| 21 Moy'S Ltd | Builders | IP14 1US | 2021 |
| 3 Point Property Development Ltd | Builders | IP14 5RY | 2022 |
| 4b Building Ltd | Builders | IP14 1JA | 2021 |
| 7711 Groundworks Ltd | Builders | IP6 9SZ | 2024 |
| A C Brickwork (South East) Ltd | Builders | IP6 0NL | 2013 |
| A J Stiff Construction Ltd | Builders | IP14 1JA | 2017 |
| A W Goddard Fencing Ltd. | Builders | IP6 9SG | 2018 |
| Abacus Building & Surveying Ltd | Builders | IP6 0NL | 2005 |
| Abbey Protective Coatings Ltd | Builders | IP6 0NL | 2017 |
| Ajk Cabling Ltd | Builders | IP14 2PT | 2024 |
| Akenfield Homes Ltd | Builders | IP14 2PS | 2014 |
| Alan John King Ltd | Builders | IP14 3BE | 2011 |
| Alc Carpentry & Construction Ltd | Builders | IP6 9NT | 2020 |
| Alderfields Carpentry & Building Ltd | Builders | IP6 9AB | 2025 |
| All Aspects Landscapes Ltd | Builders | IP14 2JP | 2023 |
| All Star Safety Ltd | Builders | IP6 0HU | 2019 |
| Allbury Maintenance Services Ltd | Builders | IP14 1JA | 2011 |
| Ams Kitchen Fitting Ltd | Builders | IP6 8AS | 2025 |
| Anacondaunit Ltd | Builders | IP6 0HU | 2019 |
| Andaman Engineering Ltd | Builders | IP6 0NL | 2011 |
| Anderson and Scott Holdings Ltd | Builders | IP14 5UL | 2023 |
| Andrew Gray Project Management Ltd | Builders | IP14 2HB | 2024 |
| Anglia Concrete Finishing Ltd | Builders | IP14 6JZ | 2025 |
| Annica Europe Ltd | Builders | IP6 8TN | 2022 |
| Ara Carpentry & Building Ltd | Builders | IP6 0NL | 2021 |
| Arcforms Design & Build Ltd | Builders | IP14 5NN | 2017 |
| Armstrong Property Services (East Anglia) Ltd | Builders | IP6 9HN | 2010 |
| Arrow Property Development Ltd | Builders | IP6 0AJ | 2025 |
| B. Samson Builders Ltd | Builders | IP14 2DD | 2001 |
| Barridge Building Contractors Ltd | Builders | IP6 0NL | 2023 |
| Baxcrown Ltd | Builders | IP14 2RS | 1986 |
| Bb Construction Ltd | Builders | IP6 0JT | 1993 |
| Bco Building & Construction Ltd | Builders | IP14 5TB | 2022 |
| Bearcat Enterprise Ltd | Builders | IP14 1RB | 2025 |
| Bencorr Ltd | Builders | IP6 9PA | 2017 |
| Bespoke Log Cabin Company Ltd | Builders | IP6 9HS | 2000 |
| Bjbc Ltd | Builders | IP14 1JA | 2022 |
| Bkr Construction (Essex) Ltd | Builders | IP6 0NL | 2011 |
| Black Swan Developments East Anglia Ltd | Builders | IP6 0LW | 2012 |
| Blue Rock Project Solutions Ltd | Builders | IP6 9ES | 2020 |
| Bosmere Contracting Ltd | Builders | IP6 8LL | 2020 |
| Brazier Tiling Ltd | Builders | IP14 5NQ | 2016 |
| Breheny Civil Engineering Ltd | Builders | IP6 8NH | 1963 |
| Breheny Group Ltd | Builders | IP6 8NH | 2002 |
| Broadacre Projects Ltd | Builders | IP14 2JY | 2021 |
| Bshc Contractors Ltd | Builders | IP14 1LR | 2025 |
| Buildright Suffolk Ltd | Builders | IP14 1TH | 2014 |
| Burgess Build Group Ltd | Builders | IP6 0FH | 2022 |
| Bw Brickworks & Son Ltd | Builders | IP6 8NF | 2013 |
| C R Catton Building Ltd | Builders | IP14 1JA | 2018 |
| Cadman Flooring Ltd | Builders | IP6 8NZ | 2012 |
| Cadman Plant Ltd | Builders | IP6 9RF | 2007 |
| Calvert Utilities Ltd | Builders | IP6 8TN | 2015 |
| Carpark Surfacing Grids Ltd | Builders | IP6 9AR | 2013 |
| Cascade Pools (East Anglia) Ltd | Builders | IP6 8RN | 2000 |
| Cjg Brickwork Ltd | Builders | IP14 1JA | 2020 |
| Clarke Fencing Ltd | Builders | IP14 2ED | 2005 |
| Code-Arc Welding Services Ltd | Builders | IP14 4DQ | 2022 |
| Colemans Blinds and Shutters Ltd | Builders | IP14 6SL | 2026 |
| Colnesett (East Anglia) Ltd | Builders | IP6 0NL | 2015 |
| Copping Projects Ltd | Builders | IP6 8AS | 2026 |
| Cor Projects Ltd | Builders | IP14 4LD | 2011 |
| Core 10 Group Ltd | Builders | IP6 0NL | 2019 |
| Countryside Home & Garden Ltd | Builders | IP14 1JA | 2012 |
| Cpm (Suffolk) Ltd | Builders | IP14 6LR | 2024 |
| Cts (East) Ltd | Builders | IP6 8TR | 2014 |
| Curve Property Development Ltd | Builders | IP14 1JA | 2020 |
| D A Formwork Ltd | Builders | IP6 0NL | 2018 |
| D Baitan Ltd | Builders | IP14 2DJ | 2019 |
| D M B Brickwork & Construction (Ipswich) Ltd | Builders | IP6 0NL | 2005 |
| Damp and Mould Control Ltd | Builders | IP6 8AS | 2018 |
| Darren Davey Traditional Building Ltd | Builders | IP14 1JA | 2013 |
| Deben Construction Ltd | Builders | IP6 0NL | 2017 |
| Denis Gabriel Construction Ltd | Builders | IP6 0LP | 2023 |
| Deniss Construction Ltd | Builders | IP14 5JD | 2021 |
| Denmar Contracts Ltd | Builders | IP6 8TN | 2014 |
| Denvi Contractors Ltd | Builders | IP14 1JA | 2019 |
| Devereux Aaron Holdings Ltd | Builders | IP6 0NL | 2021 |
| Diamond Outdoor Ltd | Builders | IP14 3FH | 2025 |
| Dino Heating Ltd | Builders | IP14 1XN | 2026 |
| Djelo Ltd | Builders | IP14 1JA | 2013 |
| Doug Phillips Builders Ltd | Builders | IP14 6QP | 2010 |
| Down To Earth Landscapes Ltd | Builders | IP6 0NL | 1987 |
| Dpw Construction Ltd | Builders | IP14 5DA | 2008 |
| Dq Services (East Anglia) Ltd | Builders | IP6 0RU | 2014 |
| Ds3 Ltd | Builders | IP14 5PE | 2020 |
| Elliston Steady & Hawes (Building) Ltd | Builders | IP6 0JT | 1994 |
| Elwent Building Services Ltd | Builders | IP14 1JA | 2019 |
| Emma Plant Hire Ltd | Builders | IP14 1JF | 2020 |
| Energy Environmental Services Ltd | Builders | IP6 8AS | 2008 |
| Errantco Ltd | Builders | IP14 1JA | 2013 |
| Essex Facilities Management Ltd | Builders | IP6 8AS | 2001 |
| Exemplibuild Ltd | Builders | IP6 0LW | 2023 |
| Farrington Building Services Ltd | Builders | IP14 3RR | 2014 |
| Fellbridge Building Services Ltd | Builders | IP14 1JA | 2013 |
| Finborough Hall Services Ltd | Builders | IP14 3BQ | 1994 |
| Four Counties Driveways Ltd | Builders | IP14 1JA | 2003 |
| Fulcher Developments Ltd | Builders | IP6 9DT | 2020 |
| G.E. Locke Builders Ltd | Builders | IP6 0NL | 2002 |
| Gaia Energy (Installations) Ltd | Builders | IP14 5EP | 2024 |
| Gaia Energy Ltd | Builders | IP14 5EP | 2017 |
| Gallagher Property Services Ltd | Builders | IP6 0NL | 2002 |
| Gd Civils & Construction Ltd | Builders | IP14 3NU | 2022 |
| Gdc Build Mid Suffolk Ltd | Builders | IP6 8NT | 2022 |
| Gerbera Contractors Ltd | Builders | IP14 1JA | 2019 |
| Gipping Construction Ltd | Builders | IP6 8JP | 2004 |
| Golfspace Ltd | Builders | IP6 9UN | 2024 |
| Green Building (Suffolk) Ltd | Builders | IP14 6BJ | 2023 |
| Greenoak Contracts Ltd | Builders | IP14 1PU | 2023 |
| H.E. Locke Builders Ltd | Builders | IP6 0NL | 2002 |
| H.J. Green & Sons (Chelmsford) Ltd | Builders | IP6 8AP | 1960 |
| Hamford Mechanical Services Ltd | Builders | IP6 8HS | 2013 |
| Heath Landscapes & Building Services Ltd | Builders | IP6 0NL | 2026 |
| Holmes Plant and Construction Ltd | Builders | IP6 9PA | 2004 |
| Hood Building & Carpentry Ltd | Builders | IP6 9AB | 2015 |
| Imperial Brickwork Ltd | Builders | IP6 0NL | 2017 |
| Insight Technology (Suffolk) Ltd | Builders | IP14 1JA | 2020 |
| Ipswich Accident Repair Centre Ltd | Builders | IP6 0NL | 2001 |
| Ipswich Pro Tiling Ltd | Builders | IP6 0LY | 2019 |
| Isolutions Property Services Ltd | Builders | IP6 0NL | 2021 |
| J C Commissioning Ltd | Builders | IP14 5EP | 2001 |
| J. E. Crooks Ltd | Builders | IP14 2ES | 2005 |
| J.E.D. Insulations Ltd | Builders | IP6 8AS | 2010 |
| Jakeman Solar Ltd | Builders | IP6 0NL | 2013 |
| Jb Carpentry (Ipswich) Ltd | Builders | IP6 8AS | 2017 |
| Joel Whitlock Engineering Solutions Ltd | Builders | IP14 5PQ | 2019 |
| Jolly Good Building & Renovation Ltd | Builders | IP14 1JA | 2007 |
| Jrk Drylining Ltd | Builders | IP6 0NL | 2019 |
| Just Building Services Ltd | Builders | IP14 6DJ | 2023 |
| K&F Brothers Ltd | Builders | IP6 8NA | 2016 |
| Kerry Construction Ltd | Builders | IP6 8BU | 2018 |
| Kevin Hollings Quality Kitchens Ltd | Builders | IP14 4EE | 2013 |
| Kingsfleet Construction Ltd | Builders | IP6 8AS | 2023 |
| Kingwood Anglia Builders Ltd | Builders | IP6 0NL | 1983 |
| Kpm Contracts Ltd | Builders | IP6 9BT | 2005 |
| Larkvale Homes (Gaughton) Ltd | Builders | IP14 3EB | 2017 |
| Larkvale Homes Ltd | Builders | IP14 3EB | 2014 |
| Lewis Grey Ltd | Builders | IP6 0EY | 2018 |
| Lgl Landscaping Ltd | Builders | IP14 5XZ | 2024 |
| Louisgardnercarpentry Ltd | Builders | IP6 0NL | 2022 |
| M&Cv Ltd | Builders | IP14 4RB | 2025 |
| M&W Jay Ltd | Builders | IP14 5QE | 2004 |
| Magnatu Ltd | Builders | IP14 1LE | 2021 |
| Maitland Homes Ltd | Builders | IP6 8NZ | 1996 |
| Maple Building Services (Essex) Ltd | Builders | IP6 8AS | 2012 |
| Maplestone Homes Ltd | Builders | IP6 0AJ | 2016 |
| Marcus Smith Property Developments Ltd | Builders | IP14 1JA | 2019 |
| Mark Meadows Ltd | Builders | IP6 0AJ | 2018 |
| Mbc Electrical Testing Ltd | Builders | IP14 5FH | 2009 |
| Mc Build & Renovations Ltd | Builders | IP14 6AS | 2025 |