 |
| Conifer Property Services Ltd | Builders | LL17 0LJ | 2009 |
| Conwy Groundworks Ltd | Builders | LL18 5JP | 2026 |
| Countryside Wildlife Management Ltd | Builders | LL18 6ET | 2012 |
| County Maintenance (2010) Ltd | Builders | LL17 0JA | 2010 |
| Cr Construction (North Wales) Ltd | Builders | LL17 0JA | 2016 |
| Csh (Nw) Ltd | Builders | LL17 0PJ | 2026 |
| Curnan'S UK Ltd | Builders | LL17 0TE | 2013 |
| Cwcontracts Electrical & Property Maintanance Ltd | Builders | LL18 5PG | 2025 |
| D W Jones Ltd | Builders | LL17 0JA | 2024 |
| D10 Developments Ltd | Builders | LL17 0RN | 2021 |
| Dahne Gizzi Building Contractors Ltd | Builders | LL17 0JA | 2008 |
| David John Hunter Services Ltd | Builders | LL17 0JA | 2023 |
| Davies Transport and Plant Services Ltd | Builders | LL17 0TE | 2016 |
| Denbighshire Deck Movers Ltd | Builders | LL17 0JA | 2022 |
| Dgm Construction and Roofing Ltd | Builders | LL17 0RN | 2025 |
| Drew Builders & Developers Ltd | Builders | LL17 0JA | 2025 |
| Driveways North Wales Ltd | Builders | LL18 5LN | 2025 |
| Dt Improvement & Construction Ltd | Builders | LL18 3AL | 2023 |
| Dw Contractors Ltd | Builders | LL18 4FR | 2021 |
| E D R Interiors Ltd | Builders | LL17 0JA | 2007 |
| E.W. & E.W. Davies Ltd | Builders | LL17 0BH | 2011 |
| Eco Built Homes Ltd | Builders | LL17 0JA | 2020 |
| Emw Developments Ltd | Builders | LL18 2PH | 2014 |
| Envision Home and Gardens Ltd | Builders | LL17 0TA | 2025 |
| Ergotech Construction Ltd | Builders | LL18 5NB | 2022 |
| Esp Services Ltd | Builders | LL18 6HH | 2003 |
| Fennton Construction Ltd | Builders | LL17 0LG | 2019 |
| Fennton Developments Ltd | Builders | LL17 0LG | 2019 |
| Fennton Group Ltd | Builders | LL17 0LG | 2019 |
| Fennton Ltd | Builders | LL17 0LG | 2019 |
| Firstage Ltd | Builders | LL18 3UF | 1987 |
| Fmr Stonemasonry Ltd | Builders | LL17 0JA | 2020 |
| Free Eco Grants Ltd | Builders | LL18 6DE | 2022 |
| G Powell Construction Ltd | Builders | LL18 5FY | 2026 |
| G R Edwards Ltd | Builders | LL17 0TH | 2012 |
| Gareth Williams Building Ltd | Builders | LL17 0US | 2012 |
| Gk Higginson Ltd | Builders | LL18 6LF | 2022 |
| Glyn Lloyd & Sons Ltd | Builders | LL18 3LW | 1985 |
| Goughfamilypropertiesandtrading Ltd | Builders | LL18 4QA | 2025 |
| Greentops Properties Ltd | Builders | LL17 0JA | 2024 |
| Grosvenor Construction Ltd | Builders | LL18 5JA | 2009 |
| Harrison Specialist Joinery Ltd | Builders | LL18 5JZ | 2013 |
| Heavy Lift Solutions Ltd | Builders | LL17 0TE | 2012 |
| Hender Homes Ltd | Builders | LL17 0RN | 2007 |
| High Peak Courses Ltd | Builders | LL17 0JA | 2004 |
| Hughes Structural Steel Ltd | Builders | LL18 5HD | 2018 |
| Hulse Developments Ltd | Builders | LL17 0JA | 2023 |
| J & M Developments North Ltd | Builders | LL17 0JA | 2022 |
| J D Jones Contractors (North Wales) Ltd | Builders | LL18 6LG | 2005 |
| J Packham Construction Ltd | Builders | LL18 2LT | 2025 |
| James Hughes Developments Ltd | Builders | LL17 0RN | 2022 |
| Jamie Roberts Builders Ltd | Builders | LL17 0RN | 2025 |
| Jarvis Jones Developments & Joinery Ltd | Builders | LL17 0RN | 2025 |
| Jj Offshore Construction Ltd | Builders | LL17 0JE | 2015 |
| John Owens Building, Joinery & Property Maintenance Ltd | Builders | LL17 0JA | 2023 |
| Jpc Lifting Services Ltd | Builders | LL17 0TE | 2012 |
| Just Kitchens & Bedrooms Associates Ltd | Builders | LL18 3LW | 2012 |
| K9 Self-Wash Systems Ltd | Builders | LL17 0TE | 2026 |
| Kearsley Brickwork Ltd | Builders | LL18 4UL | 2019 |
| Law Construction (North West) Ltd | Builders | LL18 2DL | 2017 |
| Lca Multi Trade Ltd | Builders | LL18 2PL | 2023 |
| Leigh'S Property Services Ltd | Builders | LL18 3DS | 2021 |
| Lewis Building Contractors Ltd | Builders | LL17 0RN | 2026 |
| Llandudno Junction Developments Ltd | Builders | LL17 0JE | 2023 |
| M & B Contractors Ltd | Builders | LL17 0LG | 2004 |
| M & G Graham Ltd | Builders | LL17 0JG | 2011 |
| Macbryde Homes Ltd | Builders | LL17 0LJ | 2020 |
| Martin Brothers Plastering Ltd | Builders | LL17 0JA | 2016 |
| Megashedz Buildings Ltd | Builders | LL18 5UZ | 2011 |
| Mwbc Ltd | Builders | LL17 0JA | 2008 |
| N & J Scaffolding Ltd | Builders | LL17 0JA | 2019 |
| N. Gizzi Building Contractors Ltd. | Builders | LL17 0JA | 2005 |
| N.W.P.S. Construction Ltd | Builders | LL18 2AD | 2002 |
| Nathan'S Trades Ltd | Builders | LL18 1NN | 2021 |
| Neil Picton Ltd | Builders | LL17 0JA | 2026 |
| North Coast Heating and Renewables Ltd | Builders | LL17 0JA | 2026 |
| North Wales Lofts Ltd | Builders | LL18 5LB | 2025 |
| North Wales Property & Maintenance Services Ltd | Builders | LL18 5NS | 2012 |
| North Wales Property Services Ltd | Builders | LL18 2AP | 2022 |
| North Wales Resin Drives Ltd | Builders | LL17 0JA | 2002 |
| North West Property Services Construction Ltd | Builders | LL18 2AD | 2012 |
| Oakholme Construction Ltd | Builders | LL18 5UT | 2023 |
| P L Hambi Ltd | Builders | LL17 0JE | 2026 |
| P.W. Dallimore (Fencing) Ltd | Builders | LL18 3BL | 1994 |
| Parkcity Multitrade Ltd | Builders | LL17 0LP | 2012 |
| Parkspan Construction(North Western) Ltd | Builders | LL18 4TN | 1966 |
| Parkspan Holdings(North Western) Ltd | Builders | LL18 4TN | 1966 |
| Phoenix Gas Heating & Plumbing Ltd | Builders | LL18 4DL | 2025 |
| Pitch Perfect Line Marking Ltd | Builders | LL17 0FG | 2022 |
| Pochin Industrial Ltd | Builders | LL17 0RN | 2026 |
| Prestige Construction Nw Ltd | Builders | LL18 5RA | 2024 |
| Principal Properties (North Wales) Ltd | Builders | LL17 0JA | 2019 |
| Promix (Nw) Ltd | Builders | LL18 5HH | 2015 |
| Proof Building Conwy Ltd | Builders | LL17 0RN | 2022 |
| Property Right Services Nw Ltd | Builders | LL18 1DP | 2026 |
| Pure Commercial (Ruabon) Ltd | Builders | LL17 0LP | 2018 |
| Pure Homes (Rhuthun) Ltd | Builders | LL17 0LP | 2021 |
| Pure Homes (Ruabon) Ltd | Builders | LL17 0LP | 2000 |
| Pure Homes Nw Ltd | Builders | LL17 0LP | 2018 |
| Pure Residential & Commercial (Bodelwyddan) Ltd | Builders | LL17 0LP | 2020 |
| Pure Residential & Commercial (Chester) Ltd | Builders | LL17 0LP | 2019 |
| Pure Residential & Commercial (Llanfair) Ltd | Builders | LL17 0LP | 2018 |
| R & J Decking Ltd | Builders | LL17 0JA | 2022 |
| R B Heavy Lifting Solutions Ltd | Builders | LL17 0TE | 2013 |
| R M Construction North Wales Ltd | Builders | LL17 0RN | 2026 |
| R Moore Building Conservation Ltd | Builders | LL18 5SW | 2023 |
| Rakestraw Construction Ltd | Builders | LL18 3LW | 2015 |
| Rees Brothers Ltd | Builders | LL18 3LW | 2012 |
| Resin Driveways North Wales Ltd | Builders | LL17 0JA | 2016 |
| S J Offshore Services Ltd | Builders | LL17 0TE | 2015 |
| Sclt Developments Ltd | Builders | LL17 0JA | 2026 |
| Shb Safety Ltd. | Builders | LL17 0JE | 2016 |
| Sohail Properties Ltd | Builders | LL18 1RL | 2020 |
| Solwind Ltd. | Builders | LL17 0JE | 2025 |
| Sonic Solutions Nw Ltd | Builders | LL18 5LY | 2026 |