Buying a home in Grezzago
3,071 residents at the 2021 census, 478 buildings and 2.5 km² of territory, Lombardia.
Grezzago is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 0% of the territory of Grezzago has high or very high landslide hazard (P3 and P4), with 0% of the residents. 2.9% of the territory of Grezzago is in the flood area of the medium-probability scenario (P2), with 3.6% of the residents.
Find your address in Grezzago
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Grezzago compared
| ISPRA indicator | Grezzago | MI | Lombardia |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0% | 0% | 3.7% |
| Landslide, high hazard (P3) | 0% | 0% | 2.9% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 0% | 0% | 0.4% |
| Buildings in landslide areas P3-P4 | 0% | 0% | 1.1% |
| Flood, high probability (P3) | 0% | 4% | 7.9% |
| Flood, medium probability (P2) | 2.9% | 6.7% | 10.2% |
| Flood, low probability (P1) | 2.9% | 10.9% | 20.3% |
| Residents in P2 flood areas | 3.6% | 3.8% | 4.4% |
| Buildings in P2 flood areas | 3.5% | 3.8% | 4.7% |
Questions
Which seismic zone is Grezzago in?
Grezzago is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Grezzago is in landslide class P3/P4?
According to ISPRA’s mosaic, 0% of the territory of Grezzago has high or very high landslide hazard (P3 and P4), with 0% of the residents. In the Metropolitan City of Milano, 132 of 133 municipalities have no territory with landslide hazard P3-P4.
How much of Grezzago is in flood scenario P2?
2.9% of the territory of Grezzago is in the flood area of the medium-probability scenario (P2), with 3.6% of the residents. By share of territory in the P2 flood area, Grezzago ranks 52nd of 133 municipalities in the Metropolitan City of Milano.
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 |
|---|---|---|---|
| Trezzano Rosa | 3 | 0% | 5.7% |
| Pozzo d’Adda | 3 | 0% | 0.2% |
| Trezzo sull’Adda | 3 | 0.2% | 7.8% |
| Basiano | 3 | 0% | 1.4% |
| Vaprio d’Adda | 3 | 0% | 9.4% |
| Roncello | 3 | 0% | 1.2% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on