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Erba: 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 Erba

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: Corso Venticinque Aprile 12, Erba.

Erba, between the Brianza lakes and the Lario Triangle

Erba sits halfway between Como and Lecco, where the hills of Brianza run up against the first mountains of the Lario Triangle, the wedge of land between the two arms of Lake Como. South of the centre lie the small lakes of Alserio and Pusiano; to the north, hamlets climb the slopes with more scattered houses and views over the plain. By population it ranks number 4 in the province of Como and serves as a service centre for many nearby villages.

Commuters to Milan have the train. The Ferrovienord line from Milan to Asso stops at Erba, and the public timetables also show a bus service. Como and Lecco are a short drive away. House hunters will find flats in the centre near the station and detached houses on the slopes towards the mountains, where gradient and winter access count.

At the end of 2023 Erba had 16,236 residents, down 1.6% on 2011 (Istat, the national statistics office). It is older than its province, with 27.4% of residents over 65 against 24.1%, and foreign residents make up 9.4%. Declared incomes are above the provincial average. There are 21 healthcare sites on record, 1.29 per 1,000 residents against 0.59 in the province, and sports facilities, supermarkets and cafés are also denser than average.

Seismic risk is low. The whole province of Como is in zone 4, the least hazardous, and expected ground acceleration in the built-up area is about 0.045 g. In homes built between the 1960s and the 1980s, insulation, heating and wiring, and the service charges for the block usually matter more.

On the slopes towards the mountains, landslides and surface water are the things to check; near the lakes and streams, the low-lying ground. The report reads the official maps for the exact address and finds the plot on the Revenue Agency (Agenzia delle Entrate) cadastral maps.

Key points

  • Between Como and Lecco, below the Lario Triangle mountains.
  • Ferrovienord trains to Milan on the Asso line.
  • Over-65s at 27.4%, above 24.1% in the province.
  • Seismic zone 4, the lowest, like the whole province.

Overview

Erba is a municipality in the province of Como, in Lombardia. At the end of 2023 it had 16,236 residents, among the most populous in the province (4 of 147).

Earthquakes

For Italy's Civil Protection Department, Erba 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 0.045 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 1.6%. The estimated average age is 48 years, higher than the province average (46). 27% of residents are over 65 (the regional figure is 24%). Foreign residents make up 9.4% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Erba declared an average taxable income of 28,000 euros, in line with the province (26,761 euros). The Italian average is 24,895 euros.

Erba is in climate zone E, with 2,524 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 320 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Erba has 18 schools and 5 pharmacies. The Overture Maps data also lists 12 grocery shops and supermarkets, 21 healthcare facilities, 20 sports facilities and 4 parks and green areas.

There are 1.3 healthcare facilities per 1,000 residents, more than the province average (0.6).

Public transport

Within the municipality there are 1 public transport stops, served by 1 bus line, 1 train line. That is about 0.1 stops per 1,000 residents.

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 27.1% of the land in Erba, compared with 12.3% in the province and 12.2% in the region. In 2024 built-up land grew by 1.2 hectares.

Radon and contaminated sites

Erba 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 Erba.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Erba: 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 Erba 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 53 inhabited census areas in Erba. Half of the residents live in areas scoring 69 or more.

Residents by band

  • fair 16.2%
  • good 66.1%
  • very good 17.6%

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 013095. The text on this page is generated automatically from the data.