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Gaby: 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 Gaby

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: Localita' Kiamourseyra 1, Gaby.

Gaby, in the Lys valley below Gressoney

Gaby is the village in the Lys valley you reach driving up from Pont-Saint-Martin towards Gressoney, after Issime. The centre is at about a thousand metres on the valley floor, with hamlets scattered among meadows and woods on both slopes. Unlike neighbouring Issime and Gressoney, which have Walser roots, the local language here is Franco-Provençal patois, as in most of the Aosta Valley.

The market is made up of stone and timber houses, mountain huts, flats in small blocks and second homes for people who come for the mountains in summer and for skiing at Gressoney in winter. For work, secondary schools and services people go down to Pont-Saint-Martin, which has the A5 motorway and the railway. In climate zone F winters are long and snowy: insulation, heating, the roof and winter access to the house come first.

In 2023 there were 418 residents, 14.2% fewer than the 487 of 2011. The estimated average age is 48.7 (regional figure 47.0), over-65s make up 28.2% and foreign residents 4.1%. Declared incomes are in line with the regional average.

All 74 municipalities in the Aosta Valley are in seismic zone 3 of the national classification kept by the Civil Protection Department, and in Gaby the expected ground acceleration in the built-up area is about 0.054 g. In an Alpine valley, avalanches, landslides and floods on the Lys and side streams matter more: for each address the report checks them on the official maps.

The Revenue Agency (Agenzia delle Entrate) cadastral maps are published in the Aosta Valley too, and the report traces the address back to its land parcel. For mountain huts and farm buildings, check that the current state matches what the land registry shows.

Key points

  • Lys valley between Issime and Gressoney, about a thousand metres up.
  • Franco-Provençal patois, unlike the nearby Walser villages.
  • All 74 Aosta Valley municipalities in seismic zone 3.
  • 418 residents in 2023, down 14.2% since 2011.

Overview

Gaby 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 418 residents, ranked 52 of 74 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Gaby 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 0.054 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 14.2%. The estimated average age is 49 years, higher than the province average (47). 28% of residents are over 65 (the regional figure is 25%). Foreign residents make up 4.1% of the population. On average, a household has 1.8 members.

Income and climate

In tax year 2024, taxpayers in Gaby declared an average taxable income of 25,887 euros, in line with the province (26,152 euros). The Italian average is 24,895 euros.

Gaby is in climate zone F, with 3,803 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 1,047 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Gaby has 1 school and 1 pharmacy. The Overture Maps data also lists 1 grocery shop.

The data shows no healthcare facilities within the municipality, against a provincial average of 0.5 per 1,000 residents.

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 1.1% of the land in Gaby, compared with 2.2% in the province and 2.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Gaby is not among the radon priority areas designated by the Regione Valle d'Aosta in 2026. According to the ISPRA map, the estimated radon emission in the municipality is high. 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 Gaby; one has been cleaned up or closed.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Gaby: 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 Gaby 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 14 inhabited census areas in Gaby. Half of the residents live in areas scoring 69 or more.

Residents by band

  • fair 29.5%
  • good 70.5%

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 007029. The text on this page is generated automatically from the data.