Research relevance is determined by the need for development of the effective design and organizational-technological solutions at the stage of design or renovation of housing construction objects in the conditions of tightening requirements for the duration, cost, and quality of construction projects being implemented, as well as the limitations of scientific developments used for determination of the characteristics for the above-mentioned solutions in terms of the completeness of the factors under consideration and the objectivity of taking into account the relationships between them. Problem statement: The paper considers a design solution formed in relation to the enclosing structure within housing construction object, which involves the use of thermal insulation material as a separate layer of the structure. It is necessary to form mathematical description of the relationships between the technical and cost characteristics of the thermal insulation material and the energy and economic efficiency indicators of the design solution. Research aim: development of tools to determine the characteristics of design solutions formed in relation to the enclosing structure within housing construction object, based on energy and economic efficiency criteria. Research tasks are the following: review and comparative analysis of scientific developments in the field of determination of characteristics for design solutions formed in relation to enclosing structures within housing construction objects; development of analytical model describing correlation between the specific cost and technical characteristics of thermal insulation material used as a separate layer of the enclosing structure; implementation of the model on a practical example; formation of recommendations for the use of the model during solution of the problems related to determination of characteristics of design solutions for enclosing structures. Results. The analytical model has been developed that describes the linear dependence of the specific cost of thermal insulation material used in the enclosing structure on its technical characteristics. The results of the implementation of the analytical model on a practical example confirmed its high practical significance. Findings. The developed analytical model can be used for predictive calculation of the specific cost of thermal insulation material corresponding to the mineral wool on the basis of the specified values for its technical characteristics. Due to the composition of the factors taken into account, the developed analytical model can be effectively integrated into the structure of tools for determination of the characteristics for design solutions related to enclosing structures within housing construction object on the basis of energy and economic efficiency criteria.