The home of the mother party was put into operation in April 1969. The archives say that the high-rise building was designed in the period 1965-1966 in the Planning Organization of the city of Plovdiv with designers of the famous Bulgarian architects Vladimir Rangelov, Lubomir Bonev, Milcho Sapundzhiev, Georgi Karayanev, Kolyu Kolev. Prof. Stancho Belkovski was also a consultant to the team. Designers of the "structures" part were engineer Lyuben Sofkarov – designer of the high body - and engineer Drago Alexiev – designer of the low body. Everything was built without compromises in the type and quality of the materials, and the 54-year-old building is the first building in Bulgaria designed and built with a skeletal beamless structure. The vaulted roof structure of the Concert Hall is also innovative and unique for our country, according to data from the Chamber of Architects.
The Party House is an example of modern architectural thinking and high architectural craftsmanship, inspired by the architecture of Mies van der Rohe. This architectural movement originated from the German Bauhaus and the Western European International Style and became a highly acceptable model for a number of cultural, educational institutions and large corporations, such as the Seagram Building skyscraper in New York. The skyscraper at number 375 Park Avenue was completed a dozen years earlier - in 1958. According to architects, the two buildings resembled each other. The US building is 38 stories high, and the one in Plovdiv only 12.
With its construction, the topic of "synthesis of the arts", which was current during Socialism was successfully popularized - that is, to integrate works of other arts into the buildings. Thus, in the lobby of the Party House there is a large mural, and outside - towards Central Square - a mosaic panel by the great Plovdiv artist Yoan Leviev.
The steps of the first secretaries of the District Committee of the BCP - Comrade Drazha Valcheva, Comrade Ivan Panev and Comrade Pantelei Patchov still echo on the 9th floor. Urban legends say that on this floor they had a huge office, with a meeting room and a private recreation room. Other legends apocryphally whisper what was discovered under the mastodon during its construction, and none of these cultural-historical artifacts ever saw the light of day. According to the postulate of the "supremacy of the Party", no archeology was more important than this urban symbol of the BCP.
At the moment, the building is occupied by municipal and state offices, and according to the latest decision of the expert council for territorial planning, it could be expanded to accommodate the Opera House.