| 3tc (Construction) Ltd | Builders | IP1 4JJ | 2026 |
| 44 Construction 1 Ltd | Builders | IP1 1RJ | 2019 |
| 7711 Groundworks Ltd | Builders | IP6 9SZ | 2024 |
| A C Brickwork (South East) Ltd | Builders | IP6 0NL | 2013 |
| A G Landscaping Services Ltd | Builders | IP1 4JR | 2017 |
| A W Goddard Fencing Ltd. | Builders | IP6 9SG | 2018 |
| A&G Developers Private Ltd | Builders | IP1 1SS | 2020 |
| Aa Carpentry and Maintenance Ltd | Builders | IP1 5JD | 2010 |
| Abbey Protective Coatings Ltd | Builders | IP6 0NL | 2017 |
| Abstract Pcm Ltd | Builders | IP1 5DF | 2019 |
| Acuro Snagging Ltd | Builders | IP1 1RJ | 2022 |
| Agb Builders (Felixstowe) Ltd | Builders | IP1 2HA | 2013 |
| Ajw Maintenance Ltd | Builders | IP1 4JJ | 2026 |
| Alc Carpentry & Construction Ltd | Builders | IP6 9NT | 2020 |
| Alderfields Carpentry & Building Ltd | Builders | IP6 9AB | 2025 |
| Alfie Property Maintenance Ltd | Builders | IP1 4JJ | 2025 |
| All Star Safety Ltd | Builders | IP6 0HU | 2019 |
| Alpha Multi Utilities Ltd | Builders | IP1 4AF | 2018 |
| Ams Kitchen Fitting Ltd | Builders | IP6 8AS | 2025 |
| Anacondaunit Ltd | Builders | IP6 0HU | 2019 |
| Andaman Engineering Ltd | Builders | IP6 0NL | 2011 |
| Anglia Contractors Ltd | Builders | IP1 4JJ | 2017 |
| Annica Europe Ltd | Builders | IP6 8TN | 2022 |
| Antzworkers Ltd | Builders | IP1 1RJ | 2017 |
| Ara Carpentry & Building Ltd | Builders | IP6 0NL | 2021 |
| Armstrong Property Services (East Anglia) Ltd | Builders | IP6 9HN | 2010 |
| Arrow Property Development Ltd | Builders | IP6 0AJ | 2025 |
| Aspire Green Homes Ltd | Builders | IP1 1RJ | 2024 |
| Avi Construction Ltd | Builders | IP1 1RJ | 2019 |
| Avoda Stein Ltd | Builders | IP1 4HD | 2017 |
| Axi Drywall Ltd | Builders | IP1 4HH | 2026 |
| Barber Construction Group Ltd | Builders | IP1 4LJ | 2024 |
| Barnett and Son Ltd | Builders | IP1 6BH | 2008 |
| Baronas Construction Ltd | Builders | IP1 1EZ | 2023 |
| Barridge Building Contractors Ltd | Builders | IP6 0NL | 2023 |
| Bartchipperdoctor Ltd | Builders | IP1 4EN | 2021 |
| Bartram Building Services Ltd | Builders | IP1 2HA | 2024 |
| Bb Construction Ltd | Builders | IP6 0JT | 1993 |
| Beau Building Consultancy Ltd | Builders | IP1 3LG | 2026 |
| Belstead Carpentry & Decorating Ltd | Builders | IP1 4JJ | 2015 |
| Bencorr Ltd | Builders | IP6 9PA | 2017 |
| Bespoke Construction & Electrical Ltd | Builders | IP1 1RJ | 2026 |
| Bespoke Log Cabin Company Ltd | Builders | IP6 9HS | 2000 |
| Biantex Ltd | Builders | IP1 1RJ | 2021 |
| Bingham Properties & Construction Ltd | Builders | IP1 4JJ | 2026 |
| 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 |
| Bms (East Anglia) Ltd | Builders | IP1 1RJ | 2005 |
| Bosmere Contracting Ltd | Builders | IP6 8LL | 2020 |
| Brc Residential Ltd | Builders | IP1 4JJ | 2015 |
| Breheny Civil Engineering Ltd | Builders | IP6 8NH | 1963 |
| Breheny Group Ltd | Builders | IP6 8NH | 2002 |
| Brisko Scaffolding Ltd | Builders | IP1 5AN | 1996 |
| Buildwell Construction (East Anglia) Ltd | Builders | IP1 4JR | 2003 |
| Burgess Build Group Ltd | Builders | IP6 0FH | 2022 |
| Bw Brickworks & Son Ltd | Builders | IP6 8NF | 2013 |
| C Macken Building Contractors Ltd | Builders | IP1 6DU | 2022 |
| 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 |
| Catherine Aldous Design Ltd | Builders | IP1 4LS | 2003 |
| Catiusablack Ltd | Builders | IP1 3JN | 2024 |
| Cecconi Construction Ltd | Builders | IP1 2HA | 2016 |
| Christchurch Group Ltd | Builders | IP1 3BX | 2025 |
| Cleanhse Services Ltd | Builders | IP1 2PP | 2017 |
| Cleaning Beny Ltd | Builders | IP1 4DB | 2024 |
| Cma Garden Solution Ltd | Builders | IP1 2LF | 2017 |
| Colnesett (East Anglia) Ltd | Builders | IP6 0NL | 2015 |
| Conspicuous Interiors Ltd | Builders | IP1 2EX | 2018 |
| Construction Mechanical Engineering Ltd | Builders | IP1 1RJ | 2015 |
| Copping Projects Ltd | Builders | IP6 8AS | 2026 |
| Core 10 Group Ltd | Builders | IP6 0NL | 2019 |
| Cpe 2007 Ltd | Builders | IP1 3PN | 2007 |
| Creative Building Services (Suffolk) Ltd | Builders | IP1 5NH | 2022 |
| Creative Home-Works Ltd | Builders | IP1 3RB | 2012 |
| Crown Building Group Ltd | Builders | IP1 2QA | 2026 |
| Cts (East) Ltd | Builders | IP6 8TR | 2014 |
| D & J H Homes Ltd | Builders | IP1 2HA | 2014 |
| D A Formwork Ltd | Builders | IP6 0NL | 2018 |
| D C Renovations Ltd | Builders | IP1 4JR | 2019 |
| D M B Brickwork & Construction (Ipswich) Ltd | Builders | IP6 0NL | 2005 |
| D&A Pro Ltd | Builders | IP1 1RJ | 2024 |
| Damp and Mould Control Ltd | Builders | IP6 8AS | 2018 |
| Dance & Dean Ltd | Builders | IP1 3LG | 2000 |
| Dayger Interior Solutions Ltd | Builders | IP1 1RJ | 2026 |
| Dc Home Solutions Ltd | Builders | IP1 1RJ | 2026 |
| De Abreu & De Pina Solutions Ltd | Builders | IP1 1RJ | 2023 |
| Deben Construction Ltd | Builders | IP6 0NL | 2017 |
| Denis Gabriel Construction Ltd | Builders | IP6 0LP | 2023 |
| Denmar Contracts Ltd | Builders | IP6 8TN | 2014 |
| Devereux Aaron Holdings Ltd | Builders | IP6 0NL | 2021 |
| Devine Improvements Ltd | Builders | IP1 3BX | 2023 |
| Dnl Construction Rml Ltd | Builders | IP1 2HB | 2026 |
| Down To Earth Landscapes Ltd | Builders | IP6 0NL | 1987 |
| Dq Services (East Anglia) Ltd | Builders | IP6 0RU | 2014 |
| Dreamscape Development Ltd | Builders | IP1 3SZ | 2024 |
| Ds Solar Maintenance Ltd | Builders | IP1 6NB | 2023 |
| Dt Home Improvements Ltd | Builders | IP1 4JR | 2021 |
| E&I Drywall Ltd | Builders | IP1 2EY | 2020 |
| Eastwend Property Developments Ltd | Builders | IP1 2HA | 2008 |
| Elevate Brickwork Ltd | Builders | IP1 1RJ | 2024 |
| Eliade Ltd | Builders | IP1 4AX | 2017 |
| Elite Building Projects Ltd | Builders | IP1 4JJ | 2016 |
| Elliston Steady & Hawes (Building) Ltd | Builders | IP6 0JT | 1994 |
| Emp Drainage Ltd | Builders | IP1 4JR | 2017 |
| Energy Environmental Services Ltd | Builders | IP6 8AS | 2008 |
| Ernis Ltd | Builders | IP1 5HF | 2025 |
| Espana Construction Group Ltd | Builders | IP1 5PN | 2026 |
| Essex Facilities Management Ltd | Builders | IP6 8AS | 2001 |
| Esture Group Ltd | Builders | IP1 6LH | 2025 |
| Evolve Services Group Ltd | Builders | IP1 2HA | 2016 |
| Exemplibuild Ltd | Builders | IP6 0LW | 2023 |
| Fabiola-Florentina Nenica Ltd | Builders | IP1 2HB | 2025 |
| Far Design & Build Ltd | Builders | IP1 2JU | 2025 |
| Felix Equestrian Ltd | Builders | IP1 1RJ | 2023 |
| Fellows Tilers Ltd | Builders | IP1 2LD | 2023 |
| Firesite (Eastern) Ltd | Builders | IP1 5AU | 1991 |
| Forever Home Transformations Ltd | Builders | IP1 4JJ | 2026 |
| Foundation Properties (Construction) Ltd | Builders | IP1 6LG | 2014 |
| Fulcher Developments Ltd | Builders | IP6 9DT | 2020 |
| Fulcrum Engineering & Technical Ltd | Builders | IP1 4JJ | 2015 |
| Further Design & Management Ltd | Builders | IP1 2HF | 2021 |
| G J Garner & Sons Builders Ltd | Builders | IP1 4JJ | 2012 |
| G. M. Saunders Builders Ltd | Builders | IP1 4JR | 2004 |
| G.B.S. Builders (Ipswich) Ltd | Builders | IP1 5AP | 2004 |
| G.E. Locke Builders Ltd | Builders | IP6 0NL | 2002 |
| Gallagher Property Services Ltd | Builders | IP6 0NL | 2002 |
| Gce Builders Ltd | Builders | IP1 4JJ | 2023 |
| Gdc Build Mid Suffolk Ltd | Builders | IP6 8NT | 2022 |
| Gipping Construction Ltd | Builders | IP6 8JP | 2004 |
| Goldsmith and Buckle Ltd | Builders | IP1 4JJ | 2006 |
| Golfspace Ltd | Builders | IP6 9UN | 2024 |
| Gts & Sons Ltd | Builders | IP1 4JJ | 2013 |
| 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 |
| Hapi Build Ltd | Builders | IP1 5BS | 2021 |
| Heath Landscapes & Building Services Ltd | Builders | IP6 0NL | 2026 |
| Himalayan Engineering Ltd | Builders | IP1 1AN | 2025 |
| Hmj Homes Ltd | Builders | IP1 2HA | 2021 |
| Holmes Plant and Construction Ltd | Builders | IP6 9PA | 2004 |
| Hood Building & Carpentry Ltd | Builders | IP6 9AB | 2015 |
| House Life Ltd | Builders | IP1 1RJ | 2018 |
| Ic Groundwork Ltd | Builders | IP1 4AF | 2023 |
| Ideal Industrial Doors Ltd | Builders | IP1 4JJ | 2025 |
| Imperial Brickwork Ltd | Builders | IP6 0NL | 2017 |
| Ionut Alexandru Ltd | Builders | IP1 4EU | 2025 |