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Bosa: what to know before buying a home

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

Liveability index free for any address

Search for an address in Bosa

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 del Carmine 1, Bosa.

Bosa, colourful houses on the Temo below the Malaspina castle

The brightly painted houses of the Sa Costa quarter climb from the river Temo up to the Malaspina castle on the hill of Serravalle: that is the classic view of Bosa, on the west coast of Sardinia. The Temo runs through the town just before reaching the sea and is navigable for its last stretch, which is rare on the island; on the bank opposite the centre stand the old tanneries, a reminder of a trade that kept the town busy for generations.

The coast is close by at Bosa Marina, where many holiday homes and tourist facilities are concentrated, and from here the scenic coast road heads north to Alghero. Winters are mild and summers crowded, so it is worth visiting in both seasons before you buy.

House hunters choose between the historic centre, with narrow, tall houses that often need restoring and have no parking, and the newer areas towards the sea or on the hills. The lower part of town, near the Temo, is where flood hazard needs the closest look, and the report reads it for the individual address.

In 2023 Istat, the national statistics institute, counted 7,398 residents, down 7.8% since 2011. By population Bosa ranks 4 among the municipalities of the province of Oristano. The estimated average age is 48.5, slightly below the province's 49.8, and foreign residents are few, at 2.2%.

Earthquakes are a minimal concern: all 87 municipalities in the province are in seismic zone 4, the lowest class set by the Civil Protection Department (Protezione Civile), and the expected ground acceleration is about 0.050 g. In old houses in the centre, damp, the state of the roof and services, and how render and windows stand up to wind and salt air matter far more.

The Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps and the report goes from the address to the plot.

Key points

  • Painted houses of Sa Costa, the Malaspina castle and the river Temo.
  • Population down 7.8% since 2011; foreign residents 2.2%.
  • Seismic zone 4, like the whole province of Oristano.
  • Lower town near the Temo: check flood hazard by address.

Overview

Bosa is a municipality in the province of Oristano, in Sardegna. At the end of 2023 it had 7,398 residents, among the most populous in the province (4 of 87).

Earthquakes

For Italy's Civil Protection Department, Bosa is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. All 87 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 7.8%. The estimated average age is 48 years, in line with the province. 27% of residents are over 65 (the regional figure is 27%). Foreign residents make up 2.2% of the population. On average, a household has 2.1 members.

Income and climate

In tax year 2024, taxpayers in Bosa declared an average taxable income of 19,219 euros, in line with the province (19,764 euros). The Italian average is 24,895 euros.

Bosa is in climate zone B, with 744 heating degree days: heating may be switched on from 1 December to 31 March, for up to 8 hours a day. The same table puts the town hall at 2 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Bosa has 8 schools and 2 pharmacies. The Overture Maps data also lists 6 grocery shops and supermarkets, 7 healthcare facilities, 5 sports facilities and 3 parks and green areas.

There are 0.3 pharmacies per 1,000 residents, fewer than the province average (0.6).

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 2.1% of the land in Bosa, compared with 3.4% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Bosa is not among the radon priority areas designated by the Regione Sardegna in 2022. 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 Bosa: 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 Bosa 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 43 inhabited census areas in Bosa. Half of the residents live in areas scoring 60 or more.

Residents by band

  • fair 69.9%
  • good 20.6%
  • very good 9.5%

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 115017. The text on this page is generated automatically from the data.