Castel d'Aiano: what to know before buying a home
A municipality in the province of Bologna, Emilia-Romagna. Official data on earthquakes, population, services and transport.
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Search for an address in Castel d'Aiano
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 Val D' Aneva Labante 1, Castel d'Aiano.
Castel d'Aiano, the high Bologna Apennines near Modena
Castel d'Aiano is a municipality in the high Apennines of the province of Bologna, towards the border with the province of Modena, made up of ridges, chestnut and beech woods, meadows and small hamlets. The main village is at around eight hundred metres, and Bologna is reached by heading down towards the Reno valley, with mountain journey times.
Buyers here often want a holiday home or a rural building with land, or a house to live in away from the city. Either way, winter access, the distance to services, which the report measures from the address, and heating costs all matter: the climate is zone F, the coldest category. Many houses are stone-built, with roofs and windows that need checking.
The population is old. In 2023 there were 1,905 residents, according to Istat, the national statistics office, down 2.4% on 2011. The average age is 51.0, against 46.6 in the Metropolitan City of Bologna, and over-65s are 32.0%, against 24.8%. Foreign residents are 8.7%. Declared incomes are much lower than the provincial average.
For earthquakes, Castel d'Aiano is in seismic zone 3 on the Civil Protection scale, like 42 other municipalities in the province, and the expected acceleration in the built-up area is 0.161 g, a value not to be underestimated. For a stone house, ask whether walls and floors have been tied together and strengthened.
On Apennine slopes, the report reads the official landslide maps for the address. The Revenue Agency publishes cadastral maps and the report reaches the land parcel, isolated rural buildings included.
Key points
- High Bologna Apennines, near the Modena border.
- Climate zone F, the coldest category.
- Over-65s at 32.0%, above the provincial average.
- Seismic zone 3, expected acceleration 0.161 g.
Overview
Castel d'Aiano is a municipality in the province of Bologna, in Emilia-Romagna. At the end of 2023 it had 1,905 residents, among the smallest in the province (53 of 55).
Earthquakes
For Italy's Civil Protection Department, Castel d'Aiano is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (43 of 55) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.161 g, a medium-high 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 (47). 32% of residents are over 65 (the regional figure is 25%). Foreign residents make up 8.7% of the population. On average, a household has 1.8 members.
Income and climate
In tax year 2024, taxpayers in Castel d'Aiano declared an average taxable income of 22,048 euros, below the provincial average (29,157 euros). The Italian average is 24,895 euros.
Castel d'Aiano is in climate zone F, with 3,300 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 805 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Castel d'Aiano has 3 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop, 2 sports facilities and 2 parks and green areas.
The data shows no healthcare facilities within the municipality, against a provincial average of 0.8 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 5.3% of the land in Castel d'Aiano, compared with 9.0% in the province and 9.0% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Castel d'Aiano is not among the radon priority areas designated by the Regione Emilia-Romagna in 2026. 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 Castel d'Aiano.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Castel d'Aiano: 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 Castel d'Aiano 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 60 inhabited census areas in Castel d'Aiano. Half of the residents live in areas scoring 56 or more.
Residents by band
- modest 6.8%
- fair 93.2%
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 037013. The text on this page is generated automatically from the data.