| A and P Building Ltd | Builders | SA11 2TA | 2025 |
| A To Z Roofing & Property Maintenance Ltd | Builders | SA11 3BH | 2026 |
| A1 Garden Room Solutions Ltd | Builders | SA11 5HH | 2026 |
| A1 Industrial Roofing & Cladding Specialists Ltd | Builders | SA10 7EG | 2026 |
| Adrian Powell Developments Ltd | Builders | SA10 7DT | 2006 |
| Advanced Brickwork Contractors Ltd. | Builders | SA10 9PN | 2011 |
| Affordable Quality Windows Ltd | Builders | SA10 7HP | 2020 |
| Ak Jones Property Management Ltd | Builders | SA11 4LR | 2026 |
| Akw Fabrications Ltd | Builders | SA11 1DQ | 2021 |
| Alb Property Services Ltd | Builders | SA11 2PF | 2019 |
| Amd Construction South Wales Ltd | Builders | SA11 3BH | 2024 |
| Anderson Building & Maintenance Ltd | Builders | SA11 2AY | 2025 |
| Applefray Ltd | Builders | SA10 7AJ | 2019 |
| Art Construct Ltd | Builders | SA10 6FS | 2007 |
| Ascend Exterior Solutions Ltd | Builders | SA10 9NH | 2026 |
| Ascragga Rooch Infrastructure Projects Ltd | Builders | SA11 1DJ | 2019 |
| Aspect Groundworks Ltd | Builders | SA11 5NF | 2023 |
| Bailey Thomas Shutters Ltd | Builders | SA10 7DN | 2024 |
| Bailey'S Blinds Neath Ltd | Builders | SA10 7DN | 2021 |
| Baileys Blinds Swansea Ltd | Builders | SA10 7DN | 2025 |
| C & P Building Contractors Ltd | Builders | SA10 7DR | 2022 |
| C & R Solutions Wales Ltd | Builders | SA10 7EL | 2024 |
| C. Moses Roofing Ltd | Builders | SA11 4BG | 1982 |
| C.A.J. Fielding Engineering Services Ltd | Builders | SA11 3XF | 2013 |
| Caer Hendy Gardens Ltd | Builders | SA10 6AY | 2005 |
| Cah Ltd | Builders | SA11 5UN | 1999 |
| Caled Bricklaying Ltd | Builders | SA11 5LB | 2025 |
| Carl Hendy Ltd | Builders | SA11 1LF | 2013 |
| Cavi Clear Ltd | Builders | SA11 1DQ | 2018 |
| Cavibuild Ltd | Builders | SA11 2NS | 2022 |
| Cfj Developments Ltd | Builders | SA10 6EJ | 2024 |
| Cladding Technology Ltd | Builders | SA10 7HQ | 2023 |
| Clh Brickwork Ltd | Builders | SA11 4AQ | 2026 |
| Cm Nest Ltd | Builders | SA11 3RN | 2025 |
| Concrete Structures & Floors Ltd | Builders | SA10 7DR | 2012 |
| Construction Group Ltd | Builders | SA10 6LR | 2016 |
| Core Seal Ltd | Builders | SA11 4HF | 2017 |
| Creative Paving (Tvs) Ltd | Builders | SA11 3BH | 2022 |
| Crown Property & Roofing Specialist Ltd | Builders | SA11 3BH | 2024 |
| Crynant Home Improvements & Conservatories Ltd | Builders | SA10 8PX | 2018 |
| Cyris Plant Operations Ltd | Builders | SA11 5EY | 2023 |
| D H Designer Home Improvements Ltd | Builders | SA11 2SL | 2026 |
| Derwen Aggregates Ltd | Builders | SA10 6BL | 1995 |
| Diamondps Ltd | Builders | SA10 8ET | 2026 |
| Dlis Ltd | Builders | SA11 3NT | 2019 |
| Dragonstone Construction Ltd | Builders | SA11 1DT | 2026 |
| Dunamis Builders Ltd | Builders | SA11 3AY | 2024 |
| Eco Connect Network Ltd | Builders | SA10 9EB | 2020 |
| Elias Carpentry Ltd | Builders | SA10 6DP | 2019 |
| Exemplar Brickwork Ltd | Builders | SA11 4BG | 2026 |
| Glamorgan Services Ltd | Builders | SA10 7HQ | 1997 |
| Gofod Cartref Ltd | Builders | SA10 8HP | 2026 |
| Golding Qs Services Ltd | Builders | SA10 7RZ | 2017 |
| Highgate Bespoke Renovations Ltd | Builders | SA10 6HA | 2025 |
| Ibm Brickwork Ltd | Builders | SA11 1YA | 2020 |
| Icc (Sw) Ltd | Builders | SA10 8AW | 2026 |
| J G Jones (Kitchen Installations) Ltd | Builders | SA11 3RL | 2004 |
| J M Evans Building Ltd | Builders | SA11 2PA | 2025 |
| J V Formwork Ltd | Builders | SA10 6EH | 2026 |
| J. D. C. Developments Ltd. | Builders | SA11 4AN | 1999 |
| J.G. Hale Construction Ltd | Builders | SA11 1NJ | 1999 |
| James Shopfitting Ltd | Builders | SA10 9DH | 2022 |
| Jason Wright Ltd | Builders | SA10 9LD | 2023 |
| Jc Resin Ltd | Builders | SA11 3BH | 2023 |
| Jones’S Property Solutions Ltd | Builders | SA11 1AN | 2026 |
| K & J Property Solutions Ltd | Builders | SA10 9DF | 2025 |
| K&D Europe Constructions Ltd | Builders | SA10 6RS | 2023 |
| K&M Building Solutions Ltd | Builders | SA11 2RD | 2020 |
| Kap Carpentry Ltd | Builders | SA10 6PE | 2024 |
| Krp Carpentry & Building Ltd | Builders | SA10 6UP | 2022 |
| Krp Renovations Ltd | Builders | SA10 6UP | 2023 |
| Kyle Davies Building Contractor Ltd | Builders | SA11 5AF | 2018 |
| Laken Construction Ltd | Builders | SA11 3LN | 2025 |
| Laken Group Ltd | Builders | SA11 3HW | 2025 |
| Ldeh Ltd | Builders | SA10 6JE | 2022 |
| Lr Drywall Finishers Ltd | Builders | SA10 8BE | 2023 |
| Marshall May Ltd | Builders | SA10 8BE | 2011 |
| Michael Thomas Building & Roofing Ltd | Builders | SA11 3BH | 2024 |
| Mjr Contracting Ltd | Builders | SA11 4BG | 2026 |
| Modu-Lite Build Ltd | Builders | SA11 1LE | 2025 |
| Modu-Lite Data Ltd | Builders | SA11 1LE | 2025 |
| Modular Building Structure Group Ltd | Builders | SA11 3AY | 2026 |
| Monster Heating Ltd | Builders | SA10 6FW | 2020 |
| Neath Cladding Ltd | Builders | SA10 7EG | 2021 |
| Neath Hardware Ltd | Builders | SA11 1NR | 2008 |
| Newlands Building Contractors Ltd | Builders | SA10 6HA | 2021 |
| Olive Tree Construction Neath Ltd | Builders | SA11 1DX | 2025 |
| Oriel Technical Services Ltd | Builders | SA11 3TN | 2013 |
| P&R Properties and Maintenance Ltd | Builders | SA10 7PL | 2024 |
| P. Elkins Construction Ltd | Builders | SA10 8PZ | 2006 |
| Parkside Professional Services Ltd | Builders | SA11 2TB | 2022 |
| Phc Group Ltd | Builders | SA10 7HQ | 2006 |
| Pmc Services (Wales & West) Ltd | Builders | SA11 5EY | 2018 |
| Premier Welsh Blinds Ltd | Builders | SA10 8HD | 2023 |
| Price Lifting Services Ltd | Builders | SA10 6TF | 2014 |
| Primus Brickwork Ltd | Builders | SA10 6HZ | 2026 |
| Property Construction & Development Ltd | Builders | SA10 6PA | 2015 |
| Quinns Brickwork Ltd | Builders | SA10 6UF | 2026 |
| R & M Williams Energy & Fabric Ltd | Builders | SA11 1BY | 2026 |
| R & M Williams Ltd | Builders | SA11 1BY | 1978 |
| R&R Waterblock Ltd | Builders | SA11 4NA | 2018 |
| Reality Renovations Ltd | Builders | SA10 7SH | 2017 |
| Refreshed Developments Ltd | Builders | SA10 7HB | 2020 |
| Rh Revamps Ltd | Builders | SA10 6EJ | 2022 |
| Richard Morgan (Contractors) Ltd. | Builders | SA11 2TY | 1996 |
| Rigby Construction Ltd | Builders | SA11 2BU | 2018 |
| Rj Welding & Fabrications Ltd | Builders | SA11 3AY | 2026 |
| Rk Wales Property Management Ltd | Builders | SA10 6EJ | 2023 |
| Rogers Bricklaying Contractors Ltd | Builders | SA10 9DP | 2014 |
| S & L Infinite Home Improvement Ltd | Builders | SA10 6FS | 2021 |
| S E Roofing and Building Services Ltd | Builders | SA11 3BH | 2026 |
| Safety Construction Services Ltd | Builders | SA11 4AA | 2020 |
| Secure Roofing & Building Ltd | Builders | SA11 3BH | 2026 |
| Seren Building Solutions Ltd | Builders | SA10 8BE | 2007 |
| Shirlan Construction Ltd | Builders | SA11 3XA | 2004 |
| Signature Carpentry Ltd | Builders | SA11 5EZ | 2023 |
| Siw Eco Energy Ltd | Builders | SA10 8HD | 2008 |
| Sleep Window Systems Ltd | Builders | SA11 4AU | 2017 |
| Smart Design Building & Roofing Ltd | Builders | SA11 5AH | 2025 |
| South Wales Fencing Ltd | Builders | SA10 6BA | 2009 |
| Sp & Am Building Services Ltd | Builders | SA11 3TE | 2017 |
| Sunshine Home Improvements Ltd | Builders | SA11 1DL | 2012 |
| Supreme Timberframe Ltd | Builders | SA11 3QQ | 2019 |
| T F Construction Management Ltd | Builders | SA11 5HN | 2017 |
| T Recycle Ltd | Builders | SA10 6TP | 2020 |
| Ta Carpentry Ltd | Builders | SA11 2AT | 2021 |
| Tc Building Contractors Ltd | Builders | SA10 9LT | 2016 |
| Terrain Living Ltd | Builders | SA11 5LB | 2026 |
| Top Frame Timber Frame Ltd | Builders | SA11 5EZ | 2016 |
| Top Plant Construction Ltd | Builders | SA11 5NF | 2018 |
| Trojan Pro Ltd | Builders | SA10 6YR | 2025 |
| UK-Build Ltd | Builders | SA11 2BW | 2022 |
| Unique Developments-UK Ltd | Builders | SA10 6EJ | 2025 |
| White Rock Property Care Ltd | Builders | SA10 6EN | 2010 |
| Wrs Repairs & Maintenance Ltd | Builders | SA11 4NA | 2026 |