| 3 Celts Ltd | Builders | NP44 3AB | 2019 |
| A & S Brickwork Ltd | Builders | NP4 6NG | 2026 |
| A L Robins Partitioning & Suspended Ceiling Ltd | Builders | NP44 1LW | 2024 |
| A P Waters Building Contractors Ltd | Builders | NP4 8AN | 2007 |
| A Roche Services Ltd | Builders | NP44 3AB | 2018 |
| A Touch of Glass and Glazing Ltd | Builders | NP44 1JW | 2022 |
| A.J. Quinn Building Contractors Ltd | Builders | NP4 5EJ | 2001 |
| Abbyfield Construction Ltd | Builders | NP4 8DD | 2000 |
| Advance Home Improvements Ltd | Builders | NP44 2YP | 2018 |
| Alex Barry Construction & Developments Ltd | Builders | NP4 6TF | 2026 |
| All About Windows Ltd | Builders | NP4 5JA | 2011 |
| Almobarak Construction Ltd | Builders | NP4 5DA | 2024 |
| Alpha B C Services Ltd | Builders | NP44 6JQ | 2021 |
| Amicus Property Solutions Ltd | Builders | NP4 6AD | 2025 |
| Apex Home Solutions Ltd | Builders | NP44 1UU | 2006 |
| Arcana Services Ltd | Builders | NP4 5ST | 2024 |
| Architectural Castings Ltd | Builders | NP44 3AB | 2022 |
| Avondale Exhibitions Ltd | Builders | NP44 3AB | 2009 |
| Aztec Property Tredegar Ltd | Builders | NP44 5TD | 2024 |
| Balaam Ltd | Builders | NP44 1EZ | 2012 |
| Bancroft Property Services Ltd | Builders | NP4 5LT | 2018 |
| Bespoke Maintenance & Facilities Management Ltd | Builders | NP4 8ES | 2026 |
| Bmg Construction (Mb) Ltd | Builders | NP4 5YN | 2022 |
| Boss Emy Ltd | Builders | NP44 1RB | 2026 |
| Brambles Builders Ltd | Builders | NP4 6TF | 2020 |
| Bree (Wales) Ltd | Builders | NP4 5AE | 2014 |
| Brickcraft Building and Civil Engineering Ltd | Builders | NP4 9BP | 2002 |
| Bristol Bath Builders Ltd | Builders | NP4 8EG | 2020 |
| Building Bloc Ltd | Builders | NP44 3AU | 2020 |
| C P Contracts Sw Ltd | Builders | NP4 5SQ | 2024 |
| C R Roofing & Building Ltd | Builders | NP4 0SY | 2002 |
| C&L Contract Cleaning Ltd | Builders | NP44 6HE | 2013 |
| Caerau Developments Ltd. | Builders | NP44 6JR | 2014 |
| Capsel Ltd | Builders | NP4 0JJ | 2012 |
| Cbuildr Ltd | Builders | NP44 3AB | 2021 |
| Cementorious Construction Ltd | Builders | NP44 7HZ | 2020 |
| Choose Solution Ltd | Builders | NP44 1RB | 2025 |
| Clic It Management Ltd | Builders | NP44 3QG | 2025 |
| Complete Kitchens Ltd | Builders | NP44 3JU | 1996 |
| Compliant Fire Safety Solutions Ltd | Builders | NP44 1NY | 2026 |
| Concrete Antibrasive Refractory Liningsi Ltd | Builders | NP4 5HR | 2023 |
| County Construction Solutions Ltd | Builders | NP44 2LE | 2023 |
| County Contractors Maintenance Services Ltd | Builders | NP44 5BG | 2003 |
| County Roofing Ltd | Builders | NP44 3NA | 2025 |
| County Scaffolding Services (Css) Ltd | Builders | NP44 3NA | 2020 |
| Craxford Brothers (Usk) Ltd | Builders | NP4 5JF | 2011 |
| Crownhill Monmouthshire Ltd | Builders | NP44 3AU | 2025 |
| Cw Mould Solutions Ltd | Builders | NP44 5BG | 2025 |
| Cwmbran Kitchen Floors and Doors Ltd | Builders | NP44 3JU | 2024 |
| D E Building Contractors Ltd | Builders | NP44 3AU | 2024 |
| D J Decorators Ltd. | Builders | NP44 3LN | 2002 |
| D M O’Brien Construction Ltd | Builders | NP44 3AU | 2021 |
| D T Contracting (South West) Ltd | Builders | NP44 7HB | 2013 |
| D. Lucas & Sons Ltd | Builders | NP4 0LS | 1994 |
| D3 Property Developments Ltd | Builders | NP4 6NG | 2014 |
| Daly Grind Ltd | Builders | NP44 3QE | 2026 |
| David Turner Construction Ltd | Builders | NP4 0HN | 2020 |
| Dbem Constructii Ltd | Builders | NP44 1RB | 2026 |
| Delaw General Builders Ltd | Builders | NP44 3AB | 2010 |
| Denmore Homes Ltd | Builders | NP4 0XZ | 2016 |
| Designbuilduk Ltd | Builders | NP4 8EZ | 2024 |
| Doctor Windows Ltd | Builders | NP44 3AX | 2015 |
| Domjorella Developments Ltd | Builders | NP4 0SY | 2018 |
| Edwards Contractors Group Ltd | Builders | NP4 5JR | 2026 |
| Enfys Property Ltd | Builders | NP4 6BN | 2018 |
| Evergreen Investment and Development Ltd | Builders | NP44 8RE | 2026 |
| Evolve Home Energy Solutions Ltd | Builders | NP44 3FD | 2015 |
| Exclusive (Ex) Ltd | Builders | NP44 3AB | 2010 |
| Facilities Maintenance Group Ltd | Builders | NP44 5BG | 2003 |
| Fcy Interiors Ltd | Builders | NP44 2BL | 2018 |
| Feenix Group Ltd | Builders | NP4 8BQ | 2025 |
| Fernandes & Co Ltd | Builders | NP4 0TY | 2015 |
| G & G (Cwmbran) Ltd | Builders | NP44 5AZ | 2017 |
| G&D Structures Ltd | Builders | NP44 5SF | 2023 |
| G.H.P Mechanical and Electrical Ltd | Builders | NP44 3AU | 2026 |
| Gareth’S Property Maintenance Ltd | Builders | NP44 1FJ | 2024 |
| Ge Pro-Sealants Ltd | Builders | NP44 3JU | 2006 |
| Glanmor Developments Ltd | Builders | NP44 8HP | 1981 |
| Gower Construction & Enclosures Ltd | Builders | NP4 9BP | 2010 |
| Gwent Blast Ltd | Builders | NP4 6TF | 2023 |
| Gwent County Construction Ltd | Builders | NP4 5BN | 2018 |
| Gwent Lime Ltd | Builders | NP4 8EY | 2014 |
| Hedlyn Building Contractors Ltd | Builders | NP4 6PB | 2018 |
| Hillier Construction Services Ltd | Builders | NP44 3AB | 2021 |
| Home Care Maintenance Ltd | Builders | NP44 5BG | 2003 |
| Id Projects Consultancy Ltd | Builders | NP4 6NU | 2011 |
| Ig Construction Services Ltd | Builders | NP44 2EZ | 2020 |
| Inst-Halls Installation Services Ltd | Builders | NP4 9QQ | 2023 |
| Intershell Group Ltd | Builders | NP44 1TS | 2000 |
| Intershell Systems Ltd | Builders | NP44 1TS | 1989 |
| J Edwards Consultancy Ltd | Builders | NP4 5DT | 2026 |
| J P Powell Building Contractor Ltd | Builders | NP4 6NG | 2024 |
| J Tunley Contractors Ltd | Builders | NP44 6HU | 2014 |
| J.M. Vokes Ltd | Builders | NP44 5AL | 1967 |
| Jack of All Trades Ltd | Builders | NP4 8NL | 2019 |
| Jclad Cladding and Windows Ltd | Builders | NP44 2PN | 2021 |
| Jeffries Construction Ltd | Builders | NP4 9HT | 2014 |
| Job Done Renovations Ltd | Builders | NP44 2QJ | 2026 |
| Josh Ramsey Construction Ltd | Builders | NP4 0AW | 2021 |
| Jr Kitchens Ltd | Builders | NP4 6ED | 2019 |
| Jsp Building Contractors Ltd | Builders | NP4 6DQ | 2021 |
| Just-Build UK. Ltd | Builders | NP44 3GA | 2019 |
| K B Building Contractors Ltd | Builders | NP44 3AU | 2017 |
| K J Building Developers Ltd | Builders | NP44 7BB | 2025 |
| Kavod Roofing & Construction Ltd | Builders | NP44 1RF | 2025 |
| Kb Build & Rendering Solutions Ltd | Builders | NP4 8JL | 2022 |
| Keltic Property Services Ltd | Builders | NP4 8HB | 2026 |
| Led Sealants Ltd | Builders | NP44 1FN | 2024 |
| Limefield Properties Ltd | Builders | NP4 5DQ | 2016 |
| Limitless Construction (Mb) Ltd | Builders | NP4 6QY | 2020 |
| Ljarvis Ltd | Builders | NP44 1GB | 2022 |
| Ljm Building & Maintenance Ltd | Builders | NP44 6UP | 2026 |
| Lvc Construction Ltd | Builders | NP4 8JJ | 2022 |
| M J Pearce Building and Landscaping Ltd | Builders | NP4 7JQ | 2017 |
| Marchant Home Solutions Ltd Ltd | Builders | NP44 5JF | 2026 |
| Midas Display Systems Ltd | Builders | NP44 1TS | 2002 |
| Mito Developments (Sw) Ltd | Builders | NP44 7HB | 2018 |
| Mk Lifting Ltd Ltd | Builders | NP4 8JQ | 2026 |
| Morspan Construction Ltd | Builders | NP44 3AB | 2006 |
| Msh Building Ltd | Builders | NP44 5BB | 2007 |
| Msm Partitioning Ltd | Builders | NP4 0TL | 2006 |
| N G Construction Ltd | Builders | NP44 3AU | 2003 |
| Node-Point Scaffolding Ltd | Builders | NP4 8HB | 2026 |
| Olerenshaw Home Improvements Services Ltd | Builders | NP44 7JN | 2023 |
| Onsite Civils Ltd | Builders | NP4 6RY | 2022 |
| Outdoor Innovations- Alan and Nicola Ltd | Builders | NP44 2LR | 2025 |
| P&G Tm Services Ltd | Builders | NP44 2EH | 2025 |
| Pa Rebar Ltd | Builders | NP44 1SG | 2017 |
| Pe Site Solutions Ltd | Builders | NP4 7DQ | 2019 |
| Pearwood Developments Ltd | Builders | NP44 5TQ | 2024 |
| Pearwood Group Ltd | Builders | NP44 5TQ | 2024 |
| Pearwood Maintenance Ltd | Builders | NP44 5TQ | 2024 |
| Pearwood Projects Ltd | Builders | NP44 5TQ | 2021 |
| Pelle Groundworks Ltd | Builders | NP44 3AB | 2024 |
| Pencoed Reinforcements Ltd | Builders | NP44 5AY | 2004 |
| Pendragon (Design & Build) Ltd | Builders | NP44 1AJ | 1984 |
| Pheonix Group Ltd | Builders | NP4 8BQ | 2025 |
| Phoenix Partitioning Ltd | Builders | NP4 6YW | 1999 |
| Priddle Building Services Ltd | Builders | NP4 6TF | 2020 |
| Pro Build Torfaen Ltd | Builders | NP4 7HH | 2026 |
| Pure Sealants Ltd | Builders | NP44 7AD | 2026 |
| R Senior & Son Ltd | Builders | NP44 3AU | 2004 |
| R Sonny Ltd | Builders | NP4 9AN | 2019 |
| Reinvigorate Global Ltd | Builders | NP4 6UA | 2010 |
| Risca Developments Ltd | Builders | NP44 3AB | 2019 |
| Rje Construction and General Builders Ltd | Builders | NP44 3AB | 2023 |
| Rme Property Investments Ltd | Builders | NP44 8SR | 2024 |
| Rogerstone Landscaping & Driveways Ltd | Builders | NP44 7UT | 2017 |
| Rosebush Homes Ltd | Builders | NP4 0XZ | 2019 |
| Rowanwood Developments Ltd | Builders | NP4 8SJ | 2020 |