Treatise on "how the single-family house in low-rise buildings (if applied out of reach of land speculation) can be considered in an ideal sense as a cheap housing object," with the aim of arriving at a measure of practical habitability. One of the principles is to eliminate romanticism in assessment. The article cites Duiker and Wiebenga's Precast Concrete System Patent No. 14321 as one of the solutions for economic construction. It further provides a list of "residential conveniences to increase household efficiency," suitable for low-rise and/or high-rise buildings. Illustrations: floor plans/reinforced concrete housing for the third CIAM congress in Brussels; perspectives/reinforced concrete housing for the third CIAM congress in Brussels