Short answer. Under Finland's Rescue Act (379/2011), the owner of a new building of at least 1,200 m² (1,500 m² for industrial and storage buildings) must build a civil defence shelter in or near the building as part of the building project 1. Owners and occupants must keep it ready for use within 72 hours 13. Shelter equipment must carry the VSS marking 5.
Which buildings must have a shelter?
The duty is set by the Rescue Act and applies to new construction 1:
| Building type | Shelter required from |
|---|---|
| Dwellings and workplaces (a building, or a group of buildings on one plot) | 1,200 m² of floor area |
| Industrial, production, storage and assembly buildings | 1,500 m² of floor area |
The law states it plainly: "the owner of the building shall build in the building or in its vicinity a civil defence shelter" 1. Temporary buildings used for 5 years or less, and farm production facilities, are excluded 1. When comparable alteration work is carried out on a building, its shelter must be renovated as well 1.
How large the shelter must be, which class it belongs to and how far it can be from the building are set by decree; see Finland's shelter standards 2.
How is the shelter approved?
There is no separate shelter permit: the shelter is handled through the building permit 1.
- The building permit authority, after hearing the rescue authority, can allow one joint shelter for several buildings, provided it is built within 5 years 1.
- The same authority can grant exemptions from technical, size and location requirements 1.
- An exemption from the duty itself is granted by the regional state administrative authority 1.
- The Ministry of the Interior can exempt whole areas, on a municipality's application 1.
The English text of the Rescue Act is an unofficial translation from 2011. Later reforms, such as the new Building Act and the 2026 reorganisation of the regional state agencies, may have changed the names of these authorities 1. Your municipality's building control office confirms who decides today.
What are the maintenance duties?
A shelter is only useful if it works when ordered open. The rules require 134:
- the shelter and its equipment kept so it can be taken into use within 72 hours;
- equipment inspected and serviced at least every 10 years, with an inspection record shown to the rescue authority on request;
- the shelter included in the housing company's emergency plan.
Can I build a shelter at my own house?
Smaller buildings fall below the size thresholds and may have no shelter 1. The official sources reviewed for this page contain no national permit rule specific to a voluntary home shelter. Ask your municipality's building control office before planning one, and have any design done by a qualified structural engineer. Phaenyx gives no construction instructions.
Before you plan anything, two of our guides explain what is at stake: Can you bury a shipping container as a shelter? and What is a shelter's protection factor?. For ventilation and filtration, see How does NBC air filtration work in a shelter?.
Frequently asked questions
Does a house in Finland need a shelter?
The duty applies to new buildings of at least 1,200 m² (1,500 m² for industrial and storage buildings) 1. Smaller buildings may have no shelter.
Who decides on exemptions?
The building permit authority, after hearing the rescue authority, for technical, size and location requirements; the regional state administrative authority for the duty itself; the Ministry of the Interior for whole areas on a municipality's application 1.
How often must shelter equipment be inspected?
At least every 10 years, with an inspection record shown to the rescue authority on request 13.
Is shelter equipment regulated?
Yes. Decree 409/2011 sets requirements and the VSS marking for shelter equipment 5, and Decree 506/2011 sets technical requirements and maintenance 3.
How quickly must a shelter be ready?
Within 72 hours of being ordered into use 13.
Sources
- Ministry of Justice - Finlex — Rescue Act (379/2011), unofficial English translation, sections 71-76 — https://www.finlex.fi/api/media/statute-foreign-language-translation/688086/mainPdf/main.pdf (accessed 2026-10-20)
- Finlex (Suomen säädöskokoelma) — Valtioneuvoston asetus väestönsuojista 408/2011 — https://www.finlex.fi/api/media/statute/97896/mainPdf/main.pdf (accessed 2026-10-20)
- Finlex (Suomen säädöskokoelma) — Sisäasiainministeriön asetus väestönsuojien teknisistä vaatimuksista ja väestönsuojien laitteiden kunnossapidosta 506/2011 — https://www.finlex.fi/api/media/statute/97201/mainPdf/main.pdf (accessed 2026-10-20)
- Ministry of the Interior / Suomi.fi — Preparedness in housing companies - Preparing for Incidents and Crises — https://www.suomi.fi/guides/preparedness/preparedness-is-about-cooperation/preparedness-in-housing-companies (accessed 2026-10-20)
- Finlex (Suomen säädöskokoelma) — Valtioneuvoston asetus väestönsuojan laitteista ja varusteista 409/2011 — https://www.finlex.fi/api/media/statute/97072/mainPdf/main.pdf (accessed 2026-10-20)
Turn this into action
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- The nuclear plants and zones around your home
- Phaenyx Safe: one tap to tell your people you are safe
Sources
- Ministry of Justice - Finlex · Rescue Act (379/2011), unofficial English translation, sections 71-76 checked 2026-10-20
- Finlex (Suomen säädöskokoelma) · Valtioneuvoston asetus väestönsuojista 408/2011 checked 2026-10-20
- Finlex (Suomen säädöskokoelma) · Sisäasiainministeriön asetus väestönsuojien teknisistä vaatimuksista ja väestönsuojien laitteiden kunnossapidosta 506/2011 checked 2026-10-20
- Ministry of the Interior / Suomi.fi · Preparedness in housing companies - Preparing for Incidents and Crises checked 2026-10-20
- Finlex (Suomen säädöskokoelma) · Valtioneuvoston asetus väestönsuojan laitteista ja varusteista 409/2011 checked 2026-10-20