Frassilongo: what to know before buying a home
A municipality in the province of Trento, Trentino-Alto Adige/Südtirol. Official data on earthquakes, population, services and transport.
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Search for an address in Frassilongo
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: Maso Villata 77, Frassilongo.
Frassilongo, in the Mocheni valley above Pergine
The Mocheni valley opens above Pergine Valsugana, and Frassilongo covers one of its slopes, with farmsteads and small clusters scattered among meadows and woods above eight hundred metres. The valley has its own language and culture: it is home to the Mocheni, a minority of Germanic origin protected by the Autonomous Province of Trento. Pergine and Trento are where people go for work, secondary schools and services, within daily driving distance.
Buyers need to allow for the mountain climate. The climate zone is F and snow is normal, so judge a house on its sun exposure, insulation, heating and winter access. On slopes and near streams the report checks the official landslide and flood maps at the exact address.
There is another important difference from most of Italy. Trentino uses the land register system known as the catasto tavolare: ownership is proved by entry in the land book (libro fondiario), and the Revenue Agency (Agenzia delle Entrate) does not publish cadastral maps for these municipalities. The report flags this in its cadastre section, and for details of the plot you should go to the local land book office.
The village has grown: in 2023 it had 352 residents, up 9.7% on the 321 of 2011, according to Istat, the national statistics office. The estimated average age is 48.1, against 45.4 in the province of Trento, and over-65s make up 27.3%.
The municipality is in seismic zone 3 on the Civil Protection scale, like 147 of the 166 municipalities in the province, with expected ground acceleration of about 0.076 g in the built-up area, a low value. In an old farmstead the roof and timber structure matter more than earthquakes.
Key points
- Mocheni valley above Pergine, home to the Mocheni minority.
- Land book system: no Revenue Agency cadastral maps.
- 352 residents, up 9.7% since 2011.
- Seismic zone 3, expected acceleration about 0.076 g.
Overview
Frassilongo is a municipality in the province of Trento, in Trentino-Alto Adige/Südtirol. At the end of 2023 it had 352 residents, among the smallest in the province (156 of 166).
Earthquakes
For Italy's Civil Protection Department, Frassilongo is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (147 of 166) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.076 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 grown by 9.7%. The estimated average age is 48 years, higher than the province average (45). 27% of residents are over 65 (the regional figure is 22%). Foreign residents make up 0.6% of the population. On average, a household has 2.1 members.
Income and climate
In tax year 2024, taxpayers in Frassilongo declared an average taxable income of 22,066 euros, below the provincial average (25,718 euros). The Italian average is 24,895 euros.
Frassilongo is in climate zone F, with 3,720 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 852 metres above sea level.
Services
The data shows no schools within the municipality, against a provincial average of 0.7 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 1.4% of the land in Frassilongo, compared with 3.1% in the province and 2.9% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Frassilongo is not among the radon priority areas designated by the Provincia autonoma di Trento in 2026. 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 Frassilongo.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Frassilongo: 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
For Frassilongo the Revenue Agency does not publish cadastral maps: the land registry here uses the tavolare (land book) system. The report cannot give a parcel reference, but it still checks risks, services and transport at the address and states this clearly.
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 16 inhabited census areas in Frassilongo. Half of the residents live in areas scoring 57 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
- Seismic classification of municipalities, Dipartimento della Protezione Civile. Licence CC BY 4.0, updated to 2025-05.
- MPS04 seismic hazard model, INGV. Licence CC BY 4.0, 2004 model.
- Data by census section, Istat. Licence CC BY 4.0, residents at the end of 2023, compared with the 2011 census.
- Places, Overture Maps Foundation. Licence CDLA Permissive 2.0 and others depending on provider, release 2026-10-21.0.
- Income and main IRPEF variables by municipality, MEF, Dipartimento delle Finanze. Licence CC BY 3.0 IT, tax year 2024.
- Climate zones and heating degree days of municipalities (Presidential Decree 412/1993, Annex A), Normattiva. Licence CC BY 4.0, current text.
- Land take, territorial dynamics and ecosystem services, ISPRA e SNPA. Licence CC BY 4.0, 2024 data.
- Predictive radon map by municipality, ISPRA. Licence CC BY 4.0, version 2022-11.
- Radon priority areas (Legislative Decree 101/2020), Provincia autonoma di Trento, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2026.
- Contaminated sites, ISPRA, MOSAICO - Banca dati nazionale dei siti oggetto di procedimento di bonifica. Licence CC BY 4.0, updated to 12 November 2026.
- Liveability index by census area, Vicinalia, from the data in the report sections. Licence CC BY-SA 4.0, worked out on 30 September 2026.
- List of Italian municipalities, Istat. Licence CC BY 4.0, updated to 21 February 2026.
ISTAT code 022090. The text on this page is generated automatically from the data.