Castellero: what to know before buying a home
A municipality in the province of Asti, Piemonte. Official data on earthquakes, population, services and transport.
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Search for an address in Castellero
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 Bricco Trombetta 1, Castellero.
Castellero, a hill village close to Asti
If you work in Asti and want a house with some land, Castellero is one of the small hill municipalities a short distance from the town. The village runs along a ridge in the Asti countryside among fields, hazelnut groves and vineyards, with houses scattered along roads that drop towards the valleys. Turin is within driving distance, and commuting to Asti is the usual pattern.
Homes are mostly detached houses and brick farmhouses, some recently renovated, others needing a full refurbishment. The soil on these hills is often clay, so cracks in walls, uneven floors and retaining walls should be checked before you sign. Climate zone E means cold winters, and the energy efficiency of the house affects running costs.
Castellero had 289 residents in 2023, 13 fewer than the 302 of 2011, a fall of 4.3%. The estimated average age, 47.5, is close to the 47.9 of the province of Asti, and over-65s make up 27.7% against 27.3%. Foreign residents account for 6.2%. Declared incomes are above the provincial average, a sign of families working in town.
The municipality is in seismic zone 4, the lowest, like 113 of the 117 municipalities in the province, with expected ground acceleration of about 0.042 g. Slope stability matters more than earthquakes, and the report checks it on the official maps for the address.
Revenue Agency cadastral maps are available, and the report measures the distance from the house to schools, pharmacies and shops.
Key points
- Asti hills, a short drive from the town.
- 289 residents, down 4.3% since 2011.
- Incomes above the provincial average, average age 47.5.
- Seismic zone 4, expected acceleration about 0.042 g.
Overview
Castellero is a municipality in the province of Asti, in Piemonte. At the end of 2023 it had 289 residents, ranked 101 of 117 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Castellero is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. Most municipalities in the province (113 of 117) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.042 g, a low value: the level with a 10% probability of being exceeded in 50 years, on rock.
In zone 4 the risk is low, but for an older building it is still worth asking about the state of the structure.
Population
Compared with the 2011 census, the resident population has fallen by 4.3%. The estimated average age is 47 years, in line with the province. 28% of residents are over 65 (the regional figure is 27%). Foreign residents make up 6.2% of the population. On average, a household has 2.0 members.
Income and climate
In tax year 2024, taxpayers in Castellero declared an average taxable income of 27,030 euros, above the provincial average (24,302 euros). The Italian average is 24,895 euros.
Castellero is in climate zone E, with 2,690 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 247 metres above sea level.
Services
In the Overture Maps data, Castellero has 1 green area.
The data shows no schools within the municipality, against a provincial average of 1.1 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 5.2% of the land in Castellero, compared with 7.3% in the province and 6.7% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Castellero is not among the radon priority areas designated by the Regione Piemonte in 2023. 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 Castellero.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Castellero: 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 Castellero 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 7 inhabited census areas in Castellero. Half of the residents live in areas scoring 58 or more.
Residents by band
- fair 100.0%
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 005026. The text on this page is generated automatically from the data.