Buying a home in San Siro
1,693 residents at the 2021 census, 1,936 buildings and 18.8 km² of territory, Lombardia.
San Siro is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low. According to ISPRA’s mosaic, 17.3% of the territory of San Siro has high or very high landslide hazard (P3 and P4), with 2.5% of the residents. 42.6% of the territory of San Siro is in the flood area of the medium-probability scenario (P2), with 3.1% of the residents.
Find your address in San Siro
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San Siro compared
| ISPRA indicator | San Siro | CO | Lombardia |
|---|---|---|---|
| Landslide, very high hazard (P4) | 12.3% | 3.2% | 3.7% |
| Landslide, high hazard (P3) | 5% | 4.9% | 2.9% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 2.5% | 0.9% | 0.4% |
| Buildings in landslide areas P3-P4 | 2.4% | 2.2% | 1.1% |
| Flood, high probability (P3) | 42.5% | 9.2% | 7.9% |
| Flood, medium probability (P2) | 42.6% | 10.1% | 10.2% |
| Flood, low probability (P1) | 44.6% | 11.4% | 20.3% |
| Residents in P2 flood areas | 3.1% | 1.7% | 4.4% |
| Buildings in P2 flood areas | 2.4% | 2.1% | 4.7% |
Questions
Which seismic zone is San Siro in?
San Siro is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low.
How much of San Siro is in landslide class P3/P4?
According to ISPRA’s mosaic, 17.3% of the territory of San Siro has high or very high landslide hazard (P3 and P4), with 2.5% of the residents. By share of territory with landslide hazard P3-P4, San Siro ranks 12th of 147 municipalities in the province of Como.
How much of San Siro is in flood scenario P2?
42.6% of the territory of San Siro is in the flood area of the medium-probability scenario (P2), with 3.1% of the residents. By share of territory in the P2 flood area, San Siro ranks 7th of 147 municipalities in the province of Como.
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 |
|---|---|---|---|
| Plesio | 4 | 9% | 0.9% |
| Cremia | 4 | 0.7% | 21.4% |
| Menaggio | 4 | 3.4% | 51.6% |
| Grandola ed Uniti | 4 | 8.8% | 0% |
| Pianello del Lario | 4 | 10.6% | 26.4% |
| Bellano | 4 | 15.2% | 24.3% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on