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Sezze: what to know before buying a home

A municipality in the province of Latina, Lazio. Official data on earthquakes, population, services and transport.

Liveability index free for any address

Search for an address in Sezze

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 Bassiano 1, Sezze.

Sezze, the hill town on the Lepini and the Scalo on the plain

Sezze is built on two levels. The old town sits on a hill of the Lepini mountains, around three hundred metres up, looking over the Pontine plain, and keeps stretches of the ancient polygonal walls of Setia. Below, along the railway, Sezze Scalo has grown up, surrounded by reclaimed farmland with greenhouses, market gardens and farms.

For anyone working in Latina or Rome, the main link is Sezze Romano station on the Rome to Naples line via Formia. Latina is also close by car and is where people go for hospital care, as there are only 3 healthcare sites in the municipality. Choosing the old town means accepting steep streets, narrow lanes and old houses that often need renovating; at the Scalo and on the plain there are newer small villas and apartment blocks.

At the end of 2023 there were 23,753 residents, down 1.5% on 2011, according to Istat, the national statistics office. The estimated average age is 44.9, a little below the province of Latina, and foreign nationals make up 15.9%, a high share. Declared incomes are below the provincial average.

Sezze is in seismic zone 3, like 29 other municipalities in the province, with expected ground acceleration of about 0.081 g, a moderate value. In the old town the stone houses lean against one another, and work done next door can affect the whole block, so ask about the history of work on the building and on its neighbours.

On the plain, water is the issue. The land was reclaimed from marsh, and near the canals flood hazard needs reading for the exact address; on the hillside, landslide hazard counts instead. The report checks both and finds the land parcel on the cadastral maps of the Revenue Agency (Agenzia delle Entrate).

Key points

  • Old town on the Lepini hills, Sezze Scalo and farmland below.
  • Sezze Romano station on the Rome to Naples line via Formia.
  • 23,753 residents, foreign nationals at 15.9%.
  • Seismic zone 3, expected acceleration about 0.081 g.

Overview

Sezze is a municipality in the province of Latina, in Lazio. At the end of 2023 it had 23,753 residents, ranked 7 of 33 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Sezze is in seismic zone 3, a zone where strong earthquakes are possible but rare. The region uses a finer breakdown: here the classification is 3B. 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 0.081 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 1.5%. The estimated average age is 45 years, in line with the province. 21% of residents are over 65 (the regional figure is 23%). Foreign residents make up 15.9% of the population. On average, a household has 2.3 members.

Income and climate

In tax year 2024, taxpayers in Sezze declared an average taxable income of 18,900 euros, below the provincial average (21,502 euros). The Italian average is 24,895 euros.

Sezze is in climate zone D, with 1,661 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 319 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Sezze has 20 schools and 6 pharmacies. The Overture Maps data also lists 13 grocery shops and supermarkets, 3 healthcare facilities, 12 sports facilities and 2 parks and green areas.

There are 0.1 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 9.3% of the land in Sezze, compared with 10.1% in the province and 8.2% in the region. In 2024 built-up land grew by 1.8 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 one contaminated site, or site still under investigation, in Sezze, and 2 more have been cleaned up or closed. 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 Sezze: 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 Sezze 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 216 inhabited census areas in Sezze. Half of the residents live in areas scoring 70 or more.

Residents by band

  • modest 0.1%
  • fair 23.1%
  • good 50.9%
  • very good 24.8%
  • excellent 1.1%

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

ISTAT code 059028. The text on this page is generated automatically from the data.