Vacation homes in mountainous areas are at risk of being damaged by landslides. For this reason, the hazard maps published by the local government widely warn of such disasters. If your vacation home is located on a slight cliff or slope, it is also important to check the hazard map to make sure that it is not a "landfill" or an "embanked residential land" where serious problems such as landslides and liquefaction are likely to occur in the future. In addition, since public sewage treatment is often difficult, it is necessary to install individual septic tanks and then check the condition of the septic tanks on a regular basis. If regular maintenance is not carried out, there is a risk of odor problems. When renting out to a third party, there is a risk of receiving complaints from users. Furthermore, a cooperative fee for maintaining the water supply may require several hundred thousand yen at the time of purchase. Construction costs for building a new parking lot may run into the millions of yen.