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Chianciano Terme: what to know before buying a home

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

Liveability index free for any address

Search for an address in Chianciano Terme

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: Viale della Liberta' 1, Chianciano Terme.

Chianciano Terme, the old hilltop village and the spa town

Chianciano Terme has two very different sides. Up on the hill is Chianciano Vecchia, the medieval stone village; lower down stretches the spa town, built mostly in the twentieth century around the thermal baths, with avenues, parks and an unusually large number of hotels for a place this size. It sits in the Sienese part of the Valdichiana, between Montepulciano and Chiusi, with the Val d'Orcia a little further west.

For buyers the difference between the two parts matters. In the old village you find historic houses, often on several floors and with little room for a car. In the spa district many buildings were designed for visitors: former guesthouses, hotels that have closed or been converted, and flats in blocks from the 1960s and 1970s. Spa tourism is well below its old levels and there is plenty of property on the market. For trains and the A1 motorway the reference point is Chiusi, with the station and the Chiusi-Chianciano Terme junction. The town stands at around four hundred and seventy metres, in climate zone E, so winters are properly cold.

Istat, the national statistics office, counted 6,990 residents in 2023, a slight fall of 1.0% since 2011. The population is old: an average age of 48.9 and 28.6% over 65, above the 26.9% for the province of Siena. Foreign residents make up 19.6%, a high share that reflects work in hotels and services. Households are small, 2.11 people on average, and declared incomes are below the provincial average.

Italy's Civil Protection Department puts Chianciano in seismic zone 3, like 30 other municipalities in the province, with an expected ground acceleration of about 0.144 g. A hotel turned into flats deserves a careful look: ask when the change of use was approved, whether the structure was assessed and how the heating, plumbing and shared costs were split.

On the slopes of the hill the report checks landslide hazard for the exact address. The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps here, so the report can trace a street address to its land parcel.

Key points

  • Medieval village on the hill, spa town below.
  • Many former hotels and buildings designed for visitors.
  • Over-65s at 28.6%, against 26.9% in the province.
  • Seismic zone 3, expected acceleration about 0.144 g.

Overview

Chianciano Terme is a municipality in the province of Siena, in Toscana. At the end of 2023 it had 6,990 residents, ranked 12 of 35 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Chianciano Terme is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (31 of 35) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.144 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 number of residents is nearly unchanged. The estimated average age is 49 years, in line with the province. 29% of residents are over 65 (the regional figure is 26%). Foreign residents make up 19.6% of the population. On average, a household has 2.1 members.

Income and climate

In tax year 2024, taxpayers in Chianciano Terme declared an average taxable income of 20,829 euros, below the provincial average (25,404 euros). The Italian average is 24,895 euros.

Chianciano Terme is in climate zone E, with 2,152 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 475 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Chianciano Terme has 5 schools and 3 pharmacies. The Overture Maps data also lists 2 grocery shops and supermarkets, 6 healthcare facilities, 7 sports facilities and 1 green area.

There are 0.3 grocery shops and supermarkets 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 6.6% of the land in Chianciano Terme, compared with 4.0% in the province and 6.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Chianciano Terme is not among the radon priority areas designated by the Regione Toscana in 2025. According to the ISPRA map, the estimated radon emission in the municipality is low. 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 open contaminated sites in Chianciano Terme; one has been cleaned up or closed.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Chianciano Terme: 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 Chianciano Terme 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 32 inhabited census areas in Chianciano Terme. Half of the residents live in areas scoring 75 or more.

Residents by band

  • fair 19.8%
  • good 60.1%
  • very good 20.1%

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 052009. The text on this page is generated automatically from the data.