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Utility building value depends, among other things, on the renovation and
modernization activities undertaken at the maintenance stage. They result from a correct
assessment of the building condition. Lack of appropriate methods, which in a comprehensive
way, taking into account the utility requirements for these buildings, would allow to assess the
condition of buildings is one of the main reasons for negligence in the proper maintenance of
public buildings. With this in mind, the author carried out a study aimed at an in-depth analysis
and assessment of the possibility of applying renovation and modernization measures in
relation to the improvement of the utility value of the building and the cost of their
implementation. As part of the research, a mathematical model was first developed, which was
used to carry out the research. As part of the development of the model, a set of criteria relating
to technical-utility, economic and environmental requirements was selected and a method for
their evaluation was developed. Next, proposals of renovation and modernization activities
were presented, the aim of which is to improve the utility value ratio of the building. For its
evaluation the method based on the theory of fuzzy sets was used, which at the stage of
inference uses expert knowledge included in the fuzzy rules database. The calculated utility
value of the proposed renovation and modernization activities is the basis for further research
analyses. Optimization tasks consisting in the selection of an appropriate repair variant are
carried out by means of appropriate optimization methods. The adopted optimization
objectives concerned both the possibility of improving the assumed increase in utility value
and limitations in their financing. The assessment of utility value of public utility buildings,
which has not been carried out yet, taking into account the current legal and utility
requirements, will allow to determine the impact of renovation and modernization decisions
taken on this basis on the adopted determinants determining the quality of the maintenance
process, i.e. the increase in utility value and maintenance cost. The results of these studies may
be important in expanding existing knowledge and the knowledge gained may contribute to
changes in the way decisions are made and the improvement of the quality of building
maintenance.
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