Skip to content
Vicinalia
Italiano Sign up

San Gregorio da Sassola: what to know before buying a home

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

Liveability index free for any address

Search for an address in San Gregorio da Sassola

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 Roma 2, San Gregorio da Sassola.

San Gregorio da Sassola, a castle in the hills beyond Tivoli

San Gregorio da Sassola is a hill village in the province of Rome, south east of Tivoli, in the hills rising towards the Monti Prenestini. The historic centre clusters around Castello Brancaccio, which dominates the village, and around it lie olive groves, woods and scattered houses. Tivoli is the reference town for services and schools, while Rome remains where many people work.

If you plan to commute to the capital, the journey is the thing to test. The village can only be reached by road, and travel times depend heavily on traffic coming into Rome, so try it at rush hour before deciding. The report measures the distance from the house to the pharmacy, school and shops.

There were 1,422 residents in 2023, down 8.4% on the 1,553 of 2011. The average age is 48.2, against 46.0 in the province, and over-65s make up 27.6% against 22.9%. Foreign residents account for 5.4%. Declared incomes are below the average for the province of Rome.

In the province of Rome, 97 municipalities are in seismic zone 2 on the Civil Protection scale and 24 in zone 3. San Gregorio is in zone 2, with expected ground acceleration of 0.155 g. In the old centre, where houses are often masonry and on several floors, ask about work on floors and roof and any seismic improvements.

The report checks the official landslide maps for the address, which matter on the slopes, and finds the land parcel on the Revenue Agency (Agenzia delle Entrate) cadastral maps.

Key points

  • Hills south east of Tivoli, with Castello Brancaccio.
  • Commuting to Rome by road only.
  • Seismic zone 2, expected acceleration 0.155 g.
  • Residents down 8.4% since 2011.

Overview

San Gregorio da Sassola is a municipality in the province of Roma, in Lazio. At the end of 2023 it had 1,422 residents, ranked 82 of 121 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, San Gregorio da Sassola 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 (97 of 121) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.155 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.

For anyone buying in San Gregorio da Sassola, 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 8.4%. The estimated average age is 48 years, higher than the province average (46). 28% of residents are over 65 (the regional figure is 23%). Foreign residents make up 5.4% of the population. On average, a household has 2.1 members.

Income and climate

In tax year 2024, taxpayers in San Gregorio da Sassola declared an average taxable income of 21,165 euros, below the provincial average (28,682 euros). The Italian average is 24,895 euros.

San Gregorio da Sassola is in climate zone D, with 2,091 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 420 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, San Gregorio da Sassola has 3 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop.

The data shows no healthcare facilities within the municipality, against a provincial average of 0.8 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 2.7% of the land in San Gregorio da Sassola, compared with 13.2% in the province and 8.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Official databases list no contaminated sites in San Gregorio da Sassola.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within San Gregorio da Sassola: 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 Gregorio da Sassola 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 8 inhabited census areas in San Gregorio da Sassola. Half of the residents live in areas scoring 57 or more.

Residents by band

  • fair 100.0%

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

ISTAT code 058095. The text on this page is generated automatically from the data.