| 2d Building Contractors Ltd | Builders | CF72 9DZ | 2010 |
| Action Building Solutions Ltd | Builders | CF72 9PJ | 2021 |
| Ah Finishing and Developments Ltd | Builders | CF39 9RB | 2026 |
| All Spec Solutions Ltd | Builders | CF40 1NZ | 2020 |
| Apw Facilities Ltd | Builders | CF72 8DN | 2009 |
| Artisanal Homes Ltd | Builders | CF72 9EW | 2024 |
| Artwork With Aluminium and Glass Ltd | Builders | CF72 9QH | 2019 |
| Ashbee Civils UK Ltd | Builders | CF40 2DY | 2019 |
| Ashfield Building Contractors Ltd | Builders | CF72 8NG | 2013 |
| Au Interiors Ltd | Builders | CF72 4AH | 2026 |
| Bailey Construction & Civils Ltd | Builders | CF72 8GA | 2008 |
| Barcombe Commercial & Property Services Ltd | Builders | CF72 9RG | 2026 |
| Bh Adref Ltd | Builders | CF40 2SS | 2021 |
| Bricks & Fire Ltd | Builders | CF40 1HE | 2025 |
| Brooks Carpentry & Construction Ltd | Builders | CF72 8FE | 2020 |
| C P Civil Engineering (UK) Ltd | Builders | CF72 9EZ | 2012 |
| Cambrian Trade Specialists Ltd | Builders | CF40 2XX | 2021 |
| Carl Richardson Services Ltd | Builders | CF39 0NG | 2018 |
| Channel Drylining Ltd | Builders | CF72 9BG | 2016 |
| Choctar Ltd | Builders | CF39 8TA | 2026 |
| Cme Construction Ltd | Builders | CF72 9RW | 2019 |
| Composite Doors Bristol Ltd | Builders | CF72 9ES | 2022 |
| Cory Bulford Construction Ltd | Builders | CF39 8SB | 2024 |
| Country Timbers Ltd | Builders | CF72 8LP | 2021 |
| Crown Brickwork Ltd | Builders | CF39 9TP | 2024 |
| D J Reynolds Builders Ltd | Builders | CF72 8GA | 2005 |
| D.B.M Building Maintenance Ltd. | Builders | CF39 0PB | 2013 |
| D.G & Sons Building & Engineering Contractors Ltd | Builders | CF40 2AT | 2020 |
| David Davies Construction Management Ltd | Builders | CF72 8EU | 2018 |
| David Edwards Investments Ltd | Builders | CF40 2HZ | 2016 |
| Davies Renovations Ltd | Builders | CF40 1RE | 2026 |
| Dch Drylining Ltd | Builders | CF40 2NE | 2018 |
| Dynamo Construction Development and Design Ltd | Builders | CF40 1HP | 2003 |
| Eagle Contractors Ltd | Builders | CF72 8BY | 2019 |
| Ean Construction Services Ltd | Builders | CF72 9ZG | 2019 |
| Eco Renovations and Recycling Ltd | Builders | CF39 0EL | 2025 |
| Ecofit Energy Systems Ltd | Builders | CF72 8TH | 2011 |
| Ecostructive Ltd | Builders | CF72 9DH | 2017 |
| Element Surfacing Ltd | Builders | CF72 8NG | 2020 |
| Elite Carpentry (Wales) Ltd | Builders | CF72 8NF | 2014 |
| Elite Construction Solutions Ltd | Builders | CF72 9WQ | 2016 |
| Elite Roofing South Wales Ltd | Builders | CF40 1HZ | 2024 |
| Energy Building Maintenance Ltd | Builders | CF40 2BG | 2017 |
| Falco Building Solutions Ltd | Builders | CF72 9TQ | 2024 |
| Flag Alpha Diving Consultancy Ltd | Builders | CF72 8JR | 2024 |
| Forest Wood Welding and Fabrication Ltd | Builders | CF72 9XD | 2025 |
| G L Thomas Construction Ltd | Builders | CF39 9LF | 2016 |
| G.C.R.B. Construction Ltd. | Builders | CF39 9SL | 2014 |
| Green Asset Solutions Ltd | Builders | CF72 8AF | 2013 |
| Griffiths Services Ltd | Builders | CF40 1LN | 2019 |
| Ground Up Building Contractors Ltd | Builders | CF72 9TH | 2024 |
| Ground Up Maintenance Ltd | Builders | CF72 9JF | 2026 |
| Gujon Interior Services Ltd | Builders | CF72 8NQ | 2024 |
| Hal Living Ltd | Builders | CF72 8NG | 2019 |
| Hal Properties Ltd | Builders | CF72 8NG | 2014 |
| Harding Roofing and Construction Ltd | Builders | CF72 9SB | 2025 |
| Hides Marine Ltd | Builders | CF72 8NG | 2014 |
| High Spec Ceilings Interiors Ltd | Builders | CF39 8TA | 2022 |
| Highadmit Interiors Ltd | Builders | CF72 8AJ | 2023 |
| Highadmit Projects Mechanical Ltd | Builders | CF72 8AJ | 2022 |
| Hoe Property Developments Ltd | Builders | CF72 9PT | 2005 |
| Hp Roofing and Building Ltd | Builders | CF40 2QW | 2016 |
| Huntley Finishes Ltd | Builders | CF40 2XX | 2024 |
| Huntley Trade Specialists Ltd | Builders | CF40 2DL | 2013 |
| I J Construction Ltd | Builders | CF39 0NG | 2014 |
| Ian Williams Carpentry Ltd | Builders | CF72 9DZ | 1999 |
| Index Waterproofing Technology UK Ltd | Builders | CF72 8AQ | 2010 |
| J & Sr Developments Ltd | Builders | CF40 2QQ | 2016 |
| J Frost Groundworks Ltd | Builders | CF39 8TW | 2023 |
| J Jenkins Builders Ltd | Builders | CF39 9TF | 2005 |
| J Langdon Developments Ltd | Builders | CF72 9PD | 2026 |
| Jag Installations Ltd | Builders | CF39 8UH | 2002 |
| Jag-Saracen Upvc Installations Ltd | Builders | CF39 8UH | 2008 |
| Jarman Constuction Maintenance Group Ltd | Builders | CF40 2UP | 2025 |
| Jlc Drylining Ltd | Builders | CF72 8JB | 2022 |
| Jm Construction Workers Ltd | Builders | CF72 9SG | 2025 |
| Jordan Civils (Wales) Ltd | Builders | CF72 8LF | 2012 |
| Joshua Stratford Health & Safety Ltd | Builders | CF72 4AS | 2024 |
| K & C Pearce Ltd | Builders | CF72 9EW | 2014 |
| Kerry Jenkins Roofing Ltd | Builders | CF72 9SQ | 2022 |
| Kkj Rail Ltd | Builders | CF40 2BE | 2018 |
| Kl Highway Engineering Ltd | Builders | CF39 8UL | 2025 |
| L J Civils Ltd | Builders | CF40 1NH | 2026 |
| L W H Construction Ltd | Builders | CF72 9LA | 2003 |
| La Style Windows and Doors Ltd | Builders | CF40 1LW | 2024 |
| Lbr Groundworks Ltd | Builders | CF39 8TF | 2025 |
| Lear & Sons Contracting Ltd | Builders | CF40 2LQ | 2017 |
| Ln Carpentry and Building Ltd | Builders | CF40 1BF | 2025 |
| Lomax Facility Solutions Ltd | Builders | CF72 9PD | 2024 |
| Lonic Electrical Ltd | Builders | CF40 1DE | 2023 |
| M & P Contractors Wales Ltd | Builders | CF40 2XX | 1999 |
| Matthew O'Keeffe Contracting Ltd | Builders | CF39 9LU | 2017 |
| Medusa Construction Cosmetics Ltd | Builders | CF72 9TL | 2012 |
| Miskin Glazing Ltd | Builders | CF72 8QU | 2026 |
| Mrc Carpentry & Renovations Ltd | Builders | CF72 8JB | 2025 |
| Msf Building Ltd | Builders | CF72 9SJ | 2017 |
| Mytrusteebuilder Ltd | Builders | CF72 9BJ | 2021 |
| Nailed It! Building Services Ltd | Builders | CF72 8NG | 2023 |
| Nautilus Concrete & Flooring Ltd | Builders | CF72 9DZ | 2023 |
| Nautilus Roofing & Exteriors Ltd | Builders | CF72 9DZ | 2013 |
| O & S Groundworks Ltd | Builders | CF72 8EB | 2022 |
| Ourd Holdings Ltd | Builders | CF72 8EF | 2019 |
| Owen Connor Plant Ltd | Builders | CF39 8UH | 2018 |
| P.B.M. Services Ltd | Builders | CF40 1AR | 2019 |
| P.J. Saunders Ltd | Builders | CF72 9DY | 1984 |
| Pembroke Stonemont Ltd | Builders | CF40 1HP | 2016 |
| Pk Brickwork & Construction Ltd | Builders | CF40 1HN | 2023 |
| Porth Ceilings & Interiors Ltd | Builders | CF39 9AD | 2026 |
| Ppm Home Improvements Ltd | Builders | CF72 8AW | 2026 |
| Precision Property & Vehicle Services Ltd | Builders | CF72 9TQ | 2025 |
| Price Huntley & Sons Ltd | Builders | CF40 2BP | 2024 |
| Pro Point Group Ltd | Builders | CF72 4AB | 2025 |
| R&K Building Construction Ltd | Builders | CF72 9FW | 2025 |
| R. Davies Dry Lining Ltd | Builders | CF39 9HU | 2006 |
| Regen Construction Group Ltd | Builders | CF72 9ES | 2023 |
| Resin Bound Maintenance Ltd | Builders | CF72 8NG | 2025 |
| Rhondda Rendering Systems Ltd | Builders | CF40 2QQ | 2020 |
| Rhondda Renovation Ltd | Builders | CF40 1AR | 2023 |
| Rickythebricky Ltd | Builders | CF72 8FE | 2025 |
| Riobree Groundworks Ltd | Builders | CF39 8TF | 2023 |
| Rjd Restoration Ltd | Builders | CF39 0DA | 2022 |
| Rookswood Ltd | Builders | CF72 9UB | 2013 |
| Rormat Ltd | Builders | CF40 1LR | 2015 |
| Rps Building Ltd | Builders | CF40 2PB | 2014 |
| Rrooms Ltd | Builders | CF72 8NG | 2020 |
| Russell & Son'S Builders Ltd | Builders | CF39 9LN | 2018 |
| Rw Thomas Fencing and Groundworks Ltd | Builders | CF72 9JX | 2014 |
| S & D Ceilings Interiors Ltd | Builders | CF39 8TA | 2018 |
| S Jones Upvc Ltd | Builders | CF40 1DA | 2023 |
| Scott Thomas Brickwork Ltd | Builders | CF72 9TU | 2026 |
| Sdc Maintenance Ltd | Builders | CF40 2SX | 2023 |
| Shoots & Roots Landscaping Ltd | Builders | CF72 8NQ | 2019 |
| Site Audit Services Ltd | Builders | CF40 1BE | 2020 |
| Sj Flower the Building Company Ltd | Builders | CF72 9DD | 2011 |
| Sjmr Construction Ltd | Builders | CF40 1DE | 2026 |
| Skill-Fix Interiors Ltd | Builders | CF72 4AL | 2007 |
| South Wales Log Burners Ltd | Builders | CF72 9SD | 2021 |
| Spotbuild64 Ltd | Builders | CF40 2RH | 2026 |
| Steve Baker Plumbing & Heating Ltd | Builders | CF39 8SG | 2019 |
| Stuart Smith Building Solutions Ltd | Builders | CF72 9QE | 2016 |
| T & H Interiors Ltd | Builders | CF39 9TT | 2011 |
| Thomas & Sons Gbm Ltd | Builders | CF40 2DG | 2021 |
| Tk Developments Ltd | Builders | CF72 8NE | 1985 |
| Tucker & Sons Builders Ltd | Builders | CF39 9NN | 2025 |
| Valco Ltd | Builders | CF72 9FG | 2002 |
| Valley Ceilings and Partitions Ltd | Builders | CF40 2BN | 2019 |
| Valley-Clad Ltd | Builders | CF39 0NT | 2018 |
| Vent-Ways Ltd | Builders | CF72 9QH | 2026 |
| Vertice Services Ltd | Builders | CF39 0NT | 2025 |
| W.B.J. Williamstown Builders & Joiners Ltd | Builders | CF39 0BJ | 1975 |