Skip to content
Vicinalia
Italiano Sign up

Siamanna: 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 Siamanna

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 Sardegna 1, Siamanna.

Siamanna, a small farming village inland from Oristano

Siamanna lives in close contact with Oristano: it is a small farming village inland, at the point where the plain begins to rise towards the first hills. The village is compact, with countryside all around. Secondary schools, the hospital, the railway station and larger shops are in Oristano, the provincial capital, a short drive away.

For house hunters, the advantage is the quiet of a village with a town within easy reach. Traditional houses often have thick walls and an inner courtyard: attractive to restore, but to be checked for rising damp, the roof and the wiring and plumbing. This is climate zone C, with mild winters and very hot summers, so shade, insulation and good cooling all matter.

Istat, the national statistics office, counted 752 residents in 2023, against 824 in 2011: a fall of 8.7%. The average age is 51.3, against 49.8 in the province of Oristano, and over-65s make up 34.0%, more than the provincial 29.5%. Foreign residents are just 1.2%. Average declared income is in line with the provincial figure.

Earthquakes are not a concern: all 87 municipalities in the province are in seismic zone 4, the lowest, and the expected ground acceleration in Siamanna is about 0.050 g. Water is more worth a look: on low ground near canals and streams, the report checks the address against the official flood maps.

The Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps for the municipality, and from the address the report reaches the land parcel and the data for that plot.

Key points

  • Inland farming village, with Oristano close by.
  • Population down 8.7% since 2011.
  • Over-65s at 34.0%, against 29.5% in the province.
  • All 87 municipalities in the province in seismic zone 4.

Overview

Siamanna is a municipality in the province of Oristano, in Sardegna. At the end of 2023 it had 752 residents, ranked 46 of 87 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Siamanna 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 8.7%. The estimated average age is 51 years, higher than the province average (50). 34% of residents are over 65 (the regional figure is 27%). Foreign residents make up 1.2% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Siamanna declared an average taxable income of 19,457 euros, in line with the province (19,764 euros). The Italian average is 24,895 euros.

Siamanna is in climate zone C, with 1,026 heating degree days: heating may be switched on from 15 November to 31 March, for up to 10 hours a day. The same table puts the town hall at 49 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Siamanna has 1 school and 1 pharmacy. The Overture Maps data also lists 1 sports facility.

The data shows no grocery shops and supermarkets 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 2.4% of the land in Siamanna, compared with 3.4% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Siamanna 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 low. 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 Siamanna: 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 Siamanna 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 10 inhabited census areas in Siamanna. Half of the residents live in areas scoring 66 or more.

Residents by band

  • fair 44.8%
  • good 55.2%

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

ISTAT code 115064. The text on this page is generated automatically from the data.