| A N Cleveland Ltd | Builders | CO10 9AH | 2015 |
| A Oakenfull Groundworks Ltd | Builders | CO10 2SP | 2003 |
| A&K Building & Plumbing Services Ltd | Builders | CO10 0RJ | 2013 |
| A. & B. Glass Company Ltd | Builders | CO10 2YW | 1981 |
| A1 Fitters Ltd | Builders | IP7 5EL | 2016 |
| Able Paving Ltd | Builders | CO10 7AF | 2006 |
| Academy Building Contracts Ltd | Builders | IP7 5EA | 2005 |
| Ahs Landscapes Ltd | Builders | CO10 5QD | 2017 |
| Alaska Developments Ltd | Builders | IP7 7DN | 2016 |
| Allan C. Gillibrand Ltd | Builders | CO10 2AA | 2005 |
| Allbuild Suffolk Ltd | Builders | IP7 6RD | 2024 |
| Ampmc Ltd | Builders | CO10 1PX | 2024 |
| Andy Pinkus Ltd | Builders | CO10 0SA | 2010 |
| Anglia Province Construction Ltd. | Builders | CO10 9NH | 1997 |
| Arc Building & Construction Ltd | Builders | CO10 2AA | 2019 |
| Arcbrow Developments Ltd | Builders | CO10 2AA | 2025 |
| Ardent Lift Consultancy Ltd. | Builders | IP7 6RD | 2012 |
| Auberies Estate (Property) Ltd | Builders | CO10 7DY | 2013 |
| Avacum Services Ltd | Builders | CO10 2WR | 2023 |
| Axis Commercial Interiors Ltd | Builders | IP7 6RD | 2026 |
| B. Casey Builders Ltd. | Builders | IP7 6RD | 2002 |
| B.E Sealed Ltd | Builders | CO10 7NU | 2022 |
| Balac Lifting Solutions Ltd | Builders | CO10 0YX | 2014 |
| Barrett’S Groundwork & Civil Engineering Ltd | Builders | CO10 8JX | 2024 |
| Barry Drury Investments Ltd | Builders | CO10 9BE | 1987 |
| Barry Drury Properties Ltd | Builders | CO10 9BE | 1987 |
| Base Construction Chemicals Industry UK Ltd | Builders | CO10 0EA | 2022 |
| Belbie Civil Engineering Ltd | Builders | CO10 1LA | 2025 |
| Biodiversity Total Solutions Ltd | Builders | CO10 2AA | 2025 |
| Blackbourne Developments Ltd | Builders | CO10 2AA | 2008 |
| Bloome Construction Ltd | Builders | IP7 6RD | 2016 |
| Bmqlandscaping Ltd | Builders | CO10 0NF | 2024 |
| Bms (En) Ltd | Builders | CO10 0GG | 2018 |
| Brett Valley Builders Ltd | Builders | IP7 7LZ | 2013 |
| Browns Ptp Ltd | Builders | IP7 6RD | 2026 |
| Bryants Building Services Ltd | Builders | CO10 2SP | 2010 |
| Cape Contracts Scaffolding Ltd | Builders | CO10 2SP | 2003 |
| Carnegie Consultancy Ltd | Builders | CO10 2HA | 1986 |
| Castleacre Designs Ltd | Builders | CO10 2XB | 2007 |
| Catt Projects Ltd | Builders | IP7 6RH | 2022 |
| Cavendish Fencing Ltd | Builders | CO10 8BX | 2019 |
| Cg Warner Ltd | Builders | CO10 2SP | 2012 |
| Chelsworth Ltd | Builders | IP7 7HT | 2002 |
| Clarkes 24/7 Ltd | Builders | IP7 5EA | 2014 |
| Collective Interiors Ltd | Builders | CO10 0QX | 2023 |
| Colne Contracts Ltd | Builders | IP7 6RD | 2007 |
| Construction Ibs Ltd | Builders | CO10 0LG | 2023 |
| Cowlin Plant Ltd | Builders | CO10 2SP | 2026 |
| Cutts Cousins Ltd | Builders | CO10 8LN | 2013 |
| D J Slater Ltd | Builders | CO10 7SS | 2012 |
| D W Civil Engineers Ltd | Builders | CO10 0SA | 2015 |
| Day and Thompson Ltd | Builders | CO10 0YU | 2008 |
| Dbf Builders UK Ltd | Builders | IP7 6RD | 2016 |
| Dean Banyard Ltd | Builders | IP7 5HZ | 2008 |
| Dk Brickwork (Sudbury) Ltd | Builders | CO10 0NN | 2016 |
| Dl Building Contractors Ltd | Builders | CO10 1BP | 2026 |
| Dma Property Services Ltd | Builders | CO10 0SA | 2018 |
| Dnps Building Contractors Ltd | Builders | CO10 2SP | 2010 |
| Dpc Building Services Ltd | Builders | CO10 7SS | 2017 |
| Dph Carpentry & Maintenance Ltd | Builders | CO10 9AN | 2014 |
| Drainage Jetting & Surveying Ltd | Builders | CO10 2DP | 2024 |
| Dunwell Pro Ltd | Builders | CO10 0BD | 2023 |
| E.L Walker Construction Ltd | Builders | IP7 6RD | 2024 |
| East To West Sprinkler Systems Ltd | Builders | CO10 0SA | 2012 |
| Edwin'S Installations Ltd | Builders | CO10 1NY | 2011 |
| Electrical Solutions Es Ltd | Builders | IP7 7NE | 2011 |
| Elm Construction Ltd | Builders | IP7 6RD | 2017 |
| Emulsion Sprayer Services Ltd | Builders | CO10 0SA | 2021 |
| Enertech Systems Ltd | Builders | CO10 0BA | 1997 |
| Es Shutters and Awnings Ltd | Builders | CO10 2AA | 2022 |
| Essex Prestige Homes Ltd | Builders | CO10 2SP | 2014 |
| Eurosurfacing Ltd | Builders | CO10 0SA | 2015 |
| Ewart (Special Works) Ltd | Builders | IP7 5EA | 2001 |
| Finada Corp Ltd | Builders | CO10 1UB | 2026 |
| Foxearth Developments Ltd | Builders | CO10 7BQ | 2003 |
| Fuller Brickwork Ltd | Builders | CO10 2AP | 2026 |
| G & T East Anglia Ltd | Builders | IP7 6RL | 2012 |
| G R Smith Building Ltd | Builders | CO10 8QU | 2013 |
| Gainsborough Building Contracts Ltd | Builders | CO10 2QB | 2014 |
| Glemsford Ltd | Builders | CO10 7QX | 2017 |
| Greig & Mills Ltd | Builders | CO10 2AA | 2010 |
| Grimsy Pro Builds Ltd | Builders | CO10 9BW | 2022 |
| H. & A.W.Palmer Ltd | Builders | CO10 9LQ | 1955 |
| H.T. Slater Ltd | Builders | CO10 7SJ | 1974 |
| Happe Contracts Ltd | Builders | CO10 7BQ | 2014 |
| Hasler Hawkins Engineering Services Ltd | Builders | IP7 6RD | 1978 |
| Hawkins Brickwork Services Ltd | Builders | IP7 6RD | 2022 |
| Hay Wain Homes Ltd | Builders | CO10 7LL | 2023 |
| Heritage Roadways Ltd | Builders | CO10 0SA | 2025 |
| Heritage U.K. Ltd | Builders | CO10 8EU | 2018 |
| Hg Passive Fire Ltd | Builders | CO10 2AA | 2023 |
| Hg Trade Ltd | Builders | IP7 6RL | 2012 |
| High Quality Installations Ltd | Builders | CO10 0EU | 2024 |
| Highfields Steel Construction Ltd | Builders | IP7 6RD | 2016 |
| Hori Ltd | Builders | IP7 6RD | 2026 |
| Hurd Carpentry & Building Ltd | Builders | IP7 6PP | 2021 |
| Inov8 Holdings Ltd | Builders | IP7 6RD | 2022 |
| Ipswich Carpet & Flooring Ltd | Builders | CO10 2AA | 2017 |
| Ipswich Floor Sanding Ltd | Builders | CO10 2AA | 2019 |
| Ipswich Plant Services Ltd | Builders | IP7 6RD | 2015 |
| J & P Contracts Ltd | Builders | IP7 6LD | 2013 |
| J J Webb Brickwork Ltd | Builders | CO10 7BQ | 2024 |
| J R L Scaffolding Ltd | Builders | CO10 2AA | 2003 |
| J.S.G Fencing and Gates Ltd | Builders | CO10 7GB | 2022 |
| Jarvis Building Contractors Ltd | Builders | IP7 6RD | 2021 |
| Jc Building & Landscaping Ltd | Builders | CO10 1UG | 2025 |
| Jcma Ltd | Builders | IP7 7NN | 2021 |
| Jenmain Builders Ltd | Builders | CO10 9NF | 1972 |
| Jh Carpentry & Building (Ea) Ltd | Builders | IP7 6RD | 2023 |
| K & A Builders Ltd | Builders | IP7 6RD | 2001 |
| Keystone Fire Solutions Ltd | Builders | IP7 5SE | 2026 |
| Kitchens For Living Ltd | Builders | IP7 6RD | 2018 |
| Lakeside Surfacing Ltd | Builders | CO10 0QF | 2017 |
| Laketons Ltd | Builders | CO10 9JU | 2003 |
| Leaway Developments Ltd | Builders | CO10 0SE | 2019 |
| Letts Swimming Pools Ltd | Builders | IP7 6HP | 1979 |
| Louise Saunders Contractors Ltd | Builders | CO10 0TY | 2023 |
| M & A Property Developments Ltd | Builders | IP7 6RD | 2017 |
| M J Chance Builders Ltd | Builders | CO10 2AA | 2019 |
| M J Pearson Builders Ltd | Builders | CO10 1FA | 2009 |
| M.A.T. Ltd | Builders | CO10 2SP | 2007 |
| M.D. Mills (Building Contractors) Ltd | Builders | CO10 2SP | 2003 |
| Magian Ltd | Builders | IP7 7HW | 2007 |
| Manmoore Steel Construction Ltd | Builders | CO10 2SP | 2024 |
| Mark Bridges Carvers & Gilders Ltd | Builders | IP7 6RD | 2003 |
| Martin & Black Ltd | Builders | IP7 7EE | 2020 |
| Mb Film & Tv Construction Ltd | Builders | CO10 2SP | 2002 |
| Mba Flue Services Ltd | Builders | IP7 5SQ | 2008 |
| Mccarter Construction Ltd | Builders | CO10 2AA | 2018 |
| Meadowsway Hadleigh Ltd | Builders | IP7 6DP | 2024 |
| Melcarpentry&Construction Ltd | Builders | CO10 0XD | 2026 |
| Mervyn Lambert Plant Ltd | Builders | IP7 5EA | 1987 |
| Michael Martin Property Ltd | Builders | IP7 6RD | 2018 |
| Millers Renovation Management Ltd | Builders | CO10 2XG | 2019 |
| Mja-Ps Ltd | Builders | CO10 0PU | 2019 |
| Modern Glaze Ltd | Builders | IP7 5ES | 2024 |
| Mould Zero Ltd | Builders | IP7 6DD | 2025 |
| Msj Group Ltd | Builders | IP7 5EL | 2020 |
| My Green Energy Group Ltd | Builders | IP7 5EA | 2024 |
| Neils Building Services Ltd | Builders | IP7 6GA | 2025 |
| New Start Renovations Ltd | Builders | IP7 6RD | 2020 |
| New2uhomes Ltd | Builders | CO10 2AA | 2013 |
| Nick Bray Geoservices Ltd | Builders | IP7 5JW | 2025 |
| Nidus Ltd | Builders | IP7 6LD | 2008 |
| Njv Enterprises (London) Ltd | Builders | CO10 0BD | 2013 |
| Nordmarken Group Ltd | Builders | IP7 5EL | 2025 |
| Nsf Utilities Ltd | Builders | CO10 7DL | 2014 |
| Oakes Building Services Ltd | Builders | IP7 6RD | 2024 |
| Oakley Developments Trading Ltd | Builders | CO10 0AA | 2026 |
| Oakmore Private Works Ltd | Builders | CO10 8HS | 2026 |