Buying a home in Allerona
1,685 residents at the 2021 census, 1,228 buildings and 82.6 km² of territory, Umbria.
Allerona is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 20.2% of the territory of Allerona has high or very high landslide hazard (P3 and P4), with 5.5% of the residents. 0.5% of the territory of Allerona is in the flood area of the medium-probability scenario (P2), with 0.1% of the residents.
Find your address in Allerona
The preview is free: the parcel, the seismic zone and the types of flags. The full dossier costs €29 including applicable VAT.
Allerona compared
| ISPRA indicator | Allerona | TR | Umbria |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0.1% | 0.2% | 0.1% |
| Landslide, high hazard (P3) | 20.2% | 6.1% | 5.8% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 5.5% | 2.4% | 2.1% |
| Buildings in landslide areas P3-P4 | 10.6% | 4.5% | 3% |
| Flood, high probability (P3) | 0.4% | 2.9% | 3% |
| Flood, medium probability (P2) | 0.5% | 3.8% | 4.3% |
| Flood, low probability (P1) | 0.6% | 4.2% | 6% |
| Residents in P2 flood areas | 0.1% | 6.9% | 7.2% |
| Buildings in P2 flood areas | 0.1% | 5.7% | 6.5% |
Questions
Which seismic zone is Allerona in?
Allerona is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Allerona is in landslide class P3/P4?
According to ISPRA’s mosaic, 20.2% of the territory of Allerona has high or very high landslide hazard (P3 and P4), with 5.5% of the residents. By share of territory with landslide hazard P3-P4, Allerona ranks 1st of 33 municipalities in the province of Terni.
How much of Allerona is in flood scenario P2?
0.5% of the territory of Allerona is in the flood area of the medium-probability scenario (P2), with 0.1% of the residents. By share of territory in the P2 flood area, Allerona ranks 22nd of 33 municipalities in the province of Terni.
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 |
|---|---|---|---|
| Castel Viscardo | 3 | 13.3% | 9.7% |
| Fabro | 3 | 4.5% | 15.4% |
| Ficulle | 3 | 3.9% | 4.6% |
| Acquapendente | 2B | 23% | 1.6% |
| San Casciano dei Bagni | 2 | 13.4% | 1.4% |
| Monteleone d’Orvieto | 3 | 3.7% | 18.3% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on