| NUTMEG HOUSING DEVELOPMENT CORPORATIONStamford, CT · Active | Stamford, CT | Corporation | Aug 26, 1988 | Active |
| NNI BELLTOWN ELDERLY HOUSING, INC.Stamford, CT · Active | Stamford, CT | Corporation | Feb 1, 1990 | Active |
| NNI BELL STREET LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Dec 31, 1992 | Active |
| NNI STILLWATER LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Jun 28, 1994 | Active |
| ATLANTIC STREET DEVELOPMENT CORPORATIONStamford, CT · Active | Stamford, CT | Corporation | Nov 24, 1995 | Active |
| STILLWATER DEVELOPMENT CORPORATIONStamford, CT · Active | Stamford, CT | Corporation | Dec 1, 1995 | Active |
| STAMFORD AFFORDABLE HOMES, INC.Stamford, CT · Active | Stamford, CT | Corporation | Dec 7, 2000 | Active |
| NNI/MHA FRIENDSHIP, INC.Stamford, CT · Active | Stamford, CT | Corporation | Jun 4, 2003 | Active |
| MARTIN LUTHER KING JR. APARTMENTS, LLCStamford, CT · Active | Stamford, CT | LLC | Jul 17, 2003 | Active |
| NHS/NNI MISSION-TAYLOR, LLCStamford, CT · Active | Stamford, CT | LLC | Dec 15, 2003 | Active |
| NNI/ARC SAMUELS COURT, LLCStamford, CT · Active | Stamford, CT | LLC | Jun 22, 2006 | Active |
| LUDLOW PLACE, LLCStamford, CT · Dissolved | Stamford, CT | LLC | Oct 12, 2006 | Dissolved |
| INDIAN FIELD LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Dec 20, 2006 | Active |
| SAMUELS COURT LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Mar 5, 2007 | Active |
| PARK CITY HOUSING CORPORATIONStamford, CT · Active | Stamford, CT | Corporation | Nov 30, 2007 | Active |
| PARK CITY LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Nov 30, 2007 | Active |
| PARK CITY SUPPORTIVE HOUSING, LLCStamford, CT · Active | Stamford, CT | LLC | Aug 5, 2008 | Active |
| NNI FAIR STREET, INC.Stamford, CT · Active | Stamford, CT | Corporation | Oct 22, 2009 | Active |
| FAIR STREET APARTMENTS LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Oct 23, 2009 | Active |
| NNI/MARSHALL, INC.Stamford, CT · Active | Stamford, CT | Corporation | Nov 22, 2010 | Active |
| MARSHALL COMMONS LIMITED PARTNERSHIPStamford, CT · Active | Stamford, CT | Partnership | Nov 22, 2010 | Active |
| VICTORY GARDENS HOUSING LLCStamford, CT · Active | Stamford, CT | LLC | Nov 28, 2011 | Active |
| VICTORY GARDENS MM LLCStamford, CT · Active | Stamford, CT | LLC | Jun 27, 2013 | Active |
| NEW NEIGHBORHOODS PROPERTY MANAGEMENT, LLCStamford, CT · Active | Stamford, CT | LLC | Apr 5, 2021 | Active |
| NEW NEIGHBORHOODS DEVELOPMENT CORPORATIONStamford, CT · Active | Stamford, CT | Corporation | Apr 30, 2021 | Active |
| NNI Seaview House LLCStamford, CT · Active | Stamford, CT | LLC | Nov 21, 2022 | Active |
| NNI Sandstone Apartments LLCStamford, CT · Active | Stamford, CT | LLC | Nov 21, 2022 | Active |
| NNI Redstone Apartments LLCStamford, CT · Active | Stamford, CT | LLC | Nov 21, 2022 | Active |
| NNI Liberty Commons LLCStamford, CT · Active | Stamford, CT | LLC | Nov 21, 2022 | Active |
| NNI Gateway Apartments LLCStamford, CT · Active | Stamford, CT | LLC | Nov 21, 2022 | Active |
| NNI Milestone Apartments LLCStamford, CT · Active | Stamford, CT | LLC | Nov 21, 2022 | Active |
| NNI Pembroke Commons LLCStamford, CT · Active | Stamford, CT | LLC | Nov 23, 2022 | Active |
| NNI AMSTON VILLAGE, LLCStamford, CT · Active | Stamford, CT | LLC | Mar 18, 2024 | Active |
| NNI St. Elizabeth Manor LLCStamford, CT · Active | Stamford, CT | LLC | Jun 5, 2024 | Active |
| NNI SAMUELS COURT LLCStamford, CT · Active | Stamford, CT | LLC | Jun 11, 2024 | Active |
| NNI Horizon View LLCStamford, CT · Active | Stamford, CT | LLC | Jun 28, 2024 | Active |
| St. Elizabeth Manor Limited PartnershipStamford, CT · Active | Stamford, CT | Partnership | Aug 6, 2024 | Active |
| NNI St. Mary's Senior LLCStamford, CT · Active | Stamford, CT | LLC | Feb 2, 2026 | Active |
| St. Mary's Senior Limited PartnershipStamford, CT · Active | Stamford, CT | Partnership | Feb 19, 2026 | Active |