Strengthening measures against cliffs centered on existing retaining walls

Retaining walls are earth retaining walls provided to prevent sediment from collapsing on residential lands and slopes with height differences.

In Yokohama City, where there are many slopes, about 70% of the city area is designated as residential land development construction restricted areas, and it is necessary to build retaining walls based on the Regulation Law for Residential Land Development, etc., according to the height difference.

Person who owns land with retaining wall is obliged to maintain and maintain it in a safe state at all times after construction of retaining wall.

Also, if you are considering purchasing land with retaining walls, let's check the safety of the existing retaining wall
In some cases, be aware that it is necessary to rebuild the retaining wall.

Story of retaining wall (PDF: 567KB)
Owner responsibility, type of retaining wall, improvement method, and timing of maintenance and improvement
About evacuation, point of inspection, guidance of consultation counter (please see here for inquiries)

About subsidy of cliff ground, retaining wall improvement, please see page of Building Disaster Prevention Division.