| 360 Upkeep Ltd | Builders | DH6 1PA | 2025 |
| A C Rowntree Ltd | Builders | DH6 1PA | 2024 |
| A Lee Construction Services Ltd | Builders | DH6 1PA | 2026 |
| A Williams Groundworks Ltd | Builders | DH6 1PA | 2020 |
| A&Hbrickwork Ltd | Builders | SR7 0JQ | 2024 |
| A&K Consultancy (Ne) Ltd | Builders | DH6 1PA | 2026 |
| Abbotside Construction Ltd | Builders | DH6 1PA | 2026 |
| Acquire Construction Ltd | Builders | DH6 1PA | 2022 |
| Andrew Hardy Construction Ltd | Builders | DH6 4ER | 2020 |
| Ao Building & Development Ltd | Builders | DH6 1PA | 2020 |
| Awm Groundworks Ltd | Builders | DH6 4LX | 2024 |
| Bamma Construction Ltd | Builders | DH6 4LT | 2020 |
| Barkers Brickwork Ltd | Builders | DH6 1PA | 2026 |
| Bethel Builds Ltd | Builders | DH6 3PT | 2024 |
| Brenton Commercial Ltd | Builders | DH6 5NP | 2024 |
| Buffalo Power Services Ltd | Builders | SR7 0NB | 2003 |
| Bulmer Construction Ltd | Builders | DH6 4PE | 2017 |
| C&C Groundworks/Construction Ltd | Builders | DH6 1PA | 2021 |
| Cdr Furniture Ltd | Builders | DH6 5FL | 2025 |
| Cms (North East) Ltd | Builders | SR7 0JQ | 2020 |
| Coast 2 Coast Builders Ltd | Builders | SR7 0BY | 2026 |
| Corelift Mechanical Solutions Ltd | Builders | DH6 2QZ | 2026 |
| Coughtrey Construction Ltd | Builders | DH6 1JE | 2018 |
| Coxhoe Groundworks Durham Drainage Ltd | Builders | DH6 4LH | 2010 |
| Cpy Construction Ne Ltd | Builders | DH6 4LY | 2024 |
| Cr Contracts Ltd | Builders | DH6 2LG | 2015 |
| Cx Traffic Management Ltd | Builders | DH6 1PA | 2021 |
| D & T Stone Masonry Ltd | Builders | DH6 4JL | 2023 |
| D&D Construction Ne Ltd | Builders | DH6 1PA | 2024 |
| D.C. Construction (Ne) Ltd | Builders | DH6 1PA | 2019 |
| Dalion Construction Ltd | Builders | DH6 4LA | 2026 |
| David Coulson Construction Ltd | Builders | DH6 4NL | 2008 |
| Dh Construction (Ne) Ltd | Builders | DH6 1PA | 2019 |
| Djl Groundworks Ltd | Builders | DH6 1PA | 2022 |
| Dolan'S Paving & Building Ltd | Builders | DH6 2AW | 2019 |
| Drilcorp Ltd | Builders | SR7 8SW | 1992 |
| Driveways and Patios North East Ltd | Builders | SR7 8QR | 2022 |
| Dst Shutters Ltd | Builders | SR7 8ED | 2013 |
| Dunelm Homes Ltd | Builders | DH6 5PF | 1995 |
| Dunelm National Projects Ltd | Builders | DH6 5PF | 2010 |
| Durham Damp Proofing Ltd. | Builders | DH6 3LG | 2022 |
| E & A Brickwork Ne Ltd | Builders | DH6 2JF | 2023 |
| E.J.W Utilities Ltd | Builders | DH6 4BT | 2024 |
| Eden Homes (Durham) Ltd | Builders | DH6 2SY | 2015 |
| Eleganz Constructions Ltd | Builders | SR7 8DU | 2016 |
| Empire Arts Ltd | Builders | SR7 8PD | 2019 |
| Epr Contracts Ltd | Builders | DH6 1PA | 2018 |
| Eps Joinery Ltd | Builders | DH6 1PA | 2025 |
| Esh Construction Ltd | Builders | DH6 5PF | 1990 |
| Esh Homes Ltd | Builders | DH6 5PF | 2014 |
| Eu Roads Ltd | Builders | DH6 3FA | 2026 |
| Executive Country Homes Ltd | Builders | DH6 2TA | 2006 |
| F A M Building Services Ltd | Builders | DH6 1PA | 2026 |
| Fallowfield Developments Ltd | Builders | SR7 7PS | 2021 |
| Fjm Groundworks Ltd | Builders | DH6 1PA | 2025 |
| Fr Surfacing Ltd | Builders | DH6 1QY | 2021 |
| G & L Groundworks Ltd | Builders | DH6 1PA | 2020 |
| Gl Property Renovations Ltd | Builders | DH6 1PA | 2024 |
| Go North Construction Ltd | Builders | DH6 4FG | 2026 |
| Green Sunrise Solutions Ltd | Builders | SR7 7PR | 2025 |
| Green’S Groundwork'S Ltd | Builders | DH6 1PA | 2025 |
| Grg Groundworks Ltd | Builders | DH6 3LL | 2022 |
| Gtr Lifting Ltd | Builders | DH6 4RD | 2025 |
| Haydon Homes Ltd | Builders | SR7 8PR | 2006 |
| Hfr Paving Ltd | Builders | DH6 3LD | 2024 |
| Hgd Groundworks and Garden Renovations Ltd | Builders | DH6 5EY | 2015 |
| Holme Hill Improvements Ltd | Builders | DH6 2AL | 2013 |
| Hope Building & Joinery Ltd | Builders | DH6 4RS | 2002 |
| Hsl Homes Ltd | Builders | DH6 5HW | 2013 |
| Hunt Trading Co Ltd | Builders | DH6 2HT | 2023 |
| Hv Connect and Pipelines Ltd | Builders | DH6 1HF | 2025 |
| Ideal Fencing Solutions Ltd | Builders | DH6 1PA | 2026 |
| Irts Property Maintenance Ltd | Builders | DH6 3NP | 2019 |
| J Crowe Brickwork Ltd | Builders | DH6 1PA | 2026 |
| J Rowntree Ltd | Builders | DH6 1PA | 2024 |
| J&L Groundworks Ne Ltd | Builders | DH6 1PA | 2026 |
| J. Philippe Group Ltd | Builders | DH6 4QX | 2026 |
| J.T.C. Reinforcements (North East) Ltd | Builders | SR7 7EF | 2021 |
| Jacks Sim Rooms Ltd | Builders | DH6 2YQ | 2025 |
| Jlh Developments Ltd | Builders | SR7 7EF | 2008 |
| Jm Solutions (North East) Ltd | Builders | DH6 2SP | 2022 |
| Jt Wind/Rope Services Ltd | Builders | SR7 7WW | 2026 |
| K&C Construction and Development Ltd | Builders | DH6 4NH | 2026 |
| K&C Render & Damp Proofing Specialists Ltd | Builders | DH6 2AG | 2018 |
| Kevin Crabtree Builders Ltd | Builders | SR7 8ED | 2013 |
| Ks Brickwork Ne Ltd | Builders | SR7 8ET | 2020 |
| Ksh (North East) Ltd | Builders | SR7 7QF | 2024 |
| L & G Durham Groundworks Ltd | Builders | DH6 1PA | 2026 |
| L&S Brickwork North East Ltd | Builders | SR7 7PR | 2021 |
| L.Brunning Inspection Services Ltd | Builders | SR7 7DG | 2022 |
| Lbj Civils Ltd | Builders | DH6 5AH | 2025 |
| Lc Renewables Ltd | Builders | DH6 3AX | 2024 |
| Light and Dry Ltd | Builders | DH6 2SE | 2015 |
| Lm Brickworks (Ne) Ltd | Builders | DH6 1PA | 2021 |
| Lomond Construction Services Ltd | Builders | DH6 1PA | 2026 |
| Lonbar Construction & Maintenance Ltd | Builders | DH6 5FU | 2022 |
| Lowen Construction Ltd | Builders | DH6 2EF | 2016 |
| Lsl Construction Ltd | Builders | DH6 4AN | 2020 |
| Lush Homes Ltd. | Builders | DH6 4QP | 2016 |
| M J Plaster & Building Contractor & Sons Ltd | Builders | DH6 2AG | 2016 |
| Mackenzie Building Contractors Ltd | Builders | DH6 4DX | 1980 |
| Megoran Tiling Ltd | Builders | DH6 1HG | 2023 |
| Mjb Brickwork Ltd | Builders | DH6 2LN | 2024 |
| Mn Brickwork Ltd | Builders | SR7 7QH | 2020 |
| Moga Daniel Ltd | Builders | SR7 8DS | 2021 |
| Morillo Building Services Ltd | Builders | DH6 2DW | 2017 |
| Mortar-4-U Ltd | Builders | SR7 0GA | 2020 |
| Mpmgroundworks Ltd | Builders | DH6 4LY | 2026 |
| Msp Construction and Plant Hire Ltd | Builders | DH6 4BW | 2022 |
| Nattress Property Ltd | Builders | DH6 3AU | 2006 |
| Neasham Road Jv Ltd | Builders | DH6 5PF | 2020 |
| North Project Management Ltd | Builders | DH6 1PA | 2024 |
| Nvpa Ltd | Builders | DH6 5FJ | 2024 |
| Office Glass Partitions Northern Ltd | Builders | SR7 8SL | 2015 |
| Paj Groundworks Ltd | Builders | DH6 1PA | 2026 |
| Park Castle Homes Ltd | Builders | SR7 0HR | 2025 |
| Ph Roads Ltd | Builders | DH6 2LR | 2026 |
| Prestige Exclusive Homes Ltd | Builders | DH6 5PF | 2009 |
| R Fox Construction Ltd | Builders | DH6 1PA | 2025 |
| Retroflo Ltd | Builders | SR7 0PS | 2007 |
| Rga Civils Ltd | Builders | DH6 4NN | 2023 |
| Rigtec Site Services Ltd | Builders | DH6 4LS | 2023 |
| Roadsafe Traffic Management (North West) Ltd | Builders | DH6 1PA | 2024 |
| Rps (Ne) Ltd | Builders | SR7 7TT | 2025 |
| Rws Renewables Ltd | Builders | DH6 2PD | 2026 |
| S An L Paving Ltd | Builders | DH6 2LF | 2018 |
| S&W Coach & Country Ltd | Builders | DH6 2RU | 2026 |
| S.W. Welding & Inspection Services Ltd | Builders | DH6 1PA | 2016 |
| Scale Construction Ltd | Builders | DH6 1PA | 2024 |
| Shark Construction (Ne) Ltd | Builders | DH6 1PA | 2021 |
| Sld Planning Ltd | Builders | SR7 8QZ | 2016 |
| Sls Home Improvements Ltd | Builders | DH6 2LD | 2022 |
| Snowdon & Wallace Groundworks Ltd | Builders | DH6 2SP | 2019 |
| Somers Rope Access Solutions Ltd | Builders | DH6 5PL | 2012 |
| St. Astier Ltd | Builders | SR7 0PS | 2003 |
| Stephen Easten Building Ltd | Builders | DH6 5PF | 2006 |
| Stuart Bradley Plant Hire Ltd | Builders | DH6 2PZ | 2009 |
| Subport (Durham) Ltd | Builders | SR7 7WQ | 2024 |
| Substruct Civils Ltd | Builders | DH6 4SX | 2022 |
| Swb Construction Ne Ltd | Builders | DH6 1PA | 2019 |
| T&F Drywall Specialists Ltd | Builders | DH6 3DF | 2020 |
| Tc Construction North East Ltd | Builders | DH6 4RF | 2019 |
| Tempest Rope Access Solutions Ltd | Builders | SR7 8LD | 2023 |
| The Extendables Group Ltd | Builders | DH6 4JL | 2024 |
| The Extendables Ltd | Builders | DH6 4JL | 2019 |
| The Great British Ground Screw Company Ltd | Builders | DH6 5AD | 2013 |
| Timec 1334 Ltd | Builders | DH6 5PF | 2011 |
| Towers Engineering Design Services Ltd | Builders | DH6 2RZ | 1988 |
| Tpw Home Improvements Ltd | Builders | DH6 1PA | 2026 |
| Tursdale Business Park Ltd | Builders | DH6 5PF | 1999 |