| 3 Pdc Ltd | Builders | SA2 0SL | 2006 |
| A J Services (Swansea) Ltd. | Builders | SA4 4AA | 2003 |
| A S & E Contracts Ltd | Builders | SA4 0UY | 2014 |
| A.L.Dudley Services Ltd | Builders | SA4 3JX | 2017 |
| Adam Ford Project Management Ltd | Builders | SA4 9FX | 2015 |
| Adt Technical Ltd | Builders | SA2 9FE | 2021 |
| Anton Homes Ltd | Builders | SA3 4JE | 2001 |
| Applied Products (Wales) Ltd | Builders | SA4 9WG | 2001 |
| Approved Property Solutions Ltd | Builders | SA2 9JE | 2018 |
| Atlantic 03 Ltd | Builders | SA3 3AP | 2003 |
| Atrium Construction2022 Ltd | Builders | SA2 0SR | 2022 |
| B Roach Services Ltd | Builders | SA4 3JX | 2017 |
| Bailey Construction (Loughor) Ltd | Builders | SA4 4PA | 2006 |
| Beachtree Builders Ltd | Builders | SA2 8JW | 2024 |
| Bickford Building and Civil Engineering Ltd | Builders | SA4 3SN | 2022 |
| Biggs Contracting Services Ltd | Builders | SA4 3BD | 2026 |
| Bislar Ltd | Builders | SA2 0AF | 2025 |
| Block Property Maintenance Ltd | Builders | SA2 7HJ | 2024 |
| Bluetree Systems Ltd | Builders | SA4 0UD | 2011 |
| Bradbar Construction Ltd | Builders | SA3 1ED | 2021 |
| Build Technology Ltd | Builders | SA2 9GW | 2026 |
| C N Evans Plant Hire Ltd | Builders | SA4 9BA | 2003 |
| Cambrica Timber Frames Ltd | Builders | SA2 7UP | 2024 |
| Capel Construction Ltd | Builders | SA3 4QE | 2025 |
| Cavi Care Ltd | Builders | SA4 0XB | 2023 |
| Ceri Hall Construction Ltd | Builders | SA4 6UA | 2009 |
| Charisma Construction Ltd | Builders | SA4 3EY | 2022 |
| Claemore Building Contractor Ltd | Builders | SA2 7AS | 2017 |
| Clockwerk Ltd | Builders | SA3 4JE | 2013 |
| Cmt Bricklaying Ltd | Builders | SA4 9FG | 2017 |
| Coast Carpentry and Renovations Ltd | Builders | SA2 7AL | 2021 |
| Coates Developments Ltd | Builders | SA2 9BX | 2023 |
| Coombs Land Surveys Ltd | Builders | SA2 7UZ | 2023 |
| Copr Contracts Ltd | Builders | SA3 3AL | 2024 |
| Corner Plot Holdings Ltd | Builders | SA2 9LT | 2020 |
| Cotswold Rooms & Wellbeing Ltd | Builders | SA2 7UB | 2025 |
| Cotterell Construction Ltd | Builders | SA4 9HR | 2026 |
| Craftsmen Elite Ltd | Builders | SA2 9BX | 2023 |
| Crystal Portafino Ltd | Builders | SA4 8SY | 2015 |
| Cusco Property Services Ltd | Builders | SA2 7QY | 2016 |
| D & D Home Maintenance Solutions Ltd | Builders | SA2 7UX | 2023 |
| D.G. Bevan Building Contractors Ltd | Builders | SA3 1JE | 2002 |
| Damp Shield (South Wales) Ltd | Builders | SA4 9WE | 2013 |
| Dc Plumbing & Construction Ltd | Builders | SA2 7BY | 2026 |
| Dean Phillips Building and Plastering Ltd | Builders | SA2 9BX | 2024 |
| Dma Plant & Utilities Ltd | Builders | SA3 1BT | 2023 |
| Down To Earth Construction | Builders | SA3 3AP | 2014 |
| Dragon Pump Services Ltd | Builders | SA2 7AL | 1998 |
| Dtl Carpentry Swansea Ltd | Builders | SA4 3XA | 2022 |
| Eaglemaintenanceservices Ltd | Builders | SA3 2EB | 2017 |
| East Midlands Underfloor Heating Store Ltd | Builders | SA2 7HA | 2016 |
| Emment Builders Ltd | Builders | SA3 5AU | 2018 |
| Energywise-Wales Ltd | Builders | SA3 2EW | 2012 |
| Ev-Wales Ltd | Builders | SA4 3RS | 2019 |
| Everlast Construction Ltd | Builders | SA4 4JG | 2002 |
| Fairfield Developments Ltd | Builders | SA3 4QE | 2009 |
| Fall Bay Building Services Ltd | Builders | SA2 7DR | 2021 |
| Fforest Construction Group Ltd | Builders | SA4 0TW | 2023 |
| Fforest Timber Frames Ltd | Builders | SA4 9WN | 2008 |
| First Choice Interiors (Swansea) Ltd | Builders | SA2 0GQ | 2015 |
| Fixit Cleaners Ltd | Builders | SA3 5NY | 2024 |
| Footpathproperties Ltd | Builders | SA2 7DP | 2025 |
| Garden Room Wales Ltd | Builders | SA4 3EY | 2021 |
| Gcs Carpentry and Property Maintenance Ltd | Builders | SA2 7DS | 2024 |
| Glamorgan Construction Ltd | Builders | SA4 3RS | 2015 |
| Gm Construction Services Ltd | Builders | SA4 4UR | 2000 |
| Gower Building Services Ltd | Builders | SA3 3DR | 2024 |
| Gower Commercial Building Services Ltd | Builders | SA2 7HP | 2022 |
| Gower Energy Ltd | Builders | SA4 3XB | 2019 |
| Graham A Jones (Lofts & Extensions) Ltd | Builders | SA4 9DX | 2021 |
| Green Dream Concepts Ltd | Builders | SA4 4AN | 2023 |
| Green Energy Mab Ltd | Builders | SA4 6SD | 2022 |
| Greens Complete Contract Maintenance Ltd | Builders | SA3 4AS | 2022 |
| Greens Construction Services Ltd | Builders | SA3 4AS | 2026 |
| Greenway Homes Developments Ltd | Builders | SA4 0UD | 2016 |
| Gwyn Davies Carpentry Ltd | Builders | SA2 7ER | 2005 |
| Gwyn Faen Developments Ltd | Builders | SA4 4JG | 2024 |
| Haines & Son Outdoor Developments Ltd | Builders | SA2 7AL | 2017 |
| Hasmore Homes Ltd | Builders | SA4 4BJ | 2003 |
| Homes On Gower Ltd | Builders | SA2 7AL | 2020 |
| Idh Construction Ltd | Builders | SA4 9HF | 2026 |
| Immobiliare Gl Ltd | Builders | SA3 4HB | 2021 |
| Industrial Inspection Ltd | Builders | SA3 3HH | 2023 |
| Inspirebuilding Ltd | Builders | SA2 7EE | 2023 |
| Intrinsic Aura Ltd | Builders | SA4 8LH | 2018 |
| Iris International Infrastructures Ltd | Builders | SA2 7PP | 2013 |
| J&F Elements Ltd. | Builders | SA2 9DG | 2017 |
| J.F. Cahill Ltd | Builders | SA2 0FT | 2006 |
| James Drylining Ltd | Builders | SA4 9QY | 2025 |
| Jc Irvine Ltd | Builders | SA2 7AA | 2007 |
| Jcr Co1 Ltd | Builders | SA3 5EF | 2026 |
| Jdd Builders Ltd | Builders | SA2 9JP | 2016 |
| Jimmyjack Services Ltd | Builders | SA4 3RD | 2010 |
| Jm Building Contractors (Swansea) Ltd | Builders | SA2 9JR | 2017 |
| K.Evans Properties Ltd | Builders | SA4 9DJ | 2024 |
| Kalkan Builder Swansea Ltd | Builders | SA3 5LQ | 2025 |
| Kb Plastering & Construction Ltd | Builders | SA2 7HR | 2024 |
| Kg Carpentry and Building Ltd | Builders | SA4 3ER | 2021 |
| Kodavell Group Ltd | Builders | SA2 9JA | 2025 |
| Lee Design Ltd | Builders | SA2 0PA | 2003 |
| Lfn Building and Home Improvements Ltd | Builders | SA4 4HN | 2014 |
| Lland Ltd | Builders | SA3 5QJ | 2004 |
| Lorax Homes Ltd | Builders | SA4 0ZW | 2018 |
| Lwrs Ltd | Builders | SA2 9BX | 2026 |
| Maily Builders Ltd | Builders | SA2 8JW | 2019 |
| Man About the House Ltd | Builders | SA3 3LB | 2022 |
| Marshall Enterprises (Swansea) Ltd | Builders | SA2 7AL | 2003 |
| Marval Developments Ltd | Builders | SA3 2AS | 2011 |
| Matthew Thomas Landscaping Ltd | Builders | SA4 8LT | 2008 |
| Md Carpentry Ltd | Builders | SA2 0SF | 2015 |
| Mead Services Ltd | Builders | SA3 1HB | 2003 |
| Mgj Brickwork Ltd | Builders | SA4 6BA | 2026 |
| Mills Property Services Ltd | Builders | SA4 9AR | 2025 |
| Moore Interiors (Wales) Ltd | Builders | SA4 4FE | 2006 |
| Moore Planning & Design Ltd | Builders | SA4 4FE | 2017 |
| Moorlandsgroup Ltd | Builders | SA4 3NE | 2026 |
| Morgan Building Contractors Ltd | Builders | SA3 4LD | 2026 |
| Morris and Jones Carpentry and Building Ltd | Builders | SA3 1HN | 2024 |
| Mumbles Property Consultants Ltd | Builders | SA3 5NG | 2018 |
| Nali Building & Construction Ltd | Builders | SA2 0XD | 2025 |
| Nev Construction Ltd | Builders | SA2 9AY | 2023 |
| Newton Barnes Joinery & Construction Ltd | Builders | SA3 4NH | 2020 |
| No51 Projects Ltd | Builders | SA3 3EN | 2023 |
| O'Brien Security Systems Ltd | Builders | SA2 9BZ | 2004 |
| Ocon Group Ltd | Builders | SA3 3JZ | 2021 |
| Oxoco Ltd | Builders | SA3 1AF | 2021 |
| Plan A Glazing & Construction Services Ltd | Builders | SA4 9WF | 2018 |
| Prime Roofing Specialists Ltd | Builders | SA4 4YT | 2024 |
| Property Performance Group Ltd | Builders | SA4 9FD | 2026 |
| Quality Tiling Services Ltd | Builders | SA3 5BX | 2025 |
| R & L Roofing - Building Ltd | Builders | SA2 0TY | 2025 |
| R Beddow & Son Ltd | Builders | SA2 7UZ | 2016 |
| R&C Maintenance Ltd | Builders | SA3 1BE | 2011 |
| Rainbow Solutions Wales Ltd | Builders | SA4 4BY | 2003 |
| Rd Jones Building Ltd | Builders | SA4 3SJ | 2022 |
| Reactodamp Ltd | Builders | SA2 9HB | 2018 |
| Reflex Property Maintenance Ltd | Builders | SA2 9BX | 2023 |
| Residential and Estate Support Services Ltd | Builders | SA2 0AP | 2025 |
| Richmond Property Services (Rps) Ltd | Builders | SA3 4BA | 2023 |
| Ridgewood Property Group Ltd | Builders | SA4 4FZ | 2026 |
| Roben Property Developments Ltd | Builders | SA2 9BX | 2026 |
| Rogers and Russell (Contracting) Ltd | Builders | SA4 9DX | 2020 |
| Ryjo Construction Ltd | Builders | SA2 0AY | 2019 |
| S J Bessent Construction Services Ltd | Builders | SA4 6UQ | 2003 |
| S L J Ltd | Builders | SA2 7UH | 2005 |
| S M Richmond Ltd | Builders | SA4 9EN | 2022 |
| Scott Jenkins Interior Solutions Ltd | Builders | SA4 4GR | 2025 |
| Set-Rite Construction Ltd | Builders | SA3 5PB | 2016 |
| Shane Davies Services Ltd | Builders | SA4 9RU | 2018 |
| Stephen Pritchard Energy Assessor Ltd | Builders | SA4 0XA | 2024 |