In Turkey, structures with wooden carrier system were traditionally built until about 40 years ago. The increase in reinforced concrete structures due to fires, decay, material shortages, the thought that forests will decrease and rapid urbanization caused wooden structures to be abandoned. However, countries under the threat of earthquakes such as the USA, Canada, Japan, and Australia continued to build wooden structures by taking advantage of the developing technological opportunities. The importance of wood in Turkish housing history and the determination of the performance of exemplary structures that still use wood are seen as important in terms of reviving the wooden building culture. The aim of this study was to evaluate the performance of the wooden materials of Nemlioğlu mansion, which was built with wooden materials in 1892 in the Black Sea region of Trabzon province, by testing the wooden materials with destructive and non-destructive test methods. Thus, it was aimed to reach scientific data about the Turkish wooden housing system through the mechanical performances of the wooden elements of the wooden mansion that was still standing. For this purpose, samples were taken from certain parts of the bearing parts of Nemlioğlu Mansion, and bending strength and modulus of elasticity tests were carried out. In addition, the damage, defects, and resistance properties of the building's bearing elements were tried to be determined with non-destructive test devices. When the results obtained were examined, it was determined that most of the wooden elements in the mansion in question still maintain their load-bearing properties and provided the minimum mechanical resistance properties specified in the standards.