Buying a home in Tolfa
4,789 residents at the 2021 census, 1,625 buildings and 168.3 km² of territory, Lazio.
Tolfa is in seismic zone 3 (the region uses the sub-zones 3B): in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 2.8% of the territory of Tolfa has high or very high landslide hazard (P3 and P4), with 4.7% of the residents. 1.1% of the territory of Tolfa is in the flood area of the medium-probability scenario (P2), with 0.2% of the residents.
Find your address in Tolfa
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Tolfa compared
| ISPRA indicator | Tolfa | RM | Lazio |
|---|---|---|---|
| Landslide, very high hazard (P4) | 2.6% | 2.1% | 4.3% |
| Landslide, high hazard (P3) | 0.2% | 0.6% | 1.2% |
| Landslide, areas of attention | 30.9% | 6.5% | 8.3% |
| Residents in landslide areas P3-P4 | 4.7% | 0.6% | 1.5% |
| Buildings in landslide areas P3-P4 | 3.9% | 1.2% | 3.2% |
| Flood, high probability (P3) | 0.5% | 3.4% | 2.6% |
| Flood, medium probability (P2) | 1.1% | 4.7% | 3.5% |
| Flood, low probability (P1) | 1.3% | 7% | 5.7% |
| Residents in P2 flood areas | 0.2% | 3.6% | 3.2% |
| Buildings in P2 flood areas | 0.3% | 4.5% | 3.4% |
Questions
Which seismic zone is Tolfa in?
Tolfa is in seismic zone 3 (the region uses the sub-zones 3B): in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Tolfa is in landslide class P3/P4?
According to ISPRA’s mosaic, 2.8% of the territory of Tolfa has high or very high landslide hazard (P3 and P4), with 4.7% of the residents. By share of territory with landslide hazard P3-P4, Tolfa ranks 42nd of 121 municipalities in the Metropolitan City of Roma.
How much of Tolfa is in flood scenario P2?
1.1% of the territory of Tolfa is in the flood area of the medium-probability scenario (P2), with 0.2% of the residents. By share of territory in the P2 flood area, Tolfa ranks 36th 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 |
|---|---|---|---|
| Allumiere | 3B | 3.1% | 0.1% |
| Canale Monterano | 3B | 10.3% | 0% |
| Santa Marinella | 3B | 2.1% | 3.8% |
| Manziana | 3B | 1.9% | 0% |
| Blera | 2B | 5.7% | 0% |
| Vejano | 2B-3A | 4% | 0% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on