DETERMINATION OF THE INVESTMENT COSTS
FOR BUILDINGS RENOVATION

Venelin Terziev¹, Svilen Stefanov², Svetoslava Enimaneva^3
1Corresponding Member of the Russian Academy of Natural History,  Moscow, Russia, Prof.
D.Sc.(Ec.), D.Sc. (National Security), D.Sc.  (Social Activities), Ph.D., National Military University, Veliko Tarnovo, Bulgaria; University of Rousse, Rousse, Bulgaria, terziev@skmat.com
²Prof, Ph.D., National Military University, Veliko Tarnovo, Bulgaria, sestefanov@abv.bg
³Ph.D., National Military University, Veliko Tarnovo, Bulgaria, svetlush@gmail.com

Abstract

Theoretic and methodological aspects of making a model in general comprise the application of different scientific methods. In the current case, management of buildings condition, the appropriate methods are related to the architectural and construction features of buildings, to the energy savings gained through improvement of the outer elements (walls, floors, roofs), and to investment appraisal. The general question is how to combine these methods in order to elaborate an overall model which may be used irrespectively of the type of the building (housing, administrative, production or agricultural).

Keywords: economic efficiency, energy efficiency, investment models.