| A. M. RIZZO ELECTRICAL CONTRACTORS, INC.Danbury, CT · Active | Danbury, CT | Corporation | Jan 20, 1969 | Active |
| RIZZO CORPORATIONDanbury, CT · Active | Danbury, CT | Corporation | Apr 22, 1981 | Active |
| G & R MANAGEMENT SERVICES, INC.Brookfield, CT · Dissolved | Brookfield, CT | Corporation | May 4, 1988 | Dissolved |
| CITY CENTER DEVELOPERS, INC.Danbury, CT · Active | Danbury, CT | Corporation | Dec 8, 1989 | Active |
| FEDERAL MECHANICAL SERVICES, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Aug 9, 1996 | Dissolved |
| J.A.R. ASSOCIATES, LLCDanbury, CT · Active | Danbury, CT | LLC | Jun 23, 1997 | Active |
| SHELTER LEE, LLCDanbury, CT · Active | Danbury, CT | LLC | Aug 26, 1997 | Active |
| 185 GRASSY PLAIN, LLCDanbury, CT · Active | Danbury, CT | LLC | Apr 23, 1998 | Active |
| TRF, LLCDanbury, CT · Active | Danbury, CT | LLC | Jan 26, 2004 | Active |
| TRIANGLE INDUSTRIES, LLCDanbury, CT · Active | Danbury, CT | LLC | Jun 2, 2004 | Active |
| RIZZO REBEIRO INVESTMENTS, LLCDanbury, CT · Dissolved | Danbury, CT | LLC | Jun 2, 2004 | Dissolved |
| SHELTER ROCK LANE, LLCDanbury, CT · Dissolved | Danbury, CT | LLC | May 8, 2006 | Dissolved |
| DANBURY C & EC LLCDanbury, CT · Dissolved | Danbury, CT | LLC | Dec 4, 2006 | Dissolved |
| 29 FEDERAL ROAD, LLCDanbury, CT · Active | Danbury, CT | LLC | Dec 21, 2007 | Active |
| 41 SOUTH, LLCDanbury, CT · Active | Danbury, CT | LLC | Mar 4, 2008 | Active |
| RIZZO COMPANIES, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Nov 24, 2008 | Dissolved |
| RIZZO COMMUNICATIONS, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Dec 15, 2008 | Dissolved |
| QUALITY MOTORS, INC.Danbury, CT · Active | Danbury, CT | Corporation | May 9, 2011 | Active |
| 26 FEDERAL LLCDanbury, CT · Active | Danbury, CT | LLC | Nov 21, 2011 | Active |
| RIZZO FAMILY INVESTMENT LLCDanbury, CT · Active | Danbury, CT | LLC | Dec 10, 2012 | Active |
| 282 WHITE STREET LLCDanbury, CT · Active | Danbury, CT | LLC | Mar 27, 2013 | Active |
| TOWN LINE COMMONS LLCDanbury, CT · Active | Danbury, CT | LLC | Jul 15, 2013 | Active |
| 84 SHELTER ROCK LLCDanbury, CT · Active | Danbury, CT | LLC | Jul 30, 2013 | Active |
| RIZZO FAMILY GROUP, LLC.Danbury, CT · Active | Danbury, CT | LLC | Jan 21, 2014 | Active |
| NO. 1 SHELTER ROCK, LLCDanbury, CT · Active | Danbury, CT | LLC | Nov 10, 2015 | Active |
| SHELTER ROCK SUDS N DUDS, LLCDanbury, CT · Active | Danbury, CT | LLC | Nov 10, 2015 | Active |
| 55 TRIANGLE LLCDanbury, CT · Active | Danbury, CT | LLC | May 9, 2016 | Active |
| JARVIS ROAD, LLCDanbury, CT · Active | Danbury, CT | LLC | Aug 22, 2017 | Active |
| 66 WOOSTER HEIGHTS, LLCDanbury, CT · Active | Danbury, CT | LLC | Aug 9, 2018 | Active |
| 3G, LLCDanbury, CT · Active | Danbury, CT | LLC | Aug 9, 2018 | Active |
| K&P Associates LLCBethel, CT · Active | Bethel, CT | LLC | Oct 18, 2018 | Active |
| ACR LLCDanbury, CT · Active | Danbury, CT | LLC | Nov 1, 2018 | Active |
| 55 SHELTER ROCK ROAD, LLCDanbury, CT · Active | Danbury, CT | LLC | Nov 7, 2019 | Active |
| RIZZO ELECTRICAL CONTRACTORS, INC.Danbury, CT · Active | Danbury, CT | Corporation | Jun 29, 2022 | Active |
| The A.M. Rizzo Companies, Inc.Danbury, CT · Dissolved | Danbury, CT | Corporation | Mar 9, 2023 | Dissolved |
| 11 AUGUSTA, LLC.Danbury, CT · Active | Danbury, CT | LLC | Mar 31, 2023 | Active |
| RIZZO FAMILY FOUNDATION INCLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Oct 30, 2023 | Dissolved |
| RIZZO FAMILY FOUNDATION INCDanbury, CT · Active | Danbury, CT | Corporation | Nov 28, 2023 | Active |
| Federal Sewer LLCDanbury, CT · Active | Danbury, CT | LLC | Sep 30, 2025 | Active |
| 66 Stony Hill, LLCDanbury, CT · Active | Danbury, CT | LLC | Jan 15, 2026 | Active |