Q3-1 What kind of preliminary survey is required when applying for permission?

The ground survey is the basis of the development plan, so please carry out appropriately according to the contents of the plan. In particular, when designing the structure of the retaining wall, which is always subject to earth pressure, obtain detailed ground data such as various soil constants.
In addition, conduct a survey on the surrounding land and houses in advance, and carefully consider the effects of the construction and make an application area setting and a development plan.

Summary of Guides, etc. on this answer

• Preliminary survey (at the time of design)
  “Guide to Residential Land Development” Part 3, Chapter 1, 4
• Preliminary survey (at the time of construction)
  “Guide to Residential Land Development” Part 4, Chapter 2, 3

Contact for inquiries regarding this answer

• About permission of construction about residential land development
  Housing and Architecture Bureau Residential Land Examination Department

For specific details in a specific location, please contact the person in charge of each area.