Buying a home in San Gregorio da Sassola
1,457 residents at the 2021 census, 577 buildings and 35.5 km² of territory, Lazio.
San Gregorio da Sassola is in seismic zone 2 (the region uses the sub-zones 2B): in this zone strong earthquakes are possible. According to ISPRA’s mosaic, 0.2% of the territory of San Gregorio da Sassola has high or very high landslide hazard (P3 and P4), with 1.6% of the residents. 0.7% of the territory of San Gregorio da Sassola is in the flood area of the medium-probability scenario (P2), with 0.1% of the residents.
Find your address in San Gregorio da Sassola
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San Gregorio da Sassola compared
| ISPRA indicator | San Gregorio da Sassola | RM | Lazio |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0% | 2.1% | 4.3% |
| Landslide, high hazard (P3) | 0.2% | 0.6% | 1.2% |
| Landslide, areas of attention | 0% | 6.5% | 8.3% |
| Residents in landslide areas P3-P4 | 1.6% | 0.6% | 1.5% |
| Buildings in landslide areas P3-P4 | 1.9% | 1.2% | 3.2% |
| Flood, high probability (P3) | 0.7% | 3.4% | 2.6% |
| Flood, medium probability (P2) | 0.7% | 4.7% | 3.5% |
| Flood, low probability (P1) | 1.2% | 7% | 5.7% |
| Residents in P2 flood areas | 0.1% | 3.6% | 3.2% |
| Buildings in P2 flood areas | 0% | 4.5% | 3.4% |
Questions
Which seismic zone is San Gregorio da Sassola in?
San Gregorio da Sassola is in seismic zone 2 (the region uses the sub-zones 2B): in this zone strong earthquakes are possible.
How much of San Gregorio da Sassola is in landslide class P3/P4?
According to ISPRA’s mosaic, 0.2% of the territory of San Gregorio da Sassola has high or very high landslide hazard (P3 and P4), with 1.6% of the residents. By share of territory with landslide hazard P3-P4, San Gregorio da Sassola ranks 101st of 121 municipalities in the Metropolitan City of Roma, tied with 1 others.
How much of San Gregorio da Sassola is in flood scenario P2?
0.7% of the territory of San Gregorio da Sassola 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, San Gregorio da Sassola ranks 41st of 121 municipalities in the Metropolitan City of Roma.
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 |
|---|---|---|---|
| Casape | 2B | 0.4% | 0% |
| Poli | 2B | 3.2% | 0.2% |
| Castel Madama | 2B | 0.2% | 2.2% |
| Gallicano nel Lazio | 2B | 0.2% | 0% |
| Ciciliano | 2B | 1.3% | 0% |
| Capranica Prenestina | 2B | 8.2% | 0% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on