The work consists of the development and maintenance of a micro-services based web application in collaboration with a company, offering banks a system used for the appraisal of real estate properties. The system facilitates the entry of property and valuation data and ensures a secure and efficient communication between the bank and the real estate advisor and its agents, providing an objective and independent assessment of value. The main problem of such solutions is the lack of flexibility and portability, since banks generally use a private secure system, customized to satisfy their specific needs. The goal is to provide a consistent solutions and features in the app that is simply integrated into any bank's internal process, and to make it maintainable mainly through logs and to work on its adaptability to requirement changes and modifications on any level.