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Seismic risk in Romania: check a block by address.

The year built, floors and seismic zone of any block, from its address. Only an assessment sets the risk class: find it on the city hall’s list, below.

Free, no account. Pick the address from the list to see what we know about the building.

Bucharest, by sectorbuilt before 1978
Bucharest
44%
Sector 1
49%
Sector 2
54%
Sector 3
31%
Sector 4
34%
Sector 5
48%
Sector 6
29%
Romaniabuildings with a known year built
Buildings
12,400,268
Year known
1,115,576
Before 1978
48%
Data of15 October 2026
Seismic risk classesLaw 212/2022, art. 1
RsI
may collapse
RsII
major damage
RsIII
moderate damage
RsIV
like a new building

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.

  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.

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

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

  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.

Buildings by period builtRomania, buildings with a known year
Buildings by period built
before 1920
23,115
1920–1945
70,660
1946–1960
176,751
1961–1970
169,514
1971–1980
130,210
1981–1990
72,255
1991–2000
125,723
2001–2010
76,716
2011 or later
270,632

48% of 1,115,576 buildings with a known year were built before 1978.

The year is known for only part of the buildings, and 24% of them were built in 2011 or later: the share of old buildings is of these, not of every building.

Cite as: baseray, “Buildings built before 1978 in Romania”, data of 15 October 2026, https://baseray.ai/seismic-risk/romania/statistics.

Statistics by city and sector

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

Cities 47
City County Year known Before 1978
1 București Sectorul 1 București 5,421 49%
2 București Sectorul 2 București 4,721 54%
3 București Sectorul 3 București 2,848 31%
4 București Sectorul 4 București 3,039 34%
5 București Sectorul 5 București 4,777 48%
6 București Sectorul 6 București 2,172 29%
7 Craiova Dolj 9,233 35%
8 Timișoara Timiș 2,233 24%
9 Cluj-Napoca Cluj 2,144 24%
10 Constanța Constanța 4,345 40%
11 Oradea Bihor 9,353 29%
12 Arad Arad 2,794 33%
13 Brașov Brașov 3,962 20%
14 Iași Iași 4,623 30%
15 Ploiești Prahova 2,331 57%
16 Sibiu Sibiu 2,244 19%
17 Galați Galați 3,803 37%
18 Brăila Brăila 2,228 29%
19 Bacău Bacău 2,255 33%
20 Târgu Jiu Gorj 3,382 24%
21 Satu Mare Satu Mare 3,124 30%
22 Râmnicu Vâlcea Vâlcea 5,313 38%
23 Târgu Mureș Mureș 1,552 29%
24 Buzău Buzău 1,411 46%
25 Baia Mare Maramureș 3,251 31%
26 Bistrița Bistrița-Năsăud 3,818 9%
27 Alba Iulia Alba 4,247 22%
28 Giurgiu Giurgiu 1,336 55%
29 Suceava Suceava 2,010 27%
30 Piatra-Neamț Neamț 1,649 34%
31 Tulcea Tulcea 577 37%
32 Pitești Argeș 1,930 22%
33 Botoșani Botoșani 2,556 34%
34 Călărași Călărași 1,965 49%
35 Drobeta-Turnu Severin Mehedinți 1,156 41%
36 Focșani Vrancea 914 11%
37 Zalău Sălaj 2,921 17%
38 Slatina Olt 3,138 25%
39 Miercurea Ciuc Harghita 1,430 40%
40 Vaslui Vaslui 1,194 25%
41 Târgoviște Dâmbovița 1,102 30%
42 Deva Hunedoara 1,062 36%
43 Alexandria Teleorman 704 26%
44 Slobozia Ialomița 1,013 28%
45 Sfântu Gheorghe Covasna 1,033 37%
46 Reșița Caraș-Severin 974 54%
47 Buftea Ilfov 1,010 24%
Statistics by city and sector Every town Check an address

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

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.

Before

  • Check the block: the year built above, the class on the city hall’s list.
  • Fix tall furniture to the wall and keep heavy things off high shelves.
  • Pack an emergency bag: water, food, a torch, a first-aid kit, copies of your papers.
  • Never cut walls or columns: work on the structure needs an assessment and a permit.
  • The official guide (in Romanian): fiipregatit.ro.

During

  • Stay inside. Take cover under a sturdy table and protect your head.
  • Keep away from windows, mirrors and light fittings.
  • Do not use the lift and do not go out on the balcony.

After

  • Leave calmly, by the stairs, with shoes on. Check whether anyone is hurt.
  • Turn off the gas if you smell it and light no flame.
  • Call 112 for emergencies only and follow IGSU’s announcements.
  • New cracks in the structure are for a certified technical expert to judge: tell the owners’ association and the city hall.

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

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.

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.

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.

How do I check a block before buying a flat?

Search the address above: year built, floors, seismic zone and cadastral number. Look the block up on the city hall’s list, 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).

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.

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.

Segment builderBucharest
Seismic risk class
RsIRsIIRsIIIRsIVU1–U3
Year built
before 1978
Town
Bucharest
  • Segments by risk classFilter buildings by the class on the official list (RsI–RsIV, U1–U3), with the assessment year, on the map.
  • CSV exportThe buildings with their address, year built, floors, risk class and assessment year.
  • APIThe class and assessment year on every building, and a class filter on building search.
Open 5 buildings free API documentation

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

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

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