Pietra Marazzi: what to know before buying a home
A municipality in the province of Alessandria, Piemonte. Official data on earthquakes, population, services and transport.
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Search for an address in Pietra Marazzi
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, Pietra Marazzi.
Pietra Marazzi, between the Tanaro plain and Alessandria
Alessandria is right next door, and for people living in Pietra Marazzi the provincial capital is the place for work, school and shopping. The village lies between the Tanaro plain and the first hills, at about 100 metres, with a small centre, village houses, detached homes with gardens and farmland around. In practice it is a residential municipality on the edge of the city.
Buyers here usually want a detached house with a garden a short distance from Alessandria. The things to check are typical of the Po plain: damp in the walls of older houses, insulation and energy rating in detached homes built a few decades ago, and climate zone E with foggy winters. Near the river, the height of the ground the house stands on matters too.
There are 878 residents (2023), slightly down since 2011, by 2.4%, according to Istat, the national statistics institute. The estimated average age is 51.1 against 48.9 in the province, and over-65s are 30.2%, against 28.6%. Foreign residents are 5.0% and households average 2.14 people. Declared incomes are well above the average for the province of Alessandria.
The Civil Protection department places the municipality in seismic zone 3, like 127 of the 187 municipalities in the province, with a low expected ground acceleration of about 0.059 g. For a house from the 1970s or 1980s, the state of services and roof matters more.
The Tanaro and the canals on the plain make it important to check flood hazard for the individual address, as well as landslide hazard on the hillsides: the report uses the official maps. The Revenue Agency publishes the cadastral maps, so the address can be traced to its land parcel.
Key points
- Residential municipality on the edge of Alessandria.
- Declared incomes well above the provincial average.
- 878 residents, down 2.4% since 2011.
- Seismic zone 3; check flood hazard near the Tanaro.
Overview
Pietra Marazzi is a municipality in the province of Alessandria, in Piemonte. At the end of 2023 it had 878 residents, ranked 81 of 187 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Pietra Marazzi is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (127 of 187) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.059 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 fallen by 2.4%. The estimated average age is 51 years, higher than the province average (49). 30% of residents are over 65 (the regional figure is 27%). Foreign residents make up 5.0% of the population. On average, a household has 2.1 members.
Income and climate
In tax year 2024, taxpayers in Pietra Marazzi declared an average taxable income of 38,118 euros, above the provincial average (25,143 euros). The Italian average is 24,895 euros.
Pietra Marazzi is in climate zone E, with 2,559 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 95 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Pietra Marazzi has 1 pharmacy. The Overture Maps data also lists 1 sports facility.
The data shows no schools within the municipality, against a provincial average of 1.0 per 1,000 residents.
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 7.2% of the land in Pietra Marazzi, compared with 7.2% in the province and 6.7% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Pietra Marazzi is not among the radon priority areas designated by the Regione Piemonte in 2023. According to the ISPRA map, the estimated radon emission in the municipality is low. 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 contaminated sites in Pietra Marazzi.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Pietra Marazzi: 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 Pietra Marazzi 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 11 inhabited census areas in Pietra Marazzi. Half of the residents live in areas scoring 57 or more.
Residents by band
- modest 0.9%
- fair 99.1%
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 Piemonte, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2023.
- Contaminated sites, Regione Piemonte, Anagrafe regionale dei siti contaminati (ASCO). Licence CC BY 4.0, updated to 9 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 006129. The text on this page is generated automatically from the data.