The lifeboat of his life is best known for his own holiday home in Luppa, with its reinforced concrete balcony and roof over the waterfront of the Danube Concrete. The cottage in 1934, Built in 1935. In the treatment of the reinforced concrete structure, Kozma is equally familiar to furniture and furniture in designing interior design or in joinery work. By him planned family houses can be seen as the simplified form of the Cosma architecture as well as its graphic and applied arts work. THE instead of decorating the function, as well as in furnishings.