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Nemi: 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 Nemi

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 Nemorense 3, Nemi.

Nemi, a village on the crater rim in the Castelli Romani

Nemi is one of the smallest and most recognisable of the Castelli Romani, the hill towns south-east of Rome: the old centre sits on the rim of the crater holding Lake Nemi, at about 520 metres, with houses facing out over the drop and woods running down to the water. It is known for its strawberries and for the museum recalling the great Roman ships recovered from the lake.

Rome is about thirty kilometres away and many residents work there, but commuting means driving or using local transport on roads that are often busy. The market has two sides: flats in the old village, with steps and alleys, little room for a car and much sought-after views; detached houses and homes with gardens in the green areas around the town. Declared incomes are below the average for the province of Rome.

There are 1,870 residents in 2023, down 2.9% since 2011. The average age is 47.0, slightly above 46.0 in the province, over-65s are 24.5% and foreign residents 8.4%. Because of the altitude the climate is cooler than in Rome: zone E.

The Alban Hills are a volcanic area with frequent earthquakes, usually of low intensity. Nemi is in seismic zone 2 on the Civil Protection scale, with an expected acceleration of 0.166 g. For a house in the old village, ask about strengthening work, the state of vaults and floors and whether any added storeys were authorised.

The crater walls are steep, so for houses on the rim or along the roads down to the lake, read the official landslide maps for the address. The report does this starting from the Revenue Agency (Agenzia delle Entrate) cadastral maps.

Key points

  • Castelli Romani village on the rim of the Lake Nemi crater.
  • Flats in the old village, detached homes in the green: two markets.
  • Seismic zone 2, expected acceleration 0.166 g.
  • Steep crater slopes: read the landslide maps for the address.

Overview

Nemi is a municipality in the province of Roma, in Lazio. At the end of 2023 it had 1,870 residents, ranked 80 of 121 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Nemi 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 0.166 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.

For anyone buying in Nemi, 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 2.9%. 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 8.4% of the population. On average, a household has 2.3 members.

Income and climate

In tax year 2024, taxpayers in Nemi declared an average taxable income of 26,389 euros, below the provincial average (28,682 euros). The Italian average is 24,895 euros.

Nemi is in climate zone E, with 2,161 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 521 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Nemi has 4 schools and 1 pharmacy. The Overture Maps data also lists 2 grocery shops and supermarkets, 1 sports facility and 2 parks and green areas.

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 8.6% of the land in Nemi, 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 no contaminated sites in Nemi.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Nemi: 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 Nemi 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 16 inhabited census areas in Nemi. Half of the residents live in areas scoring 64 or more.

Residents by band

  • fair 63.2%
  • good 36.8%

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 058070. The text on this page is generated automatically from the data.