| 203 West Ltd | Builders | PO16 0EN | 2026 |
| 24-7 Ready Plumbing & Construction Ltd | Builders | PO15 7PR | 2023 |
| 365 Carpentry Ltd | Builders | PO16 8SS | 2021 |
| 3xc Group Ltd | Builders | PO16 9QD | 2025 |
| 4site Logistics Ltd | Builders | PO15 5TD | 2025 |
| A & S Dry Lining Ltd | Builders | PO16 8XT | 2001 |
| A 2 B Coatings Ltd | Builders | PO17 6EX | 2017 |
| A Foster Building Contractor Ltd | Builders | PO17 6EX | 2016 |
| A. Edwards Decorating Solutions Ltd | Builders | PO17 6EX | 2017 |
| A. Shires Decor Ltd | Builders | PO17 6EX | 2017 |
| A.C.M. Construction Ltd | Builders | PO15 7FX | 1986 |
| A.T. Jones & Son Ltd | Builders | PO16 8SS | 1976 |
| Abcan Property Holdings Ltd | Builders | PO16 7BB | 2018 |
| Abs (Hampshire) Ltd | Builders | PO15 7AH | 2026 |
| Ahn Property Services Ltd | Builders | PO16 9QD | 2024 |
| Airport Facilities (Heathrow) Ltd | Builders | PO16 7JH | 2014 |
| Airport Facilities (Maintenance) Ltd | Builders | PO16 7JH | 2009 |
| Aj Creative Builders Ltd | Builders | PO15 5AD | 2026 |
| Ako Carpentry & Building Ltd | Builders | PO16 0BZ | 2019 |
| Alexander Chisholm Construction Ltd | Builders | PO16 0EN | 2024 |
| All Under One Roof Developments Ltd | Builders | PO16 9NY | 2020 |
| Allclad Insulation Services Ltd | Builders | PO16 7JH | 2000 |
| Amg Building Contractors Ltd | Builders | PO16 9XS | 2015 |
| Amiri Construction Ltd | Builders | PO15 5TD | 2005 |
| Amiri Homes Ltd | Builders | PO15 5TD | 2019 |
| Aml Renovations Ltd | Builders | PO16 0EN | 2025 |
| Amtrex Groundworks Ltd | Builders | PO16 0HZ | 2026 |
| Apex Bridge Capital Ltd | Builders | PO16 8LR | 2025 |
| Apex Loft Conversions South Ltd | Builders | PO16 0SN | 2025 |
| Applemore Groundworks and Agriculture Ltd | Builders | PO16 8XT | 2026 |
| Aqua Platinum Projects Ltd | Builders | PO15 7FT | 2011 |
| Aquafinishing Ltd | Builders | PO16 0EN | 2022 |
| Aramis Glazing Solutions Ltd | Builders | PO16 7EU | 2022 |
| Arcos Interiors Ltd | Builders | PO16 0EN | 2015 |
| Art of Integration Maintenance Ltd | Builders | PO15 5TD | 2020 |
| Ashley Sturman Construction Ltd | Builders | PO16 0EN | 2024 |
| Aspire-Services Ltd. | Builders | PO16 8PZ | 2013 |
| Asrs Preservation Ltd | Builders | PO17 6EA | 2008 |
| At Jones Holdings Ltd | Builders | PO16 8SS | 2005 |
| Atj Facades Ltd | Builders | PO16 8SS | 2016 |
| Atj Plant Ltd | Builders | PO16 8SS | 2016 |
| B & M Clark (Builders) Ltd | Builders | PO16 8TT | 1978 |
| B J Plumbing Ltd | Builders | PO16 8JL | 1998 |
| Banks Corporation Ltd | Builders | PO17 5JQ | 2020 |
| Basilica Build Ltd | Builders | PO16 9TG | 2026 |
| Beatties Mechanical Contractors Ltd | Builders | PO16 0EN | 2019 |
| Beaubridge Make Homes 1 Ltd | Builders | PO16 7BB | 2020 |
| Belcam Ltd | Builders | PO16 9XS | 2019 |
| Benlee Construction Ltd | Builders | PO16 7JH | 1996 |
| Berkley Care (Bristol) Ltd | Builders | PO15 7AD | 2018 |
| Berkley Care (Chesham) Ltd | Builders | PO15 7AD | 2016 |
| Bishop Construction Ltd. | Builders | PO16 7HB | 2015 |
| Bitterne Building Contractors Ltd | Builders | PO16 7EJ | 2023 |
| Bjm Fencing & Landscaping Ltd | Builders | PO16 0EN | 2026 |
| Bla Contractors Ltd | Builders | PO16 7BB | 2016 |
| Bll Construction Ltd | Builders | PO16 8QG | 2026 |
| Blue Moon Developments (Southampton) Ltd | Builders | PO16 8SS | 2001 |
| Bogdans Home Improvements Ltd | Builders | PO16 7SF | 2023 |
| Bosham Builders Ltd | Builders | PO16 8EL | 2017 |
| Boskalis Eod Services (UK) Ltd | Builders | PO15 5SS | 2013 |
| Boskalis Marine Contracting Ltd | Builders | PO15 5SS | 1959 |
| Boskalis Offshore Ltd | Builders | PO15 5SS | 2012 |
| Boskalis Subsea Ltd | Builders | PO15 5SS | 2010 |
| Boskalis Westminster (Holdings) Ltd | Builders | PO15 5SS | 1933 |
| Boskalis Westminster Ltd | Builders | PO15 5SS | 1962 |
| Boxall Maintenance Ltd | Builders | PO15 7AH | 2020 |
| Bradam Ltd | Builders | PO15 7GB | 2024 |
| Broad Construction Portsmouth Ltd | Builders | PO15 6PU | 2025 |
| Brooklands Homes South Coast Ltd | Builders | PO15 7AH | 2018 |
| Brush Stroke Creations Ltd | Builders | PO17 6EX | 2017 |
| Btb Property Development Ltd | Builders | PO16 0HZ | 2025 |
| Btk Scaffolding Ltd | Builders | PO16 0EN | 2026 |
| Budova Construction Ltd | Builders | PO15 7AH | 2016 |
| Buildable Spaces Ltd | Builders | PO16 0EN | 2026 |
| Builderoo Ltd | Builders | PO15 5TD | 2017 |
| Building Services and Solutions Southern Ltd | Builders | PO16 8UY | 2019 |
| Bundlehome Ltd | Builders | PO15 5TT | 2025 |
| Bw Kitchen & Bathroom Fitters Ltd | Builders | PO17 6EX | 2022 |
| Bwt-Southern Ltd | Builders | PO16 0QS | 2000 |
| C & C Brickwork Ltd | Builders | PO16 8JL | 2007 |
| C & R Brickwork Ltd | Builders | PO17 5PQ | 2017 |
| C Erison Interiors Ltd | Builders | PO17 6EX | 2008 |
| C Hill Property Maintenance Ltd | Builders | PO16 0EN | 2026 |
| C. J. Hoare Ltd | Builders | PO17 5AA | 1994 |
| Cadet Transport Services Ltd | Builders | PO17 6EX | 2017 |
| Caldera Fs Ltd | Builders | PO16 8XT | 2017 |
| Cam Structures Ltd | Builders | PO16 8SS | 2026 |
| Capital Homes Group Ltd | Builders | PO15 5TJ | 2015 |
| Carl West Ltd | Builders | PO16 8XT | 1997 |
| Carter Blinds Ltd | Builders | PO16 9UE | 2012 |
| Cbma Ltd | Builders | PO16 9UN | 2019 |
| Ccw Services Ltd | Builders | PO16 8XT | 2003 |
| Chester Oak Developments Ltd | Builders | PO16 9UZ | 2025 |
| Chilworth Construction Management Ltd | Builders | PO15 7FN | 2005 |
| Chris Puttock Ltd | Builders | PO16 0QQ | 2023 |
| City Locks Ltd | Builders | PO15 7FT | 2003 |
| Cj-Pro Contracting Ltd | Builders | PO16 0EN | 2013 |
| Classic Brickwork (Portsmouth) Ltd | Builders | PO17 6EX | 2003 |
| Cliff & Jones Contracts Ltd | Builders | PO15 7HN | 2026 |
| Clifford & Sons Ltd | Builders | PO16 0HZ | 2007 |
| Closewood Renewables Ltd | Builders | PO16 8XT | 2022 |
| Coastal Waterwatch Ltd | Builders | PO15 7FX | 1996 |
| Compass Projects Ltd | Builders | PO15 7AH | 2022 |
| Condee Ltd | Builders | PO17 5PQ | 2010 |
| Construct A Stencil Ltd | Builders | PO16 8RP | 2025 |
| Construction & Landscape Ltd | Builders | PO16 7JH | 2002 |
| Contour Access Ltd | Builders | PO16 8SS | 2026 |
| Controlled Interiors Ltd | Builders | PO17 5BD | 1993 |
| Coolrain Construction Ltd | Builders | PO17 6EX | 2002 |
| Cornercrest Brickwork Ltd | Builders | PO15 7QD | 2025 |
| Cornwall Carpenters Ltd | Builders | PO15 6RQ | 2025 |
| Cornwall Hendra Ltd | Builders | PO15 6RQ | 2025 |
| Cougar Engineering & Construction Ltd | Builders | PO15 5TH | 2003 |
| County Brickwork Ltd | Builders | PO17 6EX | 2019 |
| Cp Mitchley Ltd | Builders | PO15 5TH | 2015 |
| Crestzest Ltd | Builders | PO16 7BB | 1999 |
| Crown Developments (Winchester) Ltd | Builders | PO15 5SS | 2000 |
| Cura Commercial Ltd | Builders | PO16 7JH | 2016 |
| Curtis & Co Property Renovations Ltd | Builders | PO16 0BZ | 2022 |
| D P D Consultants Ltd | Builders | PO16 7BB | 1990 |
| D&D Brickwork Ltd | Builders | PO16 9AQ | 2018 |
| D&J Modern Housing Ltd | Builders | PO16 0EN | 2026 |
| D.V.P.5 Ltd | Builders | PO15 7EE | 2025 |
| Davis Property Services Gu Ltd | Builders | PO16 7JH | 2018 |
| Dbs Maintenance Ltd | Builders | PO15 5SS | 2003 |
| De Construction UK Ltd | Builders | PO16 9UN | 2007 |
| Deecom and Associates Ltd | Builders | PO16 7BB | 1993 |
| Develotec Design and Build Ltd | Builders | PO17 6EX | 2015 |
| Develotec Electrical Southern Ltd | Builders | PO17 6EX | 2023 |
| Develotec Fm Ltd | Builders | PO17 6EX | 2023 |
| Devine Interior Solutions Ltd | Builders | PO17 6EX | 2014 |
| Df Groundworks Ltd | Builders | PO15 7AX | 2010 |
| Djt Construction Ltd | Builders | PO16 0HZ | 2023 |
| Dm Carpentry & Building Solutions Ltd | Builders | PO17 6EX | 2021 |
| Dma Property Services (South) Ltd | Builders | PO16 8XT | 2023 |
| Dn11 Joinery Ltd | Builders | PO16 0EN | 2023 |
| Dorelbury Ltd | Builders | PO15 5SS | 1980 |
| Douglas Construction Ltd | Builders | PO16 8RB | 2002 |
| Dowling Carpentry and Construction Ltd | Builders | PO16 8EL | 2018 |
| Drh Construction Solutions Ltd | Builders | PO16 7BB | 2019 |
| Dtl Multi Services Ltd | Builders | PO16 0EN | 2022 |
| Duct-Air Ltd | Builders | PO17 5JQ | 2020 |
| Earthmill Ltd | Builders | PO16 0EN | 2009 |
| Ech Property Solutions Ltd | Builders | PO15 5TH | 2015 |
| Eclipse Marine Carpentry Ltd | Builders | PO16 9NN | 2026 |
| Eco Volt Consulting Ltd | Builders | PO16 0EN | 2022 |
| Ecobright Consultancy Services Ltd | Builders | PO15 5TD | 2018 |
| Edge Traffic Management Ltd | Builders | PO17 5HW | 2026 |
| Efo Group Ltd | Builders | PO16 0EN | 2024 |
| Encouraged Construction Ltd | Builders | PO15 7AH | 2019 |