Exhibit 22.1
Subsidiary Guarantors
| Subsidiary | State of Formation/Organization | |
| IIP-AZ 1 LLC | Delaware | |
| IIP-AZ 2 LLC | Delaware | |
| IIP-CA 1 LP | Delaware | |
| IIP-CA 2 LP | Delaware | |
| IIP-CA 3 LP | Delaware | |
| IIP-CA 4 LP | Delaware | |
| IIP-CA 5 LP | Delaware | |
| IIP-CA 6 LP | Delaware | |
| IIP-CA 7 LP | Delaware | |
| IIP-CO 1 LLC | Delaware | |
| IIP-CO 2 LLC | Delaware | |
| IIP-CO 3 LLC | Delaware | |
| IIP-CO 4 LLC | Delaware | |
| IIP-FL 1 LLC | Delaware | |
| IIP-FL 2 LLC | Delaware | |
| IIP-FL 3 LLC | Delaware | |
| IIP-GP LLC | Delaware | |
| IIP-IL 1 LLC | Delaware | |
| IIP-IL 2 LLC | Delaware | |
| IIP-IL 3 LLC | Delaware | |
| IIP-IL 4 LLC | Delaware | |
| IIP-IL 5 LLC | Delaware | |
| IIP-IL 6 LLC | Delaware | |
| IIP-MA 1 LLC | Delaware | |
| IIP-MA 2 LLC | Delaware | |
| IIP-MA 3 LLC | Delaware | |
| IIP-MA 4 LLC | Delaware | |
| IIP-MA 5 LLC | Delaware | |
| IIP-MA 6 LLC | Delaware | |
| IIP-MA 7 LLC | Delaware | |
| IIP-MD 1 LLC | Delaware | |
| IIP-MD 2 LLC | Delaware | |
| IIP-MI 1 LLC | Delaware | |
| IIP-MI 2 LLC | Delaware | |
| IIP-MI 3 LLC | Delaware | |
| IIP-MI 4 LLC | Delaware | |
| IIP-MI 5 LLC | Delaware | |
| IIP-MI 6 LLC | Delaware | |
| IIP-MI 7 LLC | Delaware | |
| IIP-MI 8 LLC | Delaware | |
| IIP-MN 1 LLC | Delaware | |
| IIP-MO 1 LLC | Delaware | |
| IIP-ND 1 LLC | Delaware | |
| IIP-NJ 1 LLC | Delaware | |
| IIP-NJ 2 LLC | Delaware | |
| IIP-NJ 3 LLC | Delaware | |
| IIP-NV 1 LLC | Delaware | |
| IIP-NY 1 LLC | Delaware | |
| IIP-NY 2 LLC | Delaware | |
| IIP-OH 1 LLC | Delaware | |
| IIP-OH 2 LLC | Delaware |
| IIP-OH 3 LLC | Delaware | |
| IIP-OH 4 LLC | Delaware | |
| IIP-PA 1 LLC | Delaware | |
| IIP-PA 2 LLC | Delaware | |
| IIP-PA 3 LLC | Delaware | |
| IIP-PA 4 LLC | Delaware | |
| IIP-PA 5 LLC | Delaware | |
| IIP-PA 6 LLC | Delaware | |
| IIP-PA 7 LLC | Delaware | |
| IIP-PA 8 LLC | Delaware | |
| IIP-TX 1 LLC | Delaware | |
| IIP-VA 1 LLC | Delaware | |
| IIP-WA 1 LLC | Delaware |