What usually decides it
Authorities tend to ask the same questions, whatever the country:
- Size and height of the structure
- Distance to the boundary and to neighbouring buildings
- Whether it is above or below ground
- Zoning rules for the plot
- Intended use: shelter only, or also a workroom or storage
Germany as an example
In Germany, building law is set by each federal state. Small structures can be exempt from a permit, but the thresholds differ from state to state, and a structure that is exempt still has to comply with the rules on distances and zoning.
Describe the use honestly in the application. If a shelter is also used as an office or guest room, that is a different use from a storage shed, and the authority will treat it that way.
Documents you will need
Typically a site plan, floor plan and section drawings, a description of the construction and, depending on the case, structural calculations. For a project with us, we supply the drawings and technical data for the shelter. The site plan usually comes from you or your architect.
Outside Germany
Some countries treat shelters very differently. In Switzerland, shelter capacity is part of building law. Finland requires shelters in buildings above certain floor areas. Elsewhere, a private shelter is simply a small building. Ask your local building authority early. It costs little and saves months.