San Dorligo della Valle: what to know before buying a home
A municipality in the province of Trieste, Friuli-Venezia Giulia. Official data on earthquakes, population, services and transport.
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Search for an address in San Dorligo della Valle
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' Dolina 1, San Dorligo della Valle.
San Dorligo della Valle - Dolina, the Karst and Val Rosandra
San Dorligo della Valle, Dolina in Slovene, takes up the south-eastern corner of the province of Trieste, between the city, Muggia and the border with Slovenia. It is officially bilingual: a large part of the population speaks Slovene, and village names are written in both languages. The land climbs from the valley floor to the Karst plateau and includes Val Rosandra, a limestone gorge protected as a nature reserve and popular with walkers and climbers.
The municipality has very different areas. Down towards Trieste and the bay of Muggia there are industrial zones, storage depots and busy roads; higher up are the Karst villages, with stone houses, vegetable plots and woods. Buyers should look carefully at what surrounds an address, and bear in mind the bora, the cold wind that blows hard in winter: roofs, windows and the way a house faces matter more here than elsewhere.
At the end of 2023 there were 5,678 residents, down 4.0% since 2011, according to Istat, the national statistics office. Like the rest of the province of Trieste, the population is old: an estimated average age of 49.5, with over-65s at 28.9%. Foreign nationals make up 3.7%, fewer than in the city, and declared incomes are below the provincial average.
All 6 municipalities in the province are in seismic zone 3 of the Civil Protection Department's classification, and the expected acceleration in the built-up area here is about 0.117 g. In old Karst stone houses, have the walls and roof checked before planning a renovation.
One practical point concerns ownership. The land register system inherited from Austria still applies here: rights over property are recorded in the land book (libro fondiario) kept by the land registry office, not in the property registers used in the rest of Italy. The Revenue Agency (Agenzia delle Entrate) still publishes cadastral maps, so the report finds the parcel from the address; for the ownership position, the notary consults the land book.
Key points
- Bilingual Italian and Slovene municipality, between Trieste and the border.
- Austrian-style land book system for recording ownership.
- Population down 4.0% since 2011.
- Seismic zone 3 like the whole province, acceleration about 0.117 g.
Overview
San Dorligo della Valle is a municipality in the province of Trieste, in Friuli-Venezia Giulia. At the end of 2023 it had 5,678 residents, ranked 4 of 6 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, San Dorligo della Valle is in seismic zone 3, a zone where strong earthquakes are possible but rare. All 6 municipalities in the province are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.117 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 4.0%. The estimated average age is 49 years, in line with the province. 29% of residents are over 65 (the regional figure is 27%). Foreign residents make up 3.7% of the population. On average, a household has 2.2 members.
Income and climate
In tax year 2024, taxpayers in San Dorligo della Valle declared an average taxable income of 25,545 euros, below the provincial average (27,409 euros). The Italian average is 24,895 euros.
Services
In the official Ministry of Education and Ministry of Health lists, San Dorligo della Valle has 14 schools and 1 pharmacy. The Overture Maps data also lists 4 grocery shops and supermarkets, 6 sports facilities and 2 parks and green areas.
The data shows no healthcare facilities 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 15.9% of the land in San Dorligo della Valle, compared with 20.8% in the province and 8.1% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
San Dorligo della Valle is not among the radon priority areas designated by the Regione Friuli Venezia Giulia in 2024. 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 open contaminated sites in San Dorligo della Valle; 2 have been cleaned up or closed.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within San Dorligo della Valle: 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
San Dorligo della Valle uses the tavolare (land book) system, but the Revenue Agency still publishes the maps: the report finds the building's parcel, that is its sheet and parcel number, starting from the address.
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 47 inhabited census areas in San Dorligo della Valle. Half of the residents live in areas scoring 70 or more.
Residents by band
- fair 17.0%
- good 83.0%
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.
- 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), Regione Friuli Venezia Giulia, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2024.
- 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 032004. The text on this page is generated automatically from the data.