| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 65 CODICOTE ROAD DEVELOPMENTS LIMITED | 09075554 | 06/06/2014 | Not Trading |
| BOEBERRY LIMITED | 01133650 | 30/07/2009 | Not Trading |
| CAMFORD WAY DEVELOPMENTS LIMITED | 05867484 | 02/08/2006 | Dissolved |
| CARLTON ROAD DEVELOPMENTS (HARPENDEN) LIMITED | 00886938 | 01/05/2016 | Silver |
| HARPENDEN ESTATES LIMITED | 01102252 | 30/07/2009 | Silver |
| JARVIS COMMERCIAL LIMITED | 00401234 | 04/08/2006 | Bronze |
| JARVIS COMMERCIAL PROPERTIES LIMITED | 04103174 | 27/04/2001 | Bronze |
| JARVIS GROUP LIMITED | 04153939 | 05/06/2014 | Amber |
| JARVIS HOMES LIMITED | 01008430 | 04/08/2006 | Bronze |
| JARVIS INDCOM LIMITED | 01788550 | 30/07/2009 | Bronze |
| PHASE 1 OAKFIELD ROAD MANAGEMENT (HARPENDEN) LIMITED | 03593476 | 01/05/2016 | Not Trading |
| SAUNCEY AVENUE PROPERTY LIMITED | 06909033 | 18/05/2009 | Not Trading |
| SOVEREIGN PARK DEVELOPMENTS LIMITED | 03569514 | 01/05/2016 | Dissolved |
| THE WHITE HOUSE DEVELOPMENTS (BOXMOOR) LIMITED | 10925805 | 26/10/2017 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 2 HARRIER COURT MANAGEMENT LTD | 10952837 | 08/09/2017 | 01/03/2024 | Amber |
| ARDEN GROVE MANAGEMENT LIMITED | 10480213 | 15/11/2016 | 01/12/2020 | Silver |
| BEECHWOOD VIEW ESTATE MANAGEMENT LIMITED | 08619734 | 22/07/2013 | 09/07/2014 | Silver |
| DELLCROFT WAY HARPENDEN MANAGEMENT COMPANY LIMITED | 09627849 | 08/06/2015 | 15/02/2019 | Silver |
| GLENEAGLE MANOR MANAGEMENT COMPANY LIMITED | 08791364 | 26/11/2013 | 01/09/2020 | Gold |
| HERON CLOSE MANAGEMENT COMPANY LIMITED | 09111247 | 01/07/2014 | 30/03/2016 | Not Trading |
| ICKLEFORD MEWS MANAGEMENT COMPANY LTD | 10868639 | 17/07/2017 | 01/09/2020 | Silver |
| OSPREY CLOSE (HARPENDEN) MANAGEMENT COMPANY LIMITED | 08900685 | 18/02/2014 | 25/04/2019 | One Red Flag |
| PADDOCK VIEW MANAGEMENT COMPANY LIMITED | 07851976 | 17/11/2011 | 16/04/2019 | Gold |
| PARKINSON HOUSE MANAGEMENT COMPANY LIMITED | 09902137 | 04/12/2015 | 23/01/2020 | Gold |
| ROUNDHOUSE FARM MANAGEMENT COMPANY LIMITED | 10964197 | 14/09/2017 | 19/11/2019 | Not Trading |
| SHEFFORD DEVELOPMENTS LIMITED | 10429500 | 14/10/2016 | 12/01/2018 | Silver |
| WATERHOUSE MANAGEMENT (HEMEL HEMPSTEAD) LIMITED | 09454214 | 23/02/2015 | 11/07/2016 | Amber |
| WATERSIDE (HARPENDEN) MANAGEMENT LIMITED | 05224812 | 07/09/2004 | 31/08/2023 | Not Trading |