The present invention relates to a real-estate joint-pool service system and method and, more specifically, to a real-estate joint-pool service system and method by which non-resident securities issued via a trust company are paid to the non-resident-securities-related account of an owner, the trust company dividing real estate, left in trust therewith by a user, into resident shares and non-resident shares for issuing the non-resident securities, and which provide a joint-pool service for providing support so as for goods or services of a seller to be purchased using the non-resident securities as standard money, and which secure residential stability by recognizing a right of residence for the real estate of the user via the resident shares and, at the same time, boost investment for creating profits by reducing the burden of funds, invested in the real estate by the user, via the non-resident securities, and can improve the liquidity of the funds invested in the real estate by helping to reduce interest on a loan used at the time of purchasing the real estate.