Preservation of authenticity increases the value of cultural heritage sites (monuments) and the national heritage of Russia. In the northern areas of low population density. People are not enough to maintain wooden objects, rotting and fires cause great damage. The Venice Charter provides for the adaptation of buildings for the benefit of society, provided that the architectural integrity and decor are preserved. The absence of the mention of the 'integrity of structures’ should not allow double interpretation for radical actions to the detriment of the supporting structures. Identified a number of violations caused by low legal literacy of the population and the actions of officials without regard to situations in the municipalities. Expert assessment by the method of analyzing hierarchies showed the importance of erroneous management decisions: violation of the periodicity of detailed surveys and monitoring of the state of structures - 25%; the use of workers with low qualifications - 55%; the use of cheap materials and products with low maintenance resource - 10%; strengthening structures without calculations reduces the periods between repairs and the operational life of the object - 10%.