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Osiglia: what to know before buying a home

A municipality in the province of Savona, Liguria. Official data on earthquakes, population, services and transport.

Liveability index free for any address

Search for an address in Osiglia

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: Localita' Barberis 1, Osiglia.

Osiglia, the lake and woods of the upper Val Bormida

Osiglia is best known for its lake, a reservoir ringed by woods that draws people up from the coast in summer in search of cooler air. The village lies in the upper Val Bormida, on the northern side of the Ligurian Apennines in the province of Savona: the sea is beyond the watershed and the climate is already a mountain one. It is in climate zone F, with long winters and the chance of snow.

The market is made up of village houses, small hamlets and second homes near the water. If you are buying to live here all year, factor in mountain roads, basic services and the need for a car for every journey; if you are buying for summer, see the house in winter too, to judge damp, heating costs and access in snow. Near the lake and the streams, the report checks flood hazard on the official maps for the individual address.

In 2023, 434 people lived in Osiglia, 7.5% fewer than in 2011. The estimated average age is 53.1, higher than the provincial 49.7, and over-65s make up 35.5%. Foreign residents account for 15.7%. Declared incomes are below the average for the province.

Earthquake hazard is low: the municipality is in seismic zone 3 of the national classification kept by the Civil Protection Department, like 45 other municipalities in the province, with an expected ground acceleration in the built-up area of about 0.067 g. In older houses, the roof, walls set against the hillside and the services are the first things to check.

Cadastral maps are published by the Revenue Agency (Agenzia delle Entrate), and the report traces the address back to its land parcel. On the wooded slopes, landslide hazard is read point by point from the official maps.

Key points

  • Upper Val Bormida village with a reservoir among the woods.
  • Climate zone F: see the house in winter as well.
  • Foreign residents at 15.7%, over-65s at 35.5%.
  • Seismic zone 3, expected acceleration about 0.067 g.

Overview

Osiglia is a municipality in the province of Savona, in Liguria. At the end of 2023 it had 434 residents, ranked 58 of 69 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Osiglia is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (46 of 69) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.067 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 7.5%. The estimated average age is 53 years, higher than the province average (50). 35% of residents are over 65 (the regional figure is 29%). Foreign residents make up 15.7% of the population. On average, a household has 1.8 members.

Income and climate

In tax year 2024, taxpayers in Osiglia declared an average taxable income of 19,775 euros, below the provincial average (24,469 euros). The Italian average is 24,895 euros.

Osiglia is in climate zone F, with 3,044 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 715 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Osiglia has 1 school and 1 pharmacy.

The data shows no grocery shops and supermarkets 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 1.9% of the land in Osiglia, compared with 6.7% in the province and 7.3% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Osiglia is one of the municipalities designated as a radon priority area by the Regione Liguria in 2026. According to the ISPRA map, the estimated radon emission in the municipality is medium. 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 Osiglia.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Osiglia: 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 Osiglia 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 14 inhabited census areas in Osiglia. Half of the residents live in areas scoring 60 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

ISTAT code 009046. The text on this page is generated automatically from the data.