San Lorenzo Isontino: what to know before buying a home
A municipality in the province of Gorizia, Friuli-Venezia Giulia. Official data on earthquakes, population, services and transport.
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Search for an address in San Lorenzo Isontino
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 Udine 1, San Lorenzo Isontino.
San Lorenzo Isontino, on the plain between Gorizia and Cormons
San Lorenzo Isontino is a small municipality on the Isonzo plain, between Gorizia and Cormons, in countryside of vineyards and fields close to the Collio hills. The village is compact, with a centre of masonry houses and courtyards and a few newer residential areas. Gorizia, a few kilometres away, is the base for hospital care, offices and schools, and across the border lies Nova Gorica, in Slovenia.
There is one feature buyers need to know about. Like much of the former Austrian territory, this area uses the land book system (catasto tavolare): ownership is checked at the Land Registry Office (Ufficio tavolare) rather than the usual property registry. Unlike Trentino, however, the Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps, so the report can trace the plot from the address.
According to Istat, the national statistics office, there were 1,485 residents in 2023, down 4.1% on 2011. The average age is 49.5, against 48.0 for the province; over-65s make up 28.4% and foreign residents 4.2%. Declared incomes are above the average for the province of Gorizia.
San Lorenzo is in seismic zone 2, with an expected ground acceleration of 0.186 g; in the province, 10 municipalities are in zone 2 and 15 in zone 3. For a house built before the latest earthquake codes, ask for the design and any strengthening work.
On the plain, the thing to check is the relationship with watercourses: the report looks at the official flood maps for the address.
Key points
- Isonzo plain between Gorizia and Cormons, near the Collio.
- Land book system, but Revenue Agency maps are available.
- Population down 4.1% since 2011.
- Seismic zone 2, expected acceleration 0.186 g.
Overview
San Lorenzo Isontino is a municipality in the province of Gorizia, in Friuli-Venezia Giulia. At the end of 2023 it had 1,485 residents, ranked 19 of 25 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, San Lorenzo Isontino is in seismic zone 2, a zone where strong earthquakes are possible. Only 10 of 25 municipalities in the province are in zone 2.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.186 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in San Lorenzo Isontino, the building matters a great deal: ask for the design year, whether it met the 2008 seismic standards, and whether any seismic retrofit has been carried out.
Population
Compared with the 2011 census, the resident population has fallen by 4.1%. The estimated average age is 50 years, higher than the province average (48). 28% of residents are over 65 (the regional figure is 27%). Foreign residents make up 4.2% of the population. On average, a household has 2.1 members.
Income and climate
In tax year 2024, taxpayers in San Lorenzo Isontino declared an average taxable income of 26,079 euros, above the provincial average (24,418 euros). The Italian average is 24,895 euros.
San Lorenzo Isontino is in climate zone E, with 2,279 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 54 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, San Lorenzo Isontino has 2 schools and 1 pharmacy. The Overture Maps data also lists 2 grocery shops and supermarkets, 1 healthcare facility and 1 sports facility.
There are 1.3 grocery shops and supermarkets per 1,000 residents, more 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 14.8% of the land in San Lorenzo Isontino, compared with 13.0% in the province and 8.1% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
San Lorenzo Isontino is not among the radon priority areas designated by the Regione Friuli Venezia Giulia in 2024. 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 Lorenzo Isontino; one has been cleaned up or closed.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within San Lorenzo Isontino: 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 Lorenzo Isontino 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 10 inhabited census areas in San Lorenzo Isontino. Half of the residents live in areas scoring 71 or more.
Residents by band
- fair 2.2%
- good 97.8%
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), 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 031020. The text on this page is generated automatically from the data.