The Master’s thesis is dealing with fire-fighting safety of a particular residence in two alternatives. The difference of the given alternatives lies in the construction of the ceiling, specifically in the type of the building material. The results of the given alternatives are then compared and are further studied to show which parts of the fire-fighting building safety are affected by the change in the building material. The introduction deals with specifying the residence as is, based on the construction law 50/1976, further on the demands made by fire-fighting building safety edict and the active legislation, which is obligatory to follow in all situations. An important part of the problem is characterizing the fire durability, classification of boundary states and ways to improve the fire-fighting durability with specific building material choices. Next, the goals of the Master’s thesis are defined, where the choices in solving the fire-fighting building safety with different building materials are compared. In the method, the solution of the fire-fighting building safety is briefly described in the project documentation for the building, which is then applied to the particular residence. In the conclusion, the results are studied and compared, while underlying the demands on fire-fighting durability.