| Value | Category |
|---|---|
| 1 | Purchase from private individual |
| 2 | Purchase from the state |
| 3 | Exchange for other dwelling |
| 4 | Exchange for other asset |
| 5 | Land buying cooperative |
| 6 | Result of adjudication |
| 7 | Inheritance |
| 8 | Donation from charitable organization |
| 9 | Allocated by state |
| 88 | Other |