Buying a home in Sant’Antioco
10,756 residents at the 2021 census, 3,936 buildings and 88 km² of territory, Sardegna.
Sant’Antioco is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low. According to ISPRA’s mosaic, 6.1% of the territory of Sant’Antioco has high or very high landslide hazard (P3 and P4), with 0.1% of the residents. 3.2% of the territory of Sant’Antioco is in the flood area of the medium-probability scenario (P2), with 29.5% of the residents.
Find your address in Sant’Antioco
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Sant’Antioco compared
| ISPRA indicator | Sant'Antioco | SU | Sardegna |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0.8% | 3.2% | 2.1% |
| Landslide, high hazard (P3) | 5.4% | 6.2% | 7.3% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 0.1% | 1% | 1.3% |
| Buildings in landslide areas P3-P4 | 0.6% | 1.9% | 2% |
| Flood, high probability (P3) | 1.4% | 3.5% | 3.4% |
| Flood, medium probability (P2) | 3.2% | 4.3% | 4% |
| Flood, low probability (P1) | 5.3% | 9.4% | 7% |
| Residents in P2 flood areas | 29.5% | 8.2% | 7.5% |
| Buildings in P2 flood areas | 33.8% | 8.4% | 7.5% |
Questions
Which seismic zone is Sant’Antioco in?
Sant’Antioco is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low.
How much of Sant’Antioco is in landslide class P3/P4?
According to ISPRA’s mosaic, 6.1% of the territory of Sant’Antioco has high or very high landslide hazard (P3 and P4), with 0.1% of the residents. By share of territory with landslide hazard P3-P4, Sant’Antioco ranks 31st of 107 municipalities in the province of Sud Sardegna.
How much of Sant’Antioco is in flood scenario P2?
3.2% of the territory of Sant’Antioco is in the flood area of the medium-probability scenario (P2), with 29.5% of the residents. By share of territory in the P2 flood area, Sant’Antioco ranks 36th of 107 municipalities in the province of Sud Sardegna.
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 |
|---|---|---|---|
| Calasetta | 4 | 1.6% | 5% |
| San Giovanni Suergiu | 4 | 0% | 13.9% |
| Sant’Anna Arresi | 4 | 0.3% | 0.4% |
| Masainas | 4 | 0.3% | 3% |
| Giba | 4 | 0% | 4.4% |
| Tratalias | 4 | 0% | 2.8% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on