Within the reconstruction of town hall premises, the authorities of a district town decided to rebuild existing ramshackle group house radically. The house is located in a historic area of the city and therefore some parts of the house, namely the medieval cellars and street front, are listed. In addition, the adaptation of the underground spaces, facades and gable walls was necessary, too. In the course of designing process and also during the reconstruction works, the drawings had to be repeatedly revised, partly quite fundamentally.