The present invention relates to a housing life service system and an additional service intermediation method. The housing life service system according to the present invention includes a tenant terminal (110) in which an application for an additional service, providing an additional service can be installed; a landlord terminal (120); a lease consumer terminal (130); a control office server (140) providing a notice to be notified to the tenant terminal (110), the landlord terminal (120), and the lease consumer terminal (130); an additional service providing server (160) providing a plurality of additional services to the tenant terminal (110), the landlord terminal (120), and the lease consumer terminal (130); and an additional service intermediation server (150) intermediating the notice provided from the control office (140) to the tenant terminal (110), the landlord terminal (120), and the lease consumer terminal (130) and intermediating the additional service provided from the additional service providing server (160) to the tenant terminal (110), the landlord terminal (120), and the lease consumer terminal (130).(110) Tenant terminal(120) Landlord terminal(130) Lease consumer terminal(140) Control office server(150) Additional service intermediation server(160) Optional service providing serverCOPYRIGHT KIPO 2014