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Colonno: 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 Colonno

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 Statale 1, Colonno.

Colonno, hillside homes on the western shore of Lake Como

On the western shore of Lake Como, Colonno occupies a narrow strip of land squeezed between the water and the mountain. Houses climb the slope above the Statale Regina, the road that runs along the lake, and many have a view of the water. The Greenway del Lago di Como, a footpath that follows the shore northwards, starts in Colonno, so in summer the village sees a steady flow of walkers and visitors.

Buying here means dealing with gradients. Many homes are reached by steps or narrow lanes, parking is often a problem, and renovation costs more when materials have to be carried in by hand. The report measures the elevation and slope of the ground at the address and checks the official maps for landslide hazard on the hillside and flood hazard near the lake and streams.

The population has fallen: in 2023 there were 434 residents, down 18.0% on 2011. The estimated average age is 52.0, against 46.3 for the province of Como, and over-65s make up 32.0%. Foreign residents reach 15.0%. Declared incomes are below the provincial average, and climate zone E means cold winters, softened by the lake.

Earthquakes are not a major concern. All 147 municipalities in the province of Como are in seismic zone 4, the lowest in the national classification kept by the Civil Protection Department, and the expected ground acceleration in the built-up area is about 0.040 g. In a lakeside house, damp, the roof, walls set against the slope and drainage matter more.

The Revenue Agency (Agenzia delle Entrate) publishes Colonno's cadastral maps, so the report goes from the address to the land parcel, which helps in a village where the boundaries between one terrace and the next are not always obvious.

Key points

  • Hillside village between lake and mountain, on the Regina road.
  • All 147 municipalities in the province in seismic zone 4.
  • Population down 18.0% since 2011, foreign residents 15.0%.
  • Slope, landslides and access to check at the address.

Overview

Colonno is a municipality in the province of Como, in Lombardia. At the end of 2023 it had 434 residents, ranked 130 of 147 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Colonno 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 0.040 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 18.0%. The estimated average age is 52 years, higher than the province average (46). 32% of residents are over 65 (the regional figure is 24%). Foreign residents make up 15.0% of the population. On average, a household has 1.8 members.

Income and climate

In tax year 2024, taxpayers in Colonno declared an average taxable income of 23,346 euros, below the provincial average (26,761 euros). The Italian average is 24,895 euros.

Colonno is in climate zone E, with 2,375 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 215 metres above sea level.

Services

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 Colonno.

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 2.3% of the land in Colonno, 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

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

Official databases list no contaminated sites in Colonno.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Colonno: 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 Colonno 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 5 inhabited census areas in Colonno. Half of the residents live in areas scoring 45 or more.

Residents by band

  • modest 97.5%
  • fair 2.5%

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 013074. The text on this page is generated automatically from the data.