The legal system about the management of the condominium in Belize is characterized by the three points: (1) the owners are required to pay for insurance for the repair or rebuilding of the condominium building to avoid the risk of financial deficit, (2) the simple majority of the owners is required for most decisions about the management even for one about the rebuilding of the condominium building, (3) the developer of the condominium building has a wide range of freedom about the contents of the bylaw of the management of the condominiums which the buyers have to abide by after the sales. In contrast, in Japan, it takes lots of time and cost to negotiate and reach the conclusion about the management and rebuilding of the condominium building, there are lots of default of management fees, and there are lots of mandated articles in the bylaw, all of which leads to the deterioration of the quality of the condominium building. Thus there is a big room for Japan to admit the simple and clear legal system as we see in Belize. The auction system of Belize is also clearly defined and smoothly operated at low cost without the overprotection of renters while Japan’s system suffers not only from the blockage of the auction process by antisocial groups, but high cost and the low price of the auctioned real estate. Again there are lots of lessons we should learn from Belize.