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Trezzone: what to know before buying a home

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

Liveability index free for any address

Search for an address in Trezzone

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 Regina 1, Trezzone.

Trezzone, on the slopes of the north-western shore of Lake Como

Up in the Alto Lario, the northern part of Lake Como, Trezzone occupies the slopes above the western shore, with its centre at about four hundred and thirty metres. The land rises from the lake towards the mountains, with houses gathered in the old core, woods and meadows. A few minutes' drive takes you down to the lakeside villages, with shops, schools and the Regina road running towards Como.

Here the population is holding steady. In 2023 Istat, the national statistics office, counted 239 residents against 237 in 2011, a change of +0.8%, which is practically stable. The estimated average age, 45.8, is in line with the province (46.3), and over-65s make up 26.4%. Foreign residents account for 2.1%.

Homes are mainly family houses and stone village houses, some renovated with lake views, and the market moves slowly. A buyer should check access, often on narrow, steep roads, parking and the state of the retaining walls around the house. Average declared incomes are below the provincial average.

Earthquake risk is low: all 147 municipalities in the province of Como are in seismic zone 4 on the Civil Protection scale, and here the expected ground acceleration is about 0.043 g. On the hillside, landslides and mountain streams matter more, and the report checks them on the official maps for the address. Cadastral maps are published by the Revenue Agency (Agenzia delle Entrate).

Key points

  • Small village on the slopes of the north-western shore of Lake Como.
  • 239 residents in 2023, population nearly unchanged since 2011.
  • Average age 45.8, in line with the province.
  • All 147 Como municipalities in seismic zone 4.

Overview

Trezzone is a municipality in the province of Como, in Lombardia. At the end of 2023 it had 239 residents, among the smallest in the province (137 of 147).

Earthquakes

For Italy's Civil Protection Department, Trezzone is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. All 147 municipalities in the province are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.043 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 number of residents is nearly unchanged. The estimated average age is 46 years, in line with the province. 26% of residents are over 65 (the regional figure is 24%). Foreign residents make up 2.1% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Trezzone declared an average taxable income of 22,903 euros, below the provincial average (26,761 euros). The Italian average is 24,895 euros.

Trezzone is in climate zone E, with 2,680 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 430 metres above sea level.

Services

In the Overture Maps data, Trezzone has 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 Trezzone.

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 3.1% of the land in Trezzone, compared with 12.3% in the province and 12.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Trezzone 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 Trezzone.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Trezzone: 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 Trezzone 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 2 inhabited census areas in Trezzone. Half of the residents live in areas scoring 62 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 013226. The text on this page is generated automatically from the data.