Gragnano Trebbiense: what to know before buying a home
A municipality in the province of Piacenza, Emilia-Romagna. Official data on earthquakes, population, services and transport.
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Search for an address in Gragnano Trebbiense
The report looks at the exact point: landslide and flood risk, seismic zone, price per square metre for the area, services and nearby stops.
For example: Via Roma 1, Gragnano Trebbiense.
Gragnano Trebbiense, the Trebbia plain near Piacenza
The name tells you where you are. Gragnano Trebbiense lies on the plain west of Piacenza, on the left bank of the Trebbia, the wide, gravelly river that comes down from the Apennines. The provincial capital is a few kilometres away, the first hills of the Tidone and Trebbia valleys are visible to the south, and the municipality is made up of fields, courtyard farmsteads and scattered hamlets.
In recent years the town has drawn families who work in Piacenza, in logistics and at local firms, and who want a house of their own at lower prices than in the city. Estates of detached and semi-detached houses have grown up beside the centre; in the countryside there are traditional Piacenza farmsteads needing renovation, large and with restoration costs that need careful sums.
The figures reflect this growth. In 2023 there were 4,573 residents, up 4.3% on 2011. The average age is 44.3, against 46.7 for the province, and over-65s make up 20.9%, well below the Piacenza average (25.3%). Foreign residents account for 13.3%.
All 46 municipalities in the province of Piacenza are in seismic zone 3 of the Civil Protection classification, and in Gragnano the expected ground acceleration is about 0.096 g. For newer houses, ask for the structural design; for brick farmsteads, check for cracks and how walls and floors are tied together. The Trebbia deserves a closer look. The river has a wide, shifting bed and its floods can reach areas close to the channel, as can the irrigation canals on the plain. The report checks the official flood maps for the address.
Key points
- Plain west of Piacenza, on the left bank of the Trebbia.
- 4,573 residents, up 4.3% since 2011.
- Over-65s at 20.9%, against 25.3% in the province.
- Seismic zone 3; Trebbia floods worth checking.
Overview
Gragnano Trebbiense is a municipality in the province of Piacenza, in Emilia-Romagna. At the end of 2023 it had 4,573 residents, ranked 20 of 46 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Gragnano Trebbiense is in seismic zone 3, a zone where strong earthquakes are possible but rare. All 46 municipalities in the province are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.096 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
Even in zone 3, seismic standards apply to new buildings: for an older building, ask about the design year and any structural work.
Population
Compared with the 2011 census, the resident population has grown by 4.3%. The estimated average age is 44 years, lower than the province average (47). 21% of residents are over 65 (the regional figure is 25%). Foreign residents make up 13.3% of the population. On average, a household has 2.3 members.
Income and climate
In tax year 2024, taxpayers in Gragnano Trebbiense declared an average taxable income of 25,868 euros, in line with the province (26,934 euros). The Italian average is 24,895 euros.
Gragnano Trebbiense is in climate zone E, with 2,563 heating degree days: heating may be switched on from 15 October to 15 April, for up to 14 hours a day. The same table puts the town hall at 83 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Gragnano Trebbiense has 5 schools and 1 pharmacy. The Overture Maps data also lists 3 grocery shops and supermarkets, 1 healthcare facility and 1 sports facility.
There are 0.2 healthcare facilities per 1,000 residents, fewer than the province average (0.6).
Public transport
We do not yet have open public transport timetables for this municipality: the report says so explicitly, without inventing distances.
How built-up it is
Buildings, roads, car parks and other sealed surfaces cover 10.4% of the land in Gragnano Trebbiense, compared with 7.7% in the province and 9.0% in the region. In 2024 built-up land grew by 3.6 hectares.
Radon and contaminated sites
Gragnano Trebbiense is not among the radon priority areas designated by the Regione Emilia-Romagna in 2026. Radon varies from building to building and can only be known by measuring it, especially on ground floors and in basements.
Official databases list no open contaminated sites in Gragnano Trebbiense; one has been cleaned up or closed.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Gragnano Trebbiense: the report checks the address against the ISPRA maps.
House prices
The Revenue Agency's price ranges per square metre (OMI) apply to zones, not to whole municipalities: the report gives the range for the address's zone.
Land registry
The cadastral maps for Gragnano Trebbiense are public: from the address the report finds the sheet and parcel number.
Liveability area by area
The Vicinalia liveability index runs from 0 to 100 and looks at the place, not the people who live there: services within walking distance, transport, green space, natural hazards, air, quiet, buildings and connection. Here it is worked out at the centre of each of the 55 inhabited census areas in Gragnano Trebbiense. Half of the residents live in areas scoring 65 or more.
Residents by band
- fair 48.1%
- good 51.9%
Vicinalia index by census area, licence CC BY-SA 4.0. Data: IdroGEO ISPRA (2026), Istat, INGV, EEA, AGCOM, Overture Maps and OpenStreetMap.
The colour is the value at the centre of the area. For an exact address, search for it above: the free check looks at that exact point. How the index is worked out
Data sources
- Seismic classification of municipalities, Dipartimento della Protezione Civile. Licence CC BY 4.0, updated to 2025-05.
- MPS04 seismic hazard model, INGV. Licence CC BY 4.0, 2004 model.
- Data by census section, Istat. Licence CC BY 4.0, residents at the end of 2023, compared with the 2011 census.
- Places, Overture Maps Foundation. Licence CDLA Permissive 2.0 and others depending on provider, release 2026-10-21.0.
- Income and main IRPEF variables by municipality, MEF, Dipartimento delle Finanze. Licence CC BY 3.0 IT, tax year 2024.
- Climate zones and heating degree days of municipalities (Presidential Decree 412/1993, Annex A), Normattiva. Licence CC BY 4.0, current text.
- Land take, territorial dynamics and ecosystem services, ISPRA e SNPA. Licence CC BY 4.0, 2024 data.
- Predictive radon map by municipality, ISPRA. Licence CC BY 4.0, version 2022-11.
- Radon priority areas (Legislative Decree 101/2020), Regione Emilia-Romagna, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2026.
- Contaminated sites, ISPRA, MOSAICO - Banca dati nazionale dei siti oggetto di procedimento di bonifica. Licence CC BY 4.0, updated to 12 November 2026.
- Liveability index by census area, Vicinalia, from the data in the report sections. Licence CC BY-SA 4.0, worked out on 30 September 2026.
- List of Italian municipalities, Istat. Licence CC BY 4.0, updated to 21 February 2026.
ISTAT code 033024. The text on this page is generated automatically from the data.