Buying a home in Chiusi
8,051 residents at the 2021 census, 4,661 buildings and 58.1 km² of territory, Toscana.
Chiusi is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 22.1% of the territory of Chiusi has high or very high landslide hazard (P3 and P4), with 26.9% of the residents. 31.1% of the territory of Chiusi is in the flood area of the medium-probability scenario (P2), with 12.1% of the residents.
Find your address in Chiusi
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Chiusi compared
| ISPRA indicator | Chiusi | SI | Toscana |
|---|---|---|---|
| Landslide, very high hazard (P4) | 2.5% | 4.7% | 4.6% |
| Landslide, high hazard (P3) | 19.5% | 14.1% | 16.4% |
| Landslide, areas of attention | 0% | 0% | 0.6% |
| Residents in landslide areas P3-P4 | 26.9% | 5.2% | 5% |
| Buildings in landslide areas P3-P4 | 27.5% | 5.9% | 8.1% |
| Flood, high probability (P3) | 22.8% | 3.9% | 6.2% |
| Flood, medium probability (P2) | 31.1% | 8.9% | 12.2% |
| Flood, low probability (P1) | 42% | 15.8% | 21.2% |
| Residents in P2 flood areas | 12.1% | 5.1% | 25.6% |
| Buildings in P2 flood areas | 9.6% | 4.8% | 22.2% |
Questions
Which seismic zone is Chiusi in?
Chiusi is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Chiusi is in landslide class P3/P4?
According to ISPRA’s mosaic, 22.1% of the territory of Chiusi has high or very high landslide hazard (P3 and P4), with 26.9% of the residents. By share of territory with landslide hazard P3-P4, Chiusi ranks 9th of 35 municipalities in the province of Siena.
How much of Chiusi is in flood scenario P2?
31.1% of the territory of Chiusi is in the flood area of the medium-probability scenario (P2), with 12.1% of the residents. By share of territory in the P2 flood area, Chiusi ranks 1st of 35 municipalities in the province of Siena.
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 |
|---|---|---|---|
| Chianciano Terme | 3 | 17.2% | 2.5% |
| Sarteano | 3 | 6% | 0.4% |
| Cetona | 3 | 16.3% | 6.5% |
| Montepulciano | 3 | 6.3% | 22.7% |
| Paciano | 2 | 2.6% | 0% |
| Città della Pieve | 3 | 2.8% | 15.8% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on