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Sarre: what to know before buying a home

A municipality in the province of Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste. Official data on earthquakes, population, services and transport.

Liveability index free for any address

Search for an address in Sarre

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: Frazione Saint- Maurice 1, Sarre.

Sarre, the castle and the Dora valley next to Aosta

Sarre borders Aosta to the west and is the second most populous municipality in the Aosta Valley after the regional capital. Its territory runs from the floor of the Dora Baltea valley, where the main road and the motorway to Mont Blanc pass, up to sunny slopes of meadows, orchards and scattered villages. On the hill above the road stands the castle of Sarre, once a royal hunting lodge of the House of Savoy and now a museum.

People who live in Sarre almost always work in Aosta, a few minutes away, and rely on the city for secondary schools, the hospital and shops. The municipality has no single centre: it is made up of hamlets, each with its own character, from residential areas on the valley floor to mountain villages higher up. Houses and prices vary greatly between hamlets, and between the sunny and shaded sides of the valley.

Istat, the national statistics office, recorded 4,787 residents in 2023, down 1.4% on 2011. The average age is 46.5, close to the regional figure, 23.2% are over 65 and households average 2.11 people. Declared incomes are slightly above the Aosta Valley average.

All 74 municipalities in the Aosta Valley are in seismic zone 3 under the Civil Protection Department classification, and expected ground acceleration here is about 0.100 g. At around 640 metres at the town hall, and higher up, winters are cold, so insulation, the roof and the heating system matter.

In the mountains, natural hazards come with the slope: landslides, debris flows along side streams and, higher up, avalanches. On the valley floor, the areas near the Dora. The report checks the official maps at the address and uses the Revenue Agency cadastre to trace the plot.

Key points

  • Borders Aosta; the region's second municipality by population.
  • Castle of Sarre, a former Savoy royal hunting lodge.
  • 4,787 residents, down 1.4% since 2011.
  • Seismic zone 3, like the whole Aosta Valley.

Overview

Sarre is a municipality in the province of Valle d'Aosta/Vallée d'Aoste, in Valle d'Aosta/Vallée d'Aoste. At the end of 2023 it had 4,787 residents, the second most populous in the province.

Earthquakes

For Italy's Civil Protection Department, Sarre is in seismic zone 3, a zone where strong earthquakes are possible but rare. All 74 municipalities in the province are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.100 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 1.4%. The estimated average age is 46 years, in line with the province. 23% of residents are over 65 (the regional figure is 25%). Foreign residents make up 4.6% of the population. On average, a household has 2.1 members.

Income and climate

In tax year 2024, taxpayers in Sarre declared an average taxable income of 26,718 euros, in line with the province (26,152 euros). The Italian average is 24,895 euros.

Sarre is in climate zone E, with 2,935 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 639 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Sarre has 4 schools and 1 pharmacy. The Overture Maps data also lists 3 grocery shops and supermarkets, 1 healthcare facility and 2 sports facilities.

There are 0.2 healthcare facilities per 1,000 residents, fewer than the province average (0.5).

Public transport

We do not yet have open public transport timetables for this municipality: the report says so explicitly, without inventing distances.

How built-up it is

Buildings, roads, car parks and other sealed surfaces cover 5.3% of the land in Sarre, compared with 2.2% in the province and 2.2% in the region. In 2024 built-up land grew by 0.9 hectares.

Radon and contaminated sites

Sarre is not among the radon priority areas designated by the Regione Valle d'Aosta in 2026. 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 Sarre.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Sarre: 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 Sarre 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 43 inhabited census areas in Sarre. Half of the residents live in areas scoring 64 or more.

Residents by band

  • fair 51.0%
  • good 49.0%

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 007066. The text on this page is generated automatically from the data.