PROBLEM TO BE SOLVED : without using an auxiliary certificating the rent, standard than the real estate lease rent. SOLUTION : the resident 17 of deposit on a lease contract management company 14 according to the amount of the deposit, rather than a standard rent is set to advise rent from service, public even without using auxiliary rent, rent than standard. In this way, a person cannot be cleared by tachineputa severe constraints such as personnel or the amount of income tenants constitution of a conventional household of rent in the auxiliary system is imposed, and can become a giver rent to advise of benefits. Selected drawing : fig. 2