Sermoneta: what to know before buying a home
A municipality in the province of Latina, Lazio. Official data on earthquakes, population, services and transport.
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Search for an address in Sermoneta
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 dell'Irto 1, Sermoneta.
Sermoneta, the Caetani hill village and the plain below
Sermoneta has two sides worth keeping apart. Up on the slopes of the Lepini mountains stands the medieval village gathered around the Caetani castle, with steep lanes and stone houses at roughly two hundred and fifty metres. Below lies the Pontine plain, drained and reclaimed in the twentieth century, where districts such as Pontenuovo and Monticchio have grown. The Cistercian abbey of Valvisciolo is also within the municipality.
Most of the newer housing is on the plain, close to Latina and to the roads towards Rome, and that is where families who work in the city tend to settle. The old village is a different choice: historic houses, often on several levels, reached on foot, with parking some way off. If you buy up there, budget for work on roofs, walls and services, and check the restrictions on alterations in the historic centre.
The population is young for the Lazio region. There were 9,994 residents in 2023, up 9.5% since 2011; the estimated average age is 43.0 against 45.5 for the province, and over-65s account for 18.7%, well below the provincial 22.8%. Households average 2.48 people and declared incomes are above the average for the province of Latina. Foreign residents make up 5.6%.
Sermoneta is in seismic zone 3, along with 29 other municipalities in the province, while 3 are in zone 2. The expected ground acceleration in the built-up area is about 0.086 g. For a masonry building in the old village, ask before buying whether it has been structurally strengthened and under which permits.
On the plain the issue is water: the reclamation canals control drainage and the ground stays low in places. The report checks the flood maps and, on the slopes below the village, the landslide maps, always at the exact address, and finds the plot using the Revenue Agency (Agenzia delle Entrate) cadastral maps.
Key points
- Medieval village on the Lepini hills, newer districts on the plain towards Latina.
- Population up 9.5% since 2011, average age 43.0.
- Over-65s at 18.7%, against 22.8% in the province.
- Seismic zone 3, expected acceleration about 0.086 g.
Overview
Sermoneta is a municipality in the province of Latina, in Lazio. At the end of 2023 it had 9,994 residents, ranked 16 of 33 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Sermoneta is in seismic zone 3, a zone where strong earthquakes are possible but rare. The region uses a finer breakdown: here the classification is 3A. Most municipalities in the province (30 of 33) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.086 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 9.5%. The estimated average age is 43 years, lower than the province average (46). 19% of residents are over 65 (the regional figure is 23%). Foreign residents make up 5.6% of the population. On average, a household has 2.5 members.
Income and climate
In tax year 2024, taxpayers in Sermoneta declared an average taxable income of 23,561 euros, above the provincial average (21,502 euros). The Italian average is 24,895 euros.
Sermoneta is in climate zone D, with 1,547 heating degree days: heating may be switched on from 1 November to 15 April, for up to 12 hours a day. The same table puts the town hall at 257 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Sermoneta has 9 schools and 2 pharmacies. The Overture Maps data also lists 4 grocery shops and supermarkets, 2 healthcare facilities, 2 sports facilities and 1 green area.
There are 0.2 healthcare facilities per 1,000 residents, fewer than the province average (0.6).
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 10.8% of the land in Sermoneta, compared with 10.1% in the province and 8.2% in the region. In 2024 built-up land grew by 0.9 hectares.
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 2 contaminated sites, or sites still under investigation, in Sermoneta. 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 Sermoneta: 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 Sermoneta 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 84 inhabited census areas in Sermoneta. Half of the residents live in areas scoring 70 or more.
Residents by band
- fair 15.5%
- good 82.1%
- very good 2.3%
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 059027. The text on this page is generated automatically from the data.