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Osilo: what to know before buying a home

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

Liveability index free for any address

Search for an address in Osilo

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 Brusco Onnis 1, Osilo.

Osilo, the hilltop village above Sassari

You can see Osilo from far away. The village stands on high ground east of Sassari, at around 600 metres, overlooked by the ruins of a medieval castle linked to the Malaspina family. The view stretches over the countryside of northern Sardinia and, on clear days, to the sea. Sassari is about twenty minutes by car along a hill road.

This is a village of shepherds and farmers, known for its cheeses, with a compact old centre of stone houses built tight together along sloping streets. Buyers find modest prices and many old homes, often needing new wiring, plumbing, roofs and insulation. Out in the countryside there are scattered houses and plots of land; here, check access, water supply and utility connections first.

The population is shrinking and ageing. There are 2,791 residents (2023), down 12.9% since 2011, with an average age of 49.8 against 48.3 for the province. People over 65 make up 29.1%, households have 1.94 members on average and foreign residents are just 1.6%. Declared incomes are below the provincial average.

Sardinia is one of the quietest parts of Italy for earthquakes. Osilo is in seismic zone 4, like every municipality in the province, with an expected ground acceleration of 0.050 g. In stone houses, damp, roofs and the state of the floors matter more.

The climate is zone D in the Italian classification: the altitude brings cooler, windier winters than in Sassari. The Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps and the report finds the parcel from the address.

Key points

  • High ground east of Sassari, around 600 metres
  • Old stone centre below the medieval castle
  • 2,791 residents, down 12.9% since 2011
  • Seismic zone 4, one of Italy's quietest

Overview

Osilo is a municipality in the province of Sassari, in Sardegna. At the end of 2023 it had 2,791 residents, ranked 18 of 66 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Osilo is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. All 66 municipalities in the province are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.050 g, a moderate 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 12.9%. The estimated average age is 50 years, higher than the province average (48). 29% of residents are over 65 (the regional figure is 27%). Foreign residents make up 1.6% of the population. On average, a household has 1.9 members.

Income and climate

In tax year 2024, taxpayers in Osilo declared an average taxable income of 18,646 euros, below the provincial average (21,361 euros). The Italian average is 24,895 euros.

Osilo is in climate zone D, with 2,086 heating degree days: heating may be switched on from 1 November to 15 April, for up to 12 hours a day. The same table puts the town hall at 615 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Osilo has 3 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop and 1 sports facility.

The data shows no healthcare facilities within the municipality, against a provincial average of 0.9 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 2.0% of the land in Osilo, compared with 3.4% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Osilo is not among the radon priority areas designated by the Regione Sardegna in 2022. 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.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Osilo: 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 Osilo 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 35 inhabited census areas in Osilo. Half of the residents live in areas scoring 72 or more.

Residents by band

  • fair 4.2%
  • good 95.8%

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 112038. The text on this page is generated automatically from the data.