Buying a home in San Sebastiano al Vesuvio
8,721 residents at the 2021 census, 1,146 buildings and 2.6 km² of territory, Campania.
San Sebastiano al Vesuvio is in seismic zone 2: in this zone strong earthquakes are possible. According to ISPRA’s mosaic, 2.4% of the territory of San Sebastiano al Vesuvio has high or very high landslide hazard (P3 and P4), with 0% of the residents. 0.1% of the territory of San Sebastiano al Vesuvio is in the flood area of the medium-probability scenario (P2), with 0% of the residents.
Find your address in San Sebastiano al Vesuvio
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San Sebastiano al Vesuvio compared
| ISPRA indicator | San Sebastiano al Vesuvio | NA | Campania |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0% | 9.1% | 9.5% |
| Landslide, high hazard (P3) | 2.4% | 7.8% | 10.1% |
| Landslide, areas of attention | 0% | 0% | 22% |
| Residents in landslide areas P3-P4 | 0% | 3.2% | 4.7% |
| Buildings in landslide areas P3-P4 | 0.2% | 6.5% | 9.2% |
| Flood, high probability (P3) | 0.1% | 2.8% | 2.5% |
| Flood, medium probability (P2) | 0.1% | 4.2% | 5.7% |
| Flood, low probability (P1) | 0.1% | 5.4% | 6.2% |
| Residents in P2 flood areas | 0% | 3.4% | 5.1% |
| Buildings in P2 flood areas | 0% | 4.3% | 5.9% |
Questions
Which seismic zone is San Sebastiano al Vesuvio in?
San Sebastiano al Vesuvio is in seismic zone 2: in this zone strong earthquakes are possible.
How much of San Sebastiano al Vesuvio is in landslide class P3/P4?
According to ISPRA’s mosaic, 2.4% of the territory of San Sebastiano al Vesuvio has high or very high landslide hazard (P3 and P4), with 0% of the residents. By share of territory with landslide hazard P3-P4, San Sebastiano al Vesuvio ranks 48th of 92 municipalities in the Metropolitan City of Napoli.
How much of San Sebastiano al Vesuvio is in flood scenario P2?
0.1% of the territory of San Sebastiano al Vesuvio is in the flood area of the medium-probability scenario (P2), with 0% of the residents. By share of territory in the P2 flood area, San Sebastiano al Vesuvio ranks 78th of 92 municipalities in the Metropolitan City of Napoli.
Guides: seismic zone · landslides and floods · what to check before an offer. OMI prices: GEOPOI (how to read them).
Nearby municipalities
| Municipality | Seismic zone | Landslide P3-P4 | Flood P2 |
|---|---|---|---|
| Massa di Somma | 2 | 56.6% | 1% |
| Cercola | 2 | 0% | 0.7% |
| Pollena Trocchia | 2 | 30.8% | 18.6% |
| San Giorgio a Cremano | 2 | 0% | 2.5% |
| Ercolano | 2 | 15.1% | 6.5% |
| Portici | 2 | 0% | 0.2% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on