Skip to content
Vicinalia
Italiano Sign up

Semiana: what to know before buying a home

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

Liveability index free for any address

Search for an address in Semiana

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 Vittorio Veneto 1, Semiana.

Semiana, a Lomellina village among rice fields and canals

Semiana is a small municipality in the Lomellina, the plain of the province of Pavia lying between the Ticino, the Po and the Sesia. The landscape is flat and open, divided into large rice fields, with canals and irrigation ditches marking the field boundaries. The village is little more than a handful of streets around the church, surrounded by farmsteads.

For buyers, what matters most is the distance from services, which are in the larger Lomellina towns, and the condition of the buildings. Many houses are old rural homes and courtyard houses, with thick walls and ground floors exposed to damp rising from the ground. Check walls, floors, drains and roofs; the report also checks the official flood maps for the address, useful on a plain crossed by watercourses.

The population has fallen considerably. Istat, the national statistics office, counted 198 residents in 2023, 59 fewer than the 257 of 2011, a fall of 23.0%. The estimated average age is 52.3 against 47.1 in the province of Pavia, over-65s make up 31.8% and foreign residents 8.1%.

The province of Pavia is split between two seismic zones: 157 municipalities are in zone 3 and 27 in zone 4. Semiana is among the latter, in zone 4, with an expected ground acceleration of about 0.048 g. In practice earthquakes weigh little, while damp and upkeep weigh a lot. Revenue Agency cadastral maps are published, and the report traces the land parcel from the address.

Key points

  • Farming village in the Lomellina, among rice fields and canals.
  • 198 residents in 2023, down 23.0% since 2011.
  • Average age 52.3, over-65s at 31.8%.
  • Seismic zone 4, like 27 of 184 municipalities in the province.

Overview

Semiana is a municipality in the province of Pavia, in Lombardia. At the end of 2023 it had 198 residents, among the smallest in the province (173 of 184).

Earthquakes

For Italy's Civil Protection Department, Semiana is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. Only 27 of 184 municipalities in the province are in zone 4.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.048 g, a low 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 23.0%. The estimated average age is 52 years, higher than the province average (47). 32% of residents are over 65 (the regional figure is 24%). Foreign residents make up 8.1% of the population. On average, a household has 1.9 members.

Income and climate

In tax year 2024, taxpayers in Semiana declared an average taxable income of 24,764 euros, below the provincial average (26,290 euros). The Italian average is 24,895 euros.

Semiana is in climate zone E, with 2,715 heating degree days: heating may be switched on from 15 October to 15 April, for up to 14 hours a day. The same table puts the town hall at 97 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Semiana has 1 pharmacy. The Overture Maps data also lists 1 grocery shop.

The data shows no schools within the municipality, against a provincial average of 0.9 per 1,000 residents.

Public transport

The open timetables available for the area do not list any stops within the territory of Semiana.

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 5.3% of the land in Semiana, compared with 9.6% in the province and 12.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Semiana is not among the radon priority areas designated by the Regione Lombardia in 2023. 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 Semiana.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Semiana: 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 Semiana 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 9 inhabited census areas in Semiana. Half of the residents live in areas scoring 68 or more.

Residents by band

  • fair 7.6%
  • good 92.4%

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 018148. The text on this page is generated automatically from the data.