Interviewer instructions
Write "X" in the box opposite the kind of material used in the construction of the outer walls. Fill out this item through observation but if you are in doubt, ask the respondent on the material used mainly for the outer walls.
For a house or building in which half of the storeys is walled with concrete/brick/stone and the other half with wood, write "X" in the box opposite the category Half concrete/brick/stone and half wood. Mark also this category if the walls are made of about half of two categories of materials mentioned above.
For a two-storey house, especially in rural areas wherein the ground floor is used to raise poultry, or to store grains, farm implements, and others, report the main material used in walling the second floor, unless the walls can be classified under Half concrete/brick/stone and half wood. In other cases, wherein the walls are made of different materials, report the material used in most part of the walls.
Housing units in nonbuilding structures such as carts, railroad cars, trailers, caves, culverts, boats, and bridges should have an "X" mark in the box opposite Makeshift/salvaged/ improvised materials.
Write "X" in the box opposite Others and specify the kind of material used for the outer walls if the material of the outer walls is not one of the aforementioned categories.