Seismic risk in Romania: check a block by address.

What RsI, RsII, RsIII and RsIV mean. The classes in the law, set only by a technical assessment.

1. RsI may collapse

   The building may collapse, fully or partly, in the design earthquake.

   The local council puts warning signs at every entrance of the block (the “red dot”, bulina roșie) within 60 days of the assessment. It can join the national strengthening programme.

2. RsII major damage

   The building may suffer major damage that endangers its occupants, though collapse is unlikely.

   It can join the national strengthening programme, like RsI. After the works it must reach RsIV.

3. RsIII moderate damage

   The building may suffer moderate damage that can endanger its occupants.

   A strengthened RsI block must reach at least this class.

4. RsIV like a new building

   The building behaves in an earthquake like one designed to today’s codes.

   The class an RsII block must reach after strengthening.

Older lists also use the urgency categories U1–U3 from earlier assessments: they said how urgent strengthening was and are not risk classes. Only a certified technical expert sets the class, following the P100-3 code.

Which buildings are more exposed. The year built shows which code the building was designed to.

1. Before 1963 no binding code

   The rules after the 1940 earthquake were recommendations, not obligations. Interwar blocks belong here.

   On record: 301,972 buildings, 1,481 blocks of them

2. 1963–1977 P13-63, P13-70

   The first binding codes, with lower design seismic forces than today. The earthquake of 4 March 1977 showed their limits.

   On record: 231,024 buildings, 1,115 blocks of them

3. 1978–1991 P100-78, P100-81, P100-91

   Codes written after the 1977 earthquake, on the ground motion recorded in Bucharest that day.

   On record: 120,432 buildings, 1,138 blocks of them

4. Since 1992 P100-92, P100-1/2006, P100-1/2013

   Today’s codes. Each town’s design ground acceleration comes from P100-1/2013.

   On record: 513,557 buildings, 17,378 blocks of them

Bucharest and the county seats. How many of the buildings with the year on record were built before 1978. Each city has its own page.

The official lists, by city. The law requires every city hall to publish its assessed buildings; few do.

• București · AMCCRS classes RsI–RsIV, U1–U3 and strengthened buildings
• Craiova assessed buildings, classes I–IV
• Constanța housing in risk classes, with cadastral numbers
• Galați assessed blocks
• Brașov buildings in classes RsI–RsIII
• Bacău buildings assessed from 2008 to 2022
• Reșița assessed buildings, classes RsII–RsIV
• National strengthening programme · MDLPA RsI or RsII buildings in the strengthening programme

Law 212/2022, art. 9: the mayor draws up the lists of assessed buildings and publishes them on the city hall’s website. If your city is missing here, ask the city hall for its list.

Before, during and after an earthquake. In short, from the civil protection inspectorate’s (IGSU) advice.

Seismic risk questions. Short answers, with the law beside them.

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How do I find out whether my block has the red dot?

Look the address up on the city hall’s list; in Bucharest, on the AMCCRS list. Blocks of flats in class RsI get warning signs at their entrances within 60 days of the assessment (Law 212/2022, art. 9). Only assessed buildings are on the lists.

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What do RsI, RsII, RsIII and RsIV mean?

They are the seismic risk classes of Law 212/2022. RsI: the building may collapse, fully or partly, in the design earthquake. RsII: major damage, collapse unlikely. RsIII: moderate damage. RsIV: behaves like a building designed to today’s codes.

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Are all blocks built before 1977 dangerous?

No. The year shows which code the block was designed to: before 1978 an older one, before 1963 no binding code at all. Only a technical assessment tells its real condition, and some old blocks have been strengthened.

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How do I check a block before buying a flat?

Search the address above: year built, floors, seismic zone, cadastral number and the official-list class, where the block is found on one. Check the city hall’s list too, ask the owners’ association whether it was assessed or strengthened, and get the land book extract: the law requires the risk class to be noted there (Law 212/2022, art. 3).

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Where is the list of seismic risk buildings in my city?

The city hall must publish it on its website (Law 212/2022, art. 9). The lists we found are above: Bucharest, Craiova, Constanța, Galați, Brașov, Bacău and Reșița. If your city is missing, ask the city hall.

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What does the seismic zone on the building record mean?

It is the ground acceleration buildings in the town are designed for, from the P100-1/2013 code, between 0.10 g and 0.40 g. It is not a risk class: it says how strong the design earthquake is there, not how the building behaves.

For professionals. The buildings on the official lists, by risk class: in the app, in exports and through the API.

Sources. The law, the codes and the figures on this page.

• Law 212/2022 on reducing the seismic risk of buildings: the classes (art. 1), warning signs and the city halls’ lists (art. 9), the strengthening programme (art. 11), repeal of Ordinance 20/1994 (art. 36)
• The P100-3 code: seismic evaluation of existing buildings, which assessments follow
• The P100-1/2013 code: the design ground acceleration in each town
• IGSU, the “Nu tremur la cutremur” campaign
• baseray figures of 15 October 2026, computed over the buildings whose year built is on record.

Cite as: baseray, “Seismic risk: buildings from before 1978 in Romania, by recorded year built”, data of 15 October 2026, baseray.tech/romania-seismic-risk-check.