Due to the tendency that there are no newly constructed houses under the current severe housing budget constraints as well as in other cities in Japan, in government ordinance city YOKOHAMA's council housing management responsibilities, one of the main challenges is to make the maximum use of the already constructed housing stocks. Concerning the council housing management, there has been the problem that there was an inedible rate of the people who decided not to enter to the houses after they got a chance after the lottery. This paper clarifies the direction and the consequence of the revision of the system of recruiting methods which was led in 2010 whose aim was to minimize the cancelation.