What Are Habitat Houses Like Around the World?

Democratic Republic of Congo (formerly Zaire):
Bricks for this house are made from a Cinva-Ram press, which compresses a mixture of cement and dirt or clay in a metal box to form bricks. The bricks dry in the shade for about two weeks. Spaces are left above both the interior and exterior walls to improve ventilation.
Average house cost: $2,545 (U.S.)

Papua New Guinea:
Due to heavy rains, houses are built on stilts to keep the house dry. The area under the house is used for storage, community gatherings and livestock. Concrete is expensive and not widely used in PNG, so wood is treated to prevent decay and termite infestation.
Average house cost: $2,304 (U.S.)

Sri Lanka:
Some areas build with 6-inch hollow concrete blocks with steel rods to help the structure resist earthquakes, plus micro concrete roof tiles. In other places, houses are built with dry stacked interlocking compressed earth blocks on a stone rubble foundation with corrugated roofing sheets. A lime wash on the blocks offers weather resistance. The house design includes a cooking area, gable roof and pour flush toilet.
Average house cost:$2,436 (U.S.)

India:
Meals and socializing occur on the porch. The high entry step is believed to keep snakes from entering, and the bars on the windows protect from thieves and monkeys. Houses are built of fired bricks for walls and steel-reinforced concrete roof slabs. Some houses are made with hollow-core concrete blocks and tile roofs.
Average house cost: US$1,793 (U.S.)

Romania:
The traditional block construction in Romania takes at least a year to build, but with a plentiful supply of wood, affiliates are choosing to use wood frame construction which is quicker, more volunteer friendly and more energy efficient. Rigid foam insulation, OSB board and fiberglass insulation in the walls and roof achieve an R value of 35. Stucco protects the house walls from weathering and locally made clay tiles finish the roof.
Average house cost: $24,843 (U.S.)

Guatemala:
Houses made of hollow concrete blocks are designed to resist earthquakes. Steel rods reinforce the wall every meter. The spaces around the rods are filled with concrete. Horizontal rods are run through U-blocks at the foundation, window sill and top. The window coverings and door in this photo are wood; however, metal is used in some areas where wood is more expensive.
Average house cost: $2,100 (U.S.)