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Trecastelli: what to know before buying a home

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

Liveability index free for any address

Search for an address in Trecastelli

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 Antonelli 1, Trecastelli.

Trecastelli, three hill villages behind Senigallia

Trecastelli, meaning three castles, is a young municipality: it was created in 2014 by merging Castel Colonna, Monterado and Ripe, three villages in the hills inland from Senigallia on the Adriatic coast of the Marche. Each has kept its own centre on the hill, with farmland, old farmhouses and roads running down to the valleys in between.

The sea is close, and that shapes the market. Senigallia and the coast are a few minutes' drive away, and buyers here often want a house with more space and a lower price than on the coast, or a farmhouse to restore. Services are spread across the three villages, and for the hospital and public offices people go to Senigallia.

There were 7,586 residents at the end of 2023, according to Istat, the national statistics office, almost the same as in 2011 (+0.1%). The average age of 45.5 is lower than in the province of Ancona (47.2), over-65s make up 22.8% and foreign residents 10.8%. Declared incomes are below the provincial average.

All 47 municipalities in the province of Ancona are in seismic zone 2 of the Civil Protection Department's classification, and here the expected ground acceleration in the built-up area is about 0.185 g. The earthquake of 1930 hit Senigallia and its hinterland hard, and brick and stone farmhouses in the hills are the most fragile buildings: before buying, ask for a structural survey and find out whether any strengthening work has been done.

Landslides are common on the clay hills of the inland Marche, and on the valley floors flood hazard matters: the report checks both for the exact address. The Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps, and the report goes from the address to the plot.

Key points

  • Created in 2014 from Castel Colonna, Monterado and Ripe.
  • 7,586 residents, average age 45.5, below the province.
  • Seismic zone 2, like every municipality in the province of Ancona.
  • Clay hills: landslides to check address by address.

Overview

Trecastelli is a municipality in the province of Ancona, in Marche. At the end of 2023 it had 7,586 residents, ranked 12 of 47 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Trecastelli is in seismic zone 2, a zone where strong earthquakes are possible. All 47 municipalities in the province are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.185 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.

For anyone buying in Trecastelli, 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 number of residents is nearly unchanged. The estimated average age is 46 years, lower than the province average (47). 23% of residents are over 65 (the regional figure is 26%). Foreign residents make up 10.8% of the population. On average, a household has 2.4 members.

Income and climate

In tax year 2024, taxpayers in Trecastelli declared an average taxable income of 21,009 euros, below the provincial average (24,794 euros). The Italian average is 24,895 euros.

Trecastelli is in climate zone D, with 1,897 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 161 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Trecastelli has 8 schools and 3 pharmacies. The Overture Maps data also lists 2 grocery shops and supermarkets, 2 healthcare facilities and 1 green area.

There are 0.3 healthcare facilities per 1,000 residents, fewer than the province average (0.7).

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 10.6% of the land in Trecastelli, compared with 9.1% in the province and 7.0% in the region. In 2024 built-up land grew by 1.6 hectares.

Radon and contaminated sites

Official databases list one contaminated site, or site still under investigation, in Trecastelli, and one more has 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 Trecastelli: 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 Trecastelli 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 49 inhabited census areas in Trecastelli. Half of the residents live in areas scoring 59 or more.

Residents by band

  • modest 1.1%
  • fair 83.9%
  • good 15.0%

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 042050. The text on this page is generated automatically from the data.