Countries with a duty to build
Switzerland aims to provide a shelter place for every resident. Depending on the size of a new building, owners either build shelter capacity or pay a contribution towards public shelters.
Finland requires shelters in buildings above defined floor-area thresholds. Many of them are used every day as storage, car parks or sports halls and are converted for protection when needed.
Sweden keeps a nationally recorded stock of around 65,000 shelters.
Countries without a general duty
Germany has no general obligation for private owners to build a shelter. Public shelters were largely given up after the Cold War. According to parliamentary figures, 579 public shelters with about 478,000 places remain, for a population of more than 83 million.
A voluntary shelter in Germany is treated as a building like any other. Building law, distances and zoning apply. There are no specific technical rules that a private shelter has to meet.
What that means for your project
If your country has no duty, you decide what the shelter has to do: how many people, for how long, against which threats. Those decisions shape the structure and the technical fit-out.
For companies, other duties can come into play, for example obligations to protect staff or keep critical operations running. Check these with your own advisers. We plan the shelter around the requirements you give us.