Buying a home in Castel del Piano
4,808 residents at the 2021 census, 3,436 buildings and 67.8 km² of territory, Toscana.
Castel del Piano is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 43% of the territory of Castel del Piano has high or very high landslide hazard (P3 and P4), with 12.8% of the residents. 3.7% of the territory of Castel del Piano is in the flood area of the medium-probability scenario (P2), with 0.4% of the residents.
Find your address in Castel del Piano
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Castel del Piano compared
| ISPRA indicator | Castel del Piano | GR | Toscana |
|---|---|---|---|
| Landslide, very high hazard (P4) | 13.3% | 5.1% | 4.6% |
| Landslide, high hazard (P3) | 29.7% | 18.6% | 16.4% |
| Landslide, areas of attention | 0% | 0% | 0.6% |
| Residents in landslide areas P3-P4 | 12.8% | 6.9% | 5% |
| Buildings in landslide areas P3-P4 | 18.1% | 11.1% | 8.1% |
| Flood, high probability (P3) | 3.7% | 9.5% | 6.2% |
| Flood, medium probability (P2) | 3.7% | 15.2% | 12.2% |
| Flood, low probability (P1) | 7.8% | 28.5% | 21.2% |
| Residents in P2 flood areas | 0.4% | 8.8% | 25.6% |
| Buildings in P2 flood areas | 0.4% | 8.8% | 22.2% |
Questions
Which seismic zone is Castel del Piano in?
Castel del Piano is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Castel del Piano is in landslide class P3/P4?
According to ISPRA’s mosaic, 43% of the territory of Castel del Piano has high or very high landslide hazard (P3 and P4), with 12.8% of the residents. By share of territory with landslide hazard P3-P4, Castel del Piano ranks 8th of 28 municipalities in the province of Grosseto.
How much of Castel del Piano is in flood scenario P2?
3.7% of the territory of Castel del Piano is in the flood area of the medium-probability scenario (P2), with 0.4% of the residents. By share of territory in the P2 flood area, Castel del Piano ranks 19th of 28 municipalities in the province of Grosseto.
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 |
|---|---|---|---|
| Seggiano | 3 | 72.6% | 6.3% |
| Arcidosso | 3 | 52.5% | 1.6% |
| Castiglione d’Orcia | 3 | 43.2% | 13.7% |
| Cinigiano | 3 | 44.5% | 10.2% |
| Santa Fiora | 2 | 44.3% | 0.9% |
| Abbadia San Salvatore | 2 | 43.6% | 0.9% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on