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Oltressenda Alta: what to know before buying a home

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

Liveability index free for any address

Search for an address in Oltressenda Alta

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 Beccarelli 1, Oltressenda Alta.

Oltressenda Alta, Nasolino and the Valzurio in the upper Val Seriana

Oltressenda Alta has no single centre: it is a scattered municipality in the upper Val Seriana, made up of small hamlets on the hillside and in the Valzurio, a narrow green side valley. The town hall is in Nasolino, at around seven hundred metres. All around are woods, meadows and mountain huts, and you feel the mountains in every season.

People buying here are mostly after quiet and nature: a holiday home, a hut to restore, or a main home for someone who works in the valley and does not mind driving. For schools, shops and services you go down to the Serio valley floor, and Bergamo takes longer. Roads are narrow and steep, and in winter, in climate zone F, snow and ice have to be reckoned with. For huts and isolated houses, check access, water supply, drainage and the electricity connection before making an offer.

Istat, the national statistics office, counted 136 residents in 2023, 21.8% fewer than the 174 of 2011. The average age is 53.3, against 45.2 in the province of Bergamo, and over-65s make up 39.0%. Declared incomes are below the provincial average.

All 243 municipalities in the province of Bergamo are in seismic zone 3 of the national classification; in Oltressenda Alta the expected ground acceleration is about 0.078 g. For stone houses, the quality of past building work matters more than the hazard itself.

The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps, which help in an area of scattered hamlets and huts to see exactly what you are buying. The report starts from the address and also checks landslides and streams on the official maps.

Key points

  • Scattered municipality in the upper Val Seriana, including the Valzurio.
  • Huts and isolated houses: check access, water and drainage.
  • 136 residents in 2023, over-65s at 39.0%.
  • All 243 Bergamo municipalities in seismic zone 3.

Overview

Oltressenda Alta is a municipality in the province of Bergamo, in Lombardia. At the end of 2023 it had 136 residents, among the smallest in the province (237 of 243).

Earthquakes

For Italy's Civil Protection Department, Oltressenda Alta is in seismic zone 3, a zone where strong earthquakes are possible but rare. All 243 municipalities in the province are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.078 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.

Even in zone 3, seismic standards apply to new buildings: for an older building, ask about the design year and any structural work.

Population

Compared with the 2011 census, the resident population has fallen by 21.8%. The estimated average age is 53 years, higher than the province average (45). 39% of residents are over 65 (the regional figure is 24%). Foreign residents make up 2.9% of the population. On average, a household has 1.8 members.

Income and climate

In tax year 2024, taxpayers in Oltressenda Alta declared an average taxable income of 22,764 euros, below the provincial average (26,939 euros). The Italian average is 24,895 euros.

Oltressenda Alta is in climate zone F, with 3,126 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 737 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 Oltressenda Alta.

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 0.6% of the land in Oltressenda Alta, compared with 12.0% in the province and 12.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Oltressenda Alta is one of the municipalities designated as a radon priority area by the Regione Lombardia in 2023. According to the ISPRA map, the estimated radon emission in the municipality is medium. 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 Oltressenda Alta.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Oltressenda Alta: 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 Oltressenda Alta 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 6 inhabited census areas in Oltressenda Alta. Half of the residents live in areas scoring 58 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 016147. The text on this page is generated automatically from the data.