This paper presents a case study on a building, which was designed in the influence of the New Brutalism in the 1970s. At first the origin, the concept and the values of the building are revealed, then several experts' opinion are summarized about its problems emphasizing the necessity of the frontal modernization. From the description of the designed modernization it is visible how the house will be able to fulfill the recent functional and energetic requirements. © 2009 Akadémiai Kiadó.