If you are buying a vacation home by the sea, you should understand that the risks of moisture control, salt damage, and natural disasters are significant. It is an easy problem to imagine that outdoor units for air conditioning systems, gas water heaters, cars, bicycles, etc. will rust more easily than normal because of the salt blown by the ocean breeze on seaside properties. People stepping on sand and water can also damage interiors, and during storms, salt may also be left on windowpanes.
In addition to that, and in some cases even more than salt damage, condensation and mold problems caused by moisture from the sea can make it difficult to maintain floors and other areas.
The hazard maps published by local governments widely warn that seaside areas are susceptible to flooding in the event of a tsunami or heavy rainfall caused by a strong earthquake or large typhoon. If your vacation home is located in an upland area with a view of the sea, where the risk of flooding is low, it is important to check the hazard map to make sure that the area is not a "landfill" or a "built-up residential area" where serious problems such as landslides and liquefaction are likely to occur in the future. If there is a retaining wall, it can become a serious legal problem if not properly managed, and is one of the factors that make it difficult to sell when selling. If you grew up in a seaside area, you know that during a storm, it is scary, not to mention worrisome, to wonder when your windows will break. As you can see, a vacation home by the sea requires different maintenance costs than a vacation home in an inland area.