San Lorenzo Nuovo: what to know before buying a home
A municipality in the province of Viterbo, Lazio. Official data on earthquakes, population, services and transport.
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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 Umberto I 1, San Lorenzo Nuovo.
San Lorenzo Nuovo, the octagonal square above Lake Bolsena
The name already says something about its history: San Lorenzo Nuovo (literally "new") was rebuilt in the eighteenth century higher up than the old village, on a regular plan around an octagonal square. It sits on the high ground north of Lake Bolsena, in upper Tuscia, in the province of Viterbo, along the Via Cassia towards Acquapendente and Tuscany. The lake is in view from the village, and the shore is a few minutes' drive away.
Buyers will find houses in the centre, with façades lined up along the straight eighteenth-century streets, newer homes on the edges and farmhouses in the countryside among fields, olive groves and woods. The lake brings some demand for second homes and summer visitors, but the village remains agricultural. Viterbo is the reference for offices, hospital and university, a distance to cover by car.
Istat, Italy's statistics office, counts 2,017 residents in 2023, down 6.9% since 2011. The average age is 49.5, above the provincial 47.5, and 29.9% are over 65 against 25.9% in the province. Foreign residents make up 12.7%. Declared incomes are below the Viterbo average.
The ground here is volcanic in origin. On earthquakes, the municipality is in seismic zone 2, with an expected ground acceleration of 0.142 g in the built-up area. In tuff and stone houses, have an engineer check the load-bearing walls, floors and ties, and ask whether any documented work has been done. On the slopes towards the lake, the report reads the official landslide maps for the address.
Revenue Agency cadastral maps are published, so the report can trace the address back to its plot.
Key points
- Eighteenth-century village with an octagonal square above Lake Bolsena.
- On the Via Cassia, towards Acquapendente.
- Average age 49.5, 29.9% over 65.
- Seismic zone 2, expected acceleration 0.142 g.
Overview
San Lorenzo Nuovo is a municipality in the province of Viterbo, in Lazio. At the end of 2023 it had 2,017 residents, ranked 39 of 60 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, San Lorenzo Nuovo is in seismic zone 2, a zone where strong earthquakes are possible. The region uses a finer breakdown: here the classification is 2B. Most municipalities in the province (40 of 60) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.142 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in San Lorenzo Nuovo, 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 6.9%. The estimated average age is 49 years, higher than the province average (48). 30% of residents are over 65 (the regional figure is 23%). Foreign residents make up 12.7% of the population. On average, a household has 2.0 members.
Income and climate
In tax year 2024, taxpayers in San Lorenzo Nuovo declared an average taxable income of 19,421 euros, below the provincial average (22,031 euros). The Italian average is 24,895 euros.
San Lorenzo Nuovo is in climate zone E, with 2,313 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 503 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, San Lorenzo Nuovo has 3 schools and 1 pharmacy. The Overture Maps data also lists 3 grocery shops and supermarkets.
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 5.2% of the land in San Lorenzo Nuovo, compared with 4.7% in the province and 8.2% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
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 one contaminated site, or site still under investigation, in San Lorenzo Nuovo. The report tells you whether one is close to the address.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within San Lorenzo Nuovo: 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 San Lorenzo Nuovo 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 15 inhabited census areas in San Lorenzo Nuovo. Half of the residents live in areas scoring 71 or more.
Residents by band
- fair 5.9%
- good 94.1%
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.
- 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 056047. The text on this page is generated automatically from the data.