| Value | Category |
|---|---|
| 10 | natural |
| 11 | no walls |
| 12 | dirt/mud |
| 20 | rudimentary |
| 21 | plastic |
| 22 | wattle and daub |
| 23 | stone with mud |
| 24 | mud with cement mix |
| 25 | cardboard |
| 26 | reused wood |
| 30 | finished |
| 31 | cement |
| 32 | stone with lime/cement |
| 33 | bricks |
| 34 | cement block/concrete |
| 36 | wood planks |
| 37 | corrugated iron/zinc |
| 96 | other |