INTRO is a BI (Business Intelligence) system for the participants of off-plan development – builders, investors, homebuyers, banks and other agents. INTRO IT products provide access to advanced market analytics for industry professionals as well as for private homebuyers. The register of under construction objects and investors’ contracts are stored in the blockchain, which in turn receives data from official state sources. This allows for effective market analysis without violating the proprietors' rights to personal data protection. INTRO system users will be able to find the most attractive off-plan properties in dozens of countries and invest in the ongoing construction under smart contracts. The blockchain ensures reliability of the information about the building plan and transaction security, while avoiding costs of intermediation by real estate brokers, lawyers or profiteers. Smart contracts enable the users to save up to 30% on property investment.