土砂災害警戒区域
dosha saigai keikai kuikiどしゃさいがいけいかいくいき
Landslide warning zone
Designated landslide-risk areas: yellow zones require disclosure and warning systems, while red special zones (特別警戒区域) restrict construction and can require structural reinforcement. Common around Japan's mountainous edges — precisely where scenic cheap houses cluster.
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