The present invention relates to a comprehensive real estate construction management system and a method thereof, capable of creating mutual profits of real estate and construction to a construction owner, an architect, a construction company, a small sum investor, and a real estate expert online. The present invention includes : a funding application receiving part storing and managing funding application by receiving the funding application, including comprehensive construction plan information and a necessary funding amount, from a terminal of the construction owner; a funding evaluation management part transmitting the received comprehensive construction plan information and necessary funding amount to at least one terminal of one among an internal building expert, an external building expert, and a real estate investment expert for funding evaluation, and then receiving funding evaluation information to store and manage the information; a funding collecting part transmitting at least one from the completely evaluated comprehensive construction plan information, funding evaluation information and funding summary information to a terminal of the small sum investor who requested the provision of investment information; a funding collection rate display part confirming whether money for application is deposited from the terminal of the small sum investor into a designated account for the investor who submitted a small sum investment application form, and displaying a real time funding collection rate on a webpage in accordance with a result of the confirmation of the depositing; and a contract processing requesting part requesting an online or offline contract by transmitting funding amount payment approval information to the terminal of the construction owner who received the funding request when the collection of the necessary funding amount is completed.(100) Comprehensive real estate construction management system(105) Member information management part(110) Funding application receiving part(115) Funding evaluation management part(120) Funding collecting part(125) Funding collection rate display part(130) Contract processing request part(135) Contract processing part(140) Funding part(150) Architect processing part(160) Constructor collection processing part(165) Data posting part(170) Construction progress webpage management part(AA) Member information DB(BB) Fund management DBCOPYRIGHT KIPO 2017