On the basis of theoretical studies devoted to the modular system of proportioning architectural monuments of Uzbekistan, examples of harmonisation of facades of historical buildings are considered. The basic typology of constructive and artistic methods of forming and balancing facade compositions is presented, and the complexity of their shaping is noted. The proposed classification system covers a wide range of ways of proportioning facade elements, which is of value for the professional training of restoration architects. The developed principles can be applied in the practice of harmonisation of facades of architectural monuments.