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Asso: 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 Asso

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 per Caslino 1, Asso.

Asso, in the Vallassina along the river Lambro

The Vallassina is the valley that climbs from Brianza into the Triangolo Lariano, the mountainous wedge between the two southern arms of Lake Como, and Asso is its main town. It stretches along the Lambro, still a young river here, with wooded mountains closing the view on both sides. The railway from Milan through Brianza ends here: Asso is the terminus, which matters for anyone working down on the plain.

The valley floor holds the centre, workshops and blocks of flats, while the slopes have more isolated houses and hamlets reached by climbing roads. Orientation deserves attention, because in a narrow valley some houses get little sun in winter, as do the steep roads when it snows.

In 2023 there were 3,504 residents, down 3.3% since 2011, according to Istat, the national statistics office. The average age is 46.6, almost the same as the province of Como (46.3), and over-65s are 24.6%. Foreign residents are 7.5%.

Earthquake risk is low: all 147 municipalities in the province of Como are in seismic zone 4, the lowest, and in Asso the expected ground acceleration is about 0.046 g. For a mountain house, the roof, insulation and heating system matter more.

Water is the issue to watch. The Lambro and the streams coming down the slopes can rise quickly after heavy rain, and wooded hillsides can slip, so the report checks the official maps for the address. The Revenue Agency publishes the cadastral maps.

Key points

  • Main town of the Vallassina, on the Lambro between Como's lake arms.
  • Terminus of the railway from Milan through Brianza.
  • Seismic zone 4 like all of Como province, acceleration 0.046 g.
  • 3,504 residents, down 3.3% since 2011.

Overview

Asso is a municipality in the province of Como, in Lombardia. At the end of 2023 it had 3,504 residents, ranked 53 of 147 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Asso 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 0.046 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 3.3%. 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 7.5% of the population. On average, a household has 2.3 members.

Income and climate

In tax year 2024, taxpayers in Asso declared an average taxable income of 24,094 euros, below the provincial average (26,761 euros). The Italian average is 24,895 euros.

Asso is in climate zone E, with 2,837 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 427 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Asso has 3 schools and 2 pharmacies. 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 0.5 per 1,000 residents.

Public transport

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

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 12.9% of the land in Asso, 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

Asso 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 open contaminated sites in Asso; one has been cleaned up or closed.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Asso: 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 Asso 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 19 inhabited census areas in Asso. Half of the residents live in areas scoring 74 or more.

Residents by band

  • fair 13.5%
  • good 86.5%

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 013013. The text on this page is generated automatically from the data.