Housing problems in the large urban areas in Brazil have increased, summing up quantitative issues to the qualitative ones. Nowadays, besides new houses buildings, the crucial demands that have been pointed out are centered at the improvement of better housing condition. These needs are concerned with the built environment and the insertion of the huge deficient peripheral occupation in the formal urban context. It is estimated that at least 50% of major cities population live in these areas, where families' average monthly income is below three minimum wages (US$ 200), most of them earned trough informal work.