| Value | Category |
|---|---|
| 10 | NATURAL |
| 11 | No wall |
| 12 | Bamboo / cane / palm / trunk |
| 13 | Mud |
| 20 | RUDIMENTARY |
| 21 | Bamboo with mud |
| 22 | Stone with mud |
| 23 | Adobe not covered |
| 24 | Plywood |
| 25 | Cardboard |
| 26 | Recovered wood |
| 30 | FINISHED |
| 31 | Cement |
| 32 | Stone with lime/wood |
| 33 | Bricks |
| 34 | Cement blocks |
| 35 | Adobe overlay |
| 36 | Wooden board/shingles |
| 96 | Other |