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Genazzano: 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 Genazzano

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 Valmontone 1, Genazzano.

Genazzano, the Colonna castle and the Buon Consiglio sanctuary

The tufa spur on which Genazzano is built, among the valleys of the Monti Prenestini east of Rome, is crowned by the Colonna family's castle. The town is known for the sanctuary of the Madonna del Buon Consiglio, a pilgrimage site, and for its flower carpet festival, the infiorata; in the valley below the centre are the ruins of a nymphaeum attributed to Bramante.

In the old town the houses are old, in stone and tufa, on narrow lanes and stepped streets, often without parking close by. Newer building sits on the edge of the centre and out in the countryside, among olive groves and vines. Rome is around fifty kilometres away: for the A1 motorway you head down into the Sacco valley, and public transport relies mainly on Cotral, the regional bus company. If you work in the city, expect a long day.

In 2023 there were 5,711 residents, down 4.2% since 2011, according to Istat, the national statistics office. The mean age is 46.9, a little above the metropolitan area's 46.0, and over-65s make up 23.9%. Foreign residents account for 8.2%. Declared incomes are well below the provincial average, which the capital pushes up, and house prices are also a long way from those in Rome.

Genazzano is in seismic zone 2, as are 97 of the 121 municipalities in the metropolitan area of Rome; the other 24 are in zone 3. Expected ground acceleration in the built-up area is about 0.157 g. In the masonry buildings of the old town, the work already done on walls, vaults and roofs is what counts, and asking for the paperwork before making an offer avoids surprises.

Along the edges of the tufa spur and on the slopes, rockfalls and landslides need checking plot by plot. The report does this from the address, using the Revenue Agency's (Agenzia delle Entrate) cadastral maps, and also gives the local price band. The town hall stands just under 400 metres up, in climate zone D.

Key points

  • Old town on a tufa spur in the Monti Prenestini, east of Rome.
  • 5,711 residents, down 4.2% since 2011.
  • Seismic zone 2, expected acceleration about 0.157 g.
  • Rockfalls and landslides at the tufa edges: check each address.

Overview

Genazzano is a municipality in the province of Roma, in Lazio. At the end of 2023 it had 5,711 residents, ranked 59 of 121 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Genazzano 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 0.157 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.

For anyone buying in Genazzano, 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 4.2%. The estimated average age is 47 years, in line with the province. 24% of residents are over 65 (the regional figure is 23%). Foreign residents make up 8.2% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Genazzano declared an average taxable income of 21,810 euros, below the provincial average (28,682 euros). The Italian average is 24,895 euros.

Genazzano is in climate zone D, with 1,886 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 375 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Genazzano has 5 schools and 2 pharmacies. The Overture Maps data also lists 7 grocery shops and supermarkets, 2 healthcare facilities, 6 sports facilities and 3 parks and green areas.

There are 1.2 grocery shops and supermarkets per 1,000 residents, more than the province average (0.4).

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 6.3% of the land in Genazzano, 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

According to the ISPRA map, the estimated radon emission in the municipality is medium. 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 Genazzano. 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 Genazzano: 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 Genazzano 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 29 inhabited census areas in Genazzano. Half of the residents live in areas scoring 65 or more.

Residents by band

  • modest 1.1%
  • fair 34.9%
  • good 64.0%

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 058042. The text on this page is generated automatically from the data.