Natalya Ushenko, Eleonora Tereshchenko, Oksana Shkolenko
Formulation of the problem. Ukraine’s construction sector operates under wartime disruptions while requiring innovation-driven modernisation for post-war reconstruction. The financing structure of capital investments is imbalanced: the majority of funds come from enterprises’ own resources, while bank lending and foreign investment are negligible. This constrains developers’ adoption of BIM, modular construction, and SMART solutions. The problem is the absence of a framework integrating mixed financing into the innovation strategy of development enterprises. The purpose of the article is to substantiate the theoretical and methodological principles of forming a strategy for the innovative development of development enterprises in the context of diversification of funding sources, as well as to develop practical recommendations for optimizing the structure of financial support for innovative projects in the construction sector of Ukraine, taking into account modern economic challenges and prospects for post-war reconstruction. The object is the process of strategic planning and financial provision of innovative development of real estate development enterprises. Methods: systems analysis and synthesis, statistical analysis of capital investments, comparative analysis of domestic and international practices, logical generalisation, matrix modelling. Hypothesis: financing diversification through a mixed model ensures higher innovation output and competitiveness than mono-source approaches. Basic materials. Capital investment structure has been analysed. A three-block conceptual model (diagnostic, strategic, implementation) has been developed. An original matrix matching five innovation project types with financing sources has been proposed. Five principles defined: diversification, alignment, phasing, adaptability, synergy. Originality lies in integrating innovation and financial components into a unified strategic framework and developing a resource optimisation matrix. Results are applicable by development managers and government bodies. Conclusions. The transition to mixed financing has been substantiated. Further research should address efficiency evaluation and adaptation of international instruments to Ukraine’s market.