| 1to1 Construction Ltd | Builders | CO4 3FG | 2024 |
| 239 Gre Ltd | Builders | CO4 5AX | 2026 |
| A & K Construction Ltd | Builders | CO4 5PX | 2023 |
| A & P Paving Ltd | Builders | CO4 9YQ | 2018 |
| A & R Blinds Ltd | Builders | CO7 9DP | 2025 |
| A.W. Lifting Ltd | Builders | CO4 0PL | 2011 |
| Abba Consulting Ltd | Builders | CO4 6BT | 2022 |
| Ace Pave and Groundworks Ltd | Builders | CO7 0RN | 2011 |
| Adc Tiling Ltd | Builders | CO4 9ST | 2021 |
| Adds Room Lofts Ltd | Builders | CO4 5NE | 2021 |
| Affordable Renewable Energy UK Ltd | Builders | CO7 7FG | 2023 |
| Alexander James Developments Ltd | Builders | CO7 8QN | 2024 |
| Alk Groundworks Ltd | Builders | CO4 5GG | 2014 |
| Allston and Jones Building Ltd | Builders | CO7 7BY | 2022 |
| Amosp Solutions Ltd | Builders | CO7 9QZ | 2026 |
| Anderson Trade Ltd | Builders | CO4 5WR | 2026 |
| Andy Elms Cm Ltd | Builders | CO4 5WR | 2023 |
| Anglia Green Construction Ltd | Builders | CO4 3UP | 2007 |
| Apache Landscapes and Building Ltd | Builders | CO4 0BW | 2026 |
| Apw Tm Solutions Ltd | Builders | CO7 7FD | 2016 |
| Aspire Property Solutions Ltd | Builders | CO7 8PN | 2006 |
| Aylott Construction Services Ltd | Builders | CO7 7GB | 2010 |
| B Ut Construction Company Ltd | Builders | CO4 3AG | 2024 |
| Bakers Lofts Ltd | Builders | CO7 7BY | 2018 |
| Bardol Construction Ltd | Builders | CO7 7GE | 2019 |
| Bartondormer Ltd | Builders | CO4 5WR | 2021 |
| Bb Cabling Ltd | Builders | CO7 7BY | 2024 |
| Beale'S Property Maintenance Ltd | Builders | CO7 8PB | 2003 |
| Bellwest Ltd | Builders | CO4 9YQ | 2011 |
| Ben Wood Contracts Ltd | Builders | CO7 9AF | 2023 |
| Bewers Ltd | Builders | CO4 5YQ | 2023 |
| Bidgood Consultancy Ltd | Builders | CO7 8PS | 2026 |
| Birca Construction Group Ltd | Builders | CO4 6BY | 2015 |
| Bk Building Contractors Ltd | Builders | CO7 0FH | 2022 |
| Blizzco Developers Ltd | Builders | CO4 0BX | 2012 |
| Blmcontractors Ltd | Builders | CO4 9ST | 2015 |
| Bmg Steel Ltd | Builders | CO4 5NE | 2024 |
| Brennan Ltd | Builders | CO4 5YQ | 1993 |
| Britau Ltd | Builders | CO7 0EH | 2008 |
| Browns Building Developers Ltd | Builders | CO7 7UL | 2025 |
| Browns Construction & Groundworks Ltd | Builders | CO7 7UL | 2024 |
| Bruce B Ltd | Builders | CO7 7EA | 2006 |
| Bursuc Construction Ltd | Builders | CO4 3QF | 2025 |
| Buxton Flow Screeds Ltd | Builders | CO7 7FD | 2018 |
| Byers Cabling Solutions Ltd | Builders | CO7 7BY | 2025 |
| C & K Developments Ltd | Builders | CO7 9LB | 2002 |
| C Harrison Management Ltd | Builders | CO4 5NE | 2019 |
| C&K (Contracts) Ltd | Builders | CO7 9LB | 2015 |
| Cadman Cranes Ltd | Builders | CO4 9QX | 2004 |
| Cannon Preservation Ltd | Builders | CO4 3DE | 2015 |
| Capital Screeding Ltd | Builders | CO7 7FD | 2022 |
| Cb Installations (Halstead) Ltd | Builders | CO4 5NE | 2022 |
| Cbr (Essex) Ltd | Builders | CO4 4TX | 2007 |
| Cc Construction & Groundworks Ltd | Builders | CO7 0JZ | 2012 |
| Cdm Insulations Ltd | Builders | CO7 7BY | 2007 |
| Central Reservations UK Ltd | Builders | CO4 3YG | 2026 |
| Chapel Developments (East Anglia) Ltd | Builders | CO4 9YQ | 2003 |
| Cl Construction Ltd | Builders | CO4 3JB | 2021 |
| Clau Fixing Ltd | Builders | CO4 3LJ | 2019 |
| Clermont Place Management Company Ltd. | Builders | CO7 0FH | 2015 |
| Co Brickwork Ltd | Builders | CO7 0JD | 2026 |
| Colchester Timber & Damp Ltd | Builders | CO4 5LQ | 2014 |
| Colchesterbrickwork Ltd | Builders | CO7 0LL | 2026 |
| Collison Brickwork Ltd | Builders | CO7 7BY | 2014 |
| Commissioning Management Ltd | Builders | CO4 9YQ | 1983 |
| Construction & Shopfitting Ltd | Builders | CO4 9AS | 1998 |
| Construction Imc Ltd | Builders | CO4 9AD | 2026 |
| Coram Property Services Ltd | Builders | CO7 7BY | 2011 |
| Coreline Interiors Ltd | Builders | CO7 7FD | 2024 |
| Cornerstone Exterior Services Ltd | Builders | CO7 9SQ | 2026 |
| Cornhill Property Services (East Anglia) Ltd | Builders | CO7 7BY | 2020 |
| County Garage Conversions Ltd | Builders | CO4 5WR | 2009 |
| Coverdale Specialist Flooring Ltd | Builders | CO7 9HG | 2020 |
| Crosby & Barnard Properties Ltd | Builders | CO4 5WR | 2026 |
| Crosbys Building Contractors Ltd | Builders | CO4 5WR | 2016 |
| D Bruce Developments Ltd | Builders | CO4 5WR | 2015 |
| D Curtis and Sons Ltd | Builders | CO4 0NY | 2026 |
| D G P Building & Renovations Ltd | Builders | CO4 5WR | 2009 |
| D O'Hare Construction Ltd | Builders | CO4 5WR | 2015 |
| Daniel Claudia Construction Ltd | Builders | CO4 3GA | 2022 |
| Daniel Nielsen Ltd | Builders | CO4 5PX | 2018 |
| Danymaxhome Ltd | Builders | CO4 5NF | 2022 |
| Daybar Ltd | Builders | CO7 7EA | 2021 |
| Daytel Ltd | Builders | CO4 0HU | 1999 |
| Dbl Contracts Ltd | Builders | CO7 8AF | 2016 |
| Designer Windows and Building Services Ltd | Builders | CO4 6DL | 2026 |
| Devon Interiors & Contractors Kitchens Ltd | Builders | CO4 5DU | 2024 |
| Dkdo Solutions Ltd | Builders | CO4 0BP | 2026 |
| Don'T Take A Fence Ltd | Builders | CO7 7EA | 2023 |
| Drag Iancu Ltd | Builders | CO4 5NE | 2019 |
| Drylining Material Loaders Ltd | Builders | CO4 9YQ | 2021 |
| E&T Property Solution Ltd | Builders | CO4 3RL | 2026 |
| E.A. Brickwork Ltd | Builders | CO4 3DS | 2014 |
| Eastern Sports Surfaces Ltd | Builders | CO7 9LA | 2016 |
| Ecosmart Property Solutions Ltd | Builders | CO4 3BP | 2025 |
| Edmund Dobrowolski Ltd | Builders | CO4 5YQ | 2003 |
| Elderbrook Homes Ltd | Builders | CO7 7FD | 2023 |
| Elmbury (City) Ltd | Builders | CO4 9YQ | 1992 |
| Essex and Suffolk Building Solutions Ltd | Builders | CO7 0NA | 2026 |
| Estuary Ec Contracts Ltd | Builders | CO7 9NW | 2022 |
| Exterior Improvements Ltd | Builders | CO7 8LS | 2017 |
| Fast Precast Ltd | Builders | CO4 5ST | 2025 |
| Fdy Building Services Ltd | Builders | CO4 3TZ | 2019 |
| Fj Interiors Ltd | Builders | CO4 5JD | 2026 |
| Formica Shop Fitting Ltd | Builders | CO4 9TR | 2013 |
| Francis Access Hire Ltd | Builders | CO7 8LG | 2017 |
| Frinton Tarmacadam and Paving Ltd | Builders | CO7 6ET | 1997 |
| Fv Conservatories & Windows Ltd | Builders | CO7 7EA | 2006 |
| G & K Scaffolding & Roofing Ltd | Builders | CO7 8JL | 2011 |
| G Lattimore Home Improvements Ltd | Builders | CO7 7BY | 2026 |
| Gage Projects Ltd | Builders | CO4 9YQ | 2017 |
| Gary Jobber Woodworking & Construction Ltd | Builders | CO7 9AH | 2013 |
| Goodwin & Gould Ltd | Builders | CO7 0NL | 2011 |
| Great White Solutions Ltd | Builders | CO4 6FA | 2026 |
| Green Renovations (Essex) Ltd | Builders | CO4 5PX | 2010 |
| Greenleaf Building & Landscaping Services Ltd | Builders | CO4 5GG | 2021 |
| Greystage Ltd | Builders | CO4 5NE | 2019 |
| Griggs Builders Ltd | Builders | CO7 0PL | 2017 |
| Gsd Brickwork Specialists Ltd | Builders | CO4 5WR | 2020 |
| Gunnett Digger Hire Ltd | Builders | CO4 5NE | 2015 |
| Gypxpert Ltd | Builders | CO4 6EG | 2026 |
| Hall Brothers of Colchester Ltd | Builders | CO7 6TU | 1966 |
| Handley Installations Ltd | Builders | CO7 7TL | 2017 |
| Handy Sam Ltd | Builders | CO4 5WR | 2026 |
| Harding Project Solutions Ltd | Builders | CO7 7BY | 2013 |
| Harpait Design & Build Ltd | Builders | CO4 5LR | 2018 |
| Henry Hall Build Ltd | Builders | CO7 7BY | 2017 |
| Heritage Building Conservation Services Ltd | Builders | CO4 5WR | 2017 |
| Hill Piling Ltd | Builders | CO7 7BY | 1996 |
| Hmkeys Ltd | Builders | CO4 9XS | 2025 |
| Holmes Groundwork and Construction Ltd | Builders | CO7 9QE | 2021 |
| Homereno UK Ltd | Builders | CO7 7EA | 2025 |
| Horizon Construction (London) Ltd | Builders | CO4 9QR | 2016 |
| Housevale Ltd | Builders | CO7 0JX | 2026 |
| Howe Homes (East Anglia) Ltd | Builders | CO4 6DE | 2022 |
| Ideal Carpentry Ltd | Builders | CO7 7EA | 2015 |
| Imperial Homes Group (Essex) Ltd | Builders | CO7 7FD | 2020 |
| Ince Building & Carpentry Ltd | Builders | CO4 5NE | 2021 |
| Inova (UK) Ltd | Builders | CO4 5PT | 1998 |
| J G Wright Thermal Services Ltd | Builders | CO4 5NE | 2021 |
| J Tipple Holdings Ltd | Builders | CO4 5HT | 2019 |
| Jem Brickwork (Essex) Ltd | Builders | CO4 5FU | 2021 |
| Jlb Group Ltd | Builders | CO4 5YQ | 2024 |
| Jm Construction and Building Ltd | Builders | CO7 7FD | 2022 |
| Jml Construction Ltd | Builders | CO4 0PG | 2025 |
| Jovis Ltd | Builders | CO7 9JD | 2004 |
| Jps Building Developments Ltd | Builders | CO7 7BY | 2024 |
| Justin Utilities Ltd | Builders | CO4 3NT | 2017 |
| Jw Smart Company Ltd | Builders | CO4 6BW | 2021 |
| K and J Construction Ltd | Builders | CO7 8SH | 2019 |