| Castle Hills Schools Foundation | Related tax-exempt org | Support | TX | 752732689 |
| Castle Hills Commercial Association | Related taxable corporation/trust | Commercial properties | TX | 320605822 |
| Castle Hills Residential Association | Related taxable corporation/trust | Homeowners assoc | TX | 752765912 |
| Castle Hills VRRP I Condo Assoc INC | Related taxable corporation/trust | Homeowners assoc | TX | 202279329 |
| CH GOLF Villas II Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 474042955 |
| CH GOLF Villas Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 464230030 |
| Chateaux at the Shops Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 371855084 |
| Enchanted HILL Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 205377168 |
| Quarters at the Shops Condominium Community INC | Related taxable corporation/trust | Homeowners assoc | TX | 320540225 |
| EALM Master Condominium Community Section I INC | Related taxable corporation/trust | Homeowners assoc | TX | 843917509 |
| Realm WEST Neighborhood Association INC | Related taxable corporation/trust | Homeowners assoc | TX | 825500941 |
| Sojourn at the Realm Condominium Community INC | Related taxable corporation/trust | Homeowners assoc | TX | 843904559 |
| The Reserve Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 203357582 |
| The Retreat Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 205377096 |
| Townhomes at Northpointe Neighborhood Association | Related taxable corporation/trust | Homeowners assoc | TX | 845185007 |
| Village Shops Commercial Condo Community SECT I INC | Related taxable corporation/trust | Homeowners assoc | TX | 852849152 |
| GOLF Villas III Neighborhood Association INC | Related taxable corporation/trust | Homeowners assoc | TX | 862699208 |