The housing protection after World War One was a significant social-political measure of the state for solving of the housing problems and alleviation of the social distress, felt by those materially most handicapped people, especially the working class. It lasted from December 1918 till May 1928. At the beginning the housing protection was carried out by the housing offices of the municipality, while from the year 1925, the housing courts in court circuits were taking an active part in this field. In the revolutionary circumstances following World War One, the Slovene National government introduced a system of provisional requisition of the redundant and empty apartments, as well as the redundant rooms in apartments. Each person had the right to have only one apartment. Because of the great housing problem in towns and industrial centres, following World War One, the National government of the Kingdom of Serbs, Croats and Slovenes, enacted the Resolution on the municipalities' right of intervention regarding the apartments. The house owners, who owned several apartments, or did not use all the rooms in their apartments, had to report that to the competent municipalities, otherwise they were sentenced to 6 weeks of prison and a fine of 5.000 crowns, or they were threatened by an even more rigorous punishment. The workers' and social flats were small and their number was far too small. Most of them were one piece flats. In the hutments almost tree thirds of the flats were one piece flats. The flats on hire were expensive, too expensive for an average worker of that time, and totally unattainable for the socially handicapped population. There were relatively a lot of so-called managementflats, owned by the employers, who had had them intentionally built for the workers they employed. In spite of a very lively building activities following World War One, the housing distress was very great for the majority of the working class. The housing protection after World War One was necessary, it was useful and effective as well, although it lasted for only ten years following the war. During the first decade after the war, the housing problems were solved by the housing protection, during the second decade by a more intensive building of workers' and social flats, as well as by the cooperative building ofproprietorialflats and workers' houses.