| Abbreviation | Definition |
|---|---|
| HW | HardWood floor |
| HWD | HardWooD Floor |
| HWDFLRS | HardWood FLooRS |
| HWS | Hot Water System |
| I/A | Internal Access |
| IBTM | In Before The Move |
| ICF/IID | Intermediate Care Facility for the Intellectually Disabled (previously known as ICF/MR) |
| ICF/MR | Intermediate Care Facility for the Mentally Retarded (now known as ICF/IID) |
| IDHA | International District Housing Alliance |
| IFHP | International Federation for Housing and Planning |
| IHAT | Integrated Housing Adaptations team |
| IHB | Industrialized Housing and Buildings |
| IMAC | Install, Move, Add, or Change |
| IMD | Interim Multiple Dwelling |
| INCL | Included |
| INSP | INSPect |
| IO | Immediate Occupancy |
| IOL | Inventory Of Losses |
| IRC | International Residential Code |
| IRHS | Institute for Rental Housing Studies |