| Value | Category | 
|---|---|
| 10 | NATURAL | 
| 11 | No walls | 
| 12 | Cane, palm tree, trunks | 
| 13 | Mud | 
| 20 | RUDIMENTARY | 
| 21 | Palm, bamboo | 
| 22 | Interwoven sticks or reeds and mud ('Bajareque') | 
| 23 | Sheet | 
| 24 | Adobe | 
| 25 | Wood planks | 
| 26 | Waste material | 
| 30 | FINISHED | 
| 31 | Cement | 
| 32 | Stone with lime/cement | 
| 33 | Bricks | 
| 34 | Cement block | 
| 35 | Covered adobe | 
| 96 | Other |