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Castelseprio: what to know before buying a home

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

Liveability index free for any address

Search for an address in Castelseprio

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 Adda 56, Castelseprio.

Castelseprio, the Lombard castrum above the Olona

Above the Olona valley, between Varese and Tradate, the remains of the castrum of Castelseprio and the church of Santa Maria foris portas, with its early medieval frescoes, are part of the UNESCO site for the Lombards in Italy. The archaeological park sits on a wooded plateau; the village itself is a short way off, among village houses, small villas and fields.

It is a residential municipality in the area between Varese, Saronno and the northern Milan area, and residents often work elsewhere and travel by car. Average incomes are slightly above the province's. For buyers, what matters is the type of house, mostly detached, the state of insulation and heating, and, for houses near the woods or the edge of the valley, the slope of the ground.

There are 1,331 residents (2023), up 3.9% on 2011 according to Istat, the national statistics office. The average age is 47.1, almost the same as the province of Varese (46.5), over-65s are 24.9% and foreign residents 2.4%.

All 136 municipalities in the province are in seismic zone 4, the lowest class, and here the expected ground acceleration is 0.038 g, so earthquakes weigh little in the choice.

With the Olona at the bottom of the valley and wooded slopes, the report checks the official flood and landslide maps for the address, and finds the parcel on the Revenue Agency (Agenzia delle Entrate) maps.

Key points

  • Lombard UNESCO site above the Olona valley.
  • 1,331 residents, up 3.9% since 2011.
  • Seismic zone 4, like all 136 in the province.
  • Houses near the valley edge: check the slope.

Overview

Castelseprio is a municipality in the province of Varese, in Lombardia. At the end of 2023 it had 1,331 residents, ranked 108 of 136 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Castelseprio is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. All 136 municipalities in the province are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.038 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 grown by 3.9%. The estimated average age is 47 years, in line with the province. 25% of residents are over 65 (the regional figure is 24%). Foreign residents make up 2.4% of the population. On average, a household has 2.3 members.

Income and climate

In tax year 2024, taxpayers in Castelseprio declared an average taxable income of 28,170 euros, in line with the province (27,186 euros). The Italian average is 24,895 euros.

Castelseprio is in climate zone E, with 2,572 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 310 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Castelseprio has 2 schools and 1 pharmacy. The Overture Maps data also lists 1 green area.

The data shows no grocery shops and supermarkets within the municipality, against a provincial average of 0.4 per 1,000 residents.

Public transport

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

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 18.7% of the land in Castelseprio, compared with 21.1% in the province and 12.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Castelseprio 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 Castelseprio.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Castelseprio: 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 Castelseprio 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 7 inhabited census areas in Castelseprio. Half of the residents live in areas scoring 56 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 012044. The text on this page is generated automatically from the data.