The project The Panel Building Algorithm is a Master Thesis of a group 21 at Architecture & Design at Aalborg University. The labour raises a problem of prefabricated panel buildings in Poland from communism period (1952-1989) which is a significant part of polish landscape. It describes their social meaning, technical aspects and visual issues. The second part of the thesis is a proposal of improving them for better standards mainly in terms of exterior architectural quality, area of apartments and sustainability. The thesis also undertake a general reflection and conclusion upon the panel buildings future and encourages to the discussion.