Buying a home in Castelnuovo di Porto
8,587 residents at the 2021 census, 1,877 buildings and 30.6 km² of territory, Lazio.
Castelnuovo di Porto is in seismic zone 3 (the region uses the sub-zones 3A): in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 1.4% of the territory of Castelnuovo di Porto has high or very high landslide hazard (P3 and P4), with 0.7% of the residents. 11.4% of the territory of Castelnuovo di Porto is in the flood area of the medium-probability scenario (P2), with 0.6% of the residents.
Find your address in Castelnuovo di Porto
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Castelnuovo di Porto compared
| ISPRA indicator | Castelnuovo di Porto | RM | Lazio |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0.1% | 2.1% | 4.3% |
| Landslide, high hazard (P3) | 1.4% | 0.6% | 1.2% |
| Landslide, areas of attention | 0% | 6.5% | 8.3% |
| Residents in landslide areas P3-P4 | 0.7% | 0.6% | 1.5% |
| Buildings in landslide areas P3-P4 | 0.3% | 1.2% | 3.2% |
| Flood, high probability (P3) | 10.1% | 3.4% | 2.6% |
| Flood, medium probability (P2) | 11.4% | 4.7% | 3.5% |
| Flood, low probability (P1) | 11.9% | 7% | 5.7% |
| Residents in P2 flood areas | 0.6% | 3.6% | 3.2% |
| Buildings in P2 flood areas | 1.6% | 4.5% | 3.4% |
Questions
Which seismic zone is Castelnuovo di Porto in?
Castelnuovo di Porto is in seismic zone 3 (the region uses the sub-zones 3A): in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Castelnuovo di Porto is in landslide class P3/P4?
According to ISPRA’s mosaic, 1.4% of the territory of Castelnuovo di Porto has high or very high landslide hazard (P3 and P4), with 0.7% of the residents. By share of territory with landslide hazard P3-P4, Castelnuovo di Porto ranks 58th of 121 municipalities in the Metropolitan City of Roma, tied with 1 others.
How much of Castelnuovo di Porto is in flood scenario P2?
11.4% of the territory of Castelnuovo di Porto is in the flood area of the medium-probability scenario (P2), with 0.6% of the residents. By share of territory in the P2 flood area, Castelnuovo di Porto ranks 13th 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 |
|---|---|---|---|
| Riano | 3A | 0.5% | 14.7% |
| Morlupo | 3A | 4.9% | 0% |
| Capena | 2B | 1.2% | 28.5% |
| Sacrofano | 3A | 0.6% | 0% |
| Fiano Romano | 2B | 0.3% | 22.2% |
| Magliano Romano | 3A | 0.2% | 0% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on