Buying a home in Trequanda
1,195 residents at the 2021 census, 1,332 buildings and 64 km² of territory, Toscana.
Trequanda is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 33.4% of the territory of Trequanda has high or very high landslide hazard (P3 and P4), with 11.4% of the residents. 0.8% of the territory of Trequanda is in the flood area of the medium-probability scenario (P2), with 5.6% of the residents.
Find your address in Trequanda
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Trequanda compared
| ISPRA indicator | Trequanda | SI | Toscana |
|---|---|---|---|
| Landslide, very high hazard (P4) | 6.1% | 4.7% | 4.6% |
| Landslide, high hazard (P3) | 27.3% | 14.1% | 16.4% |
| Landslide, areas of attention | 0% | 0% | 0.6% |
| Residents in landslide areas P3-P4 | 11.4% | 5.2% | 5% |
| Buildings in landslide areas P3-P4 | 6% | 5.9% | 8.1% |
| Flood, high probability (P3) | 0% | 3.9% | 6.2% |
| Flood, medium probability (P2) | 0.8% | 8.9% | 12.2% |
| Flood, low probability (P1) | 2.7% | 15.8% | 21.2% |
| Residents in P2 flood areas | 5.6% | 5.1% | 25.6% |
| Buildings in P2 flood areas | 5.8% | 4.8% | 22.2% |
Questions
Which seismic zone is Trequanda in?
Trequanda is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Trequanda is in landslide class P3/P4?
According to ISPRA’s mosaic, 33.4% of the territory of Trequanda has high or very high landslide hazard (P3 and P4), with 11.4% of the residents. By share of territory with landslide hazard P3-P4, Trequanda ranks 7th of 35 municipalities in the province of Siena.
How much of Trequanda is in flood scenario P2?
0.8% of the territory of Trequanda is in the flood area of the medium-probability scenario (P2), with 5.6% of the residents. By share of territory in the P2 flood area, Trequanda ranks 30th 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 |
|---|---|---|---|
| Torrita di Siena | 3 | 8.5% | 17.9% |
| Sinalunga | 3 | 1.7% | 23.6% |
| San Quirico d’Orcia | 3 | 41.5% | 8.2% |
| Lucignano | 3 | 6.2% | 18.5% |
| Pienza | 3 | 40% | 8.1% |
| Rapolano Terme | 3 | 12.3% | 11.3% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on