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Buonconvento: 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 Buonconvento

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 Dante Alighieri 1, Buonconvento.

Buonconvento, the walled village in the Arbia valley

Buonconvento is a village enclosed by medieval walls in the Arbia valley, south of Siena, near the point where the Arbia joins the Ombrone. The Via Cassia and the route of the Via Francigena pilgrim way both pass through it, surrounded by the farmed hills of the Crete Senesi and, further south, the Val d'Orcia. The town hall stands at around 150 metres on the valley floor.

Buyers find three kinds of property: flats inside the walls, often in old buildings with heritage restrictions; newer houses outside the walls, handy for cars and services; and farmhouses in the countryside, with renovation costs that need careful assessment. Siena is about half an hour away by car. The village lies close to two rivers, and for homes on the valley floor the most useful check is the flood maps the report looks up for the address.

According to Istat, the national statistics office, there were 2,984 residents in 2023, down 6.2% since 2011. The average age is 46.9, close to the provincial 47.6, with over-65s at 25.9% and foreign nationals at 9.9%. Declared incomes are a little below the provincial average.

The municipality is in seismic zone 3 of the Civil Protection classification, with an expected ground acceleration of 0.142 g. For the stone and brick houses of the centre and for farmhouses, ask what structural work has been done and have an engineer check the roof and floors. The climate is zone D, with hot summers and fairly mild winters.

Key points

  • Walled village in the Arbia valley, south of Siena.
  • Old centre, homes outside the walls and farmhouses.
  • 2,984 residents, down 6.2% since 2011.
  • Seismic zone 3, expected acceleration 0.142 g.

Overview

Buonconvento is a municipality in the province of Siena, in Toscana. At the end of 2023 it had 2,984 residents, ranked 21 of 35 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Buonconvento 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 0.142 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 resident population has fallen by 6.2%. The estimated average age is 47 years, in line with the province. 26% of residents are over 65 (the regional figure is 26%). Foreign residents make up 9.9% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Buonconvento declared an average taxable income of 24,062 euros, below the provincial average (25,404 euros). The Italian average is 24,895 euros.

Buonconvento is in climate zone D, with 1,598 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 147 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Buonconvento has 3 schools and 1 pharmacy. The Overture Maps data also lists 3 grocery shops and supermarkets, 2 healthcare facilities and 3 sports facilities.

There are 1.0 grocery shops and supermarkets per 1,000 residents, more 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 3.9% of the land in Buonconvento, 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

Buonconvento 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 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 Buonconvento. 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 Buonconvento: 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 Buonconvento 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 42 inhabited census areas in Buonconvento. Half of the residents live in areas scoring 70 or more.

Residents by band

  • modest 0.7%
  • fair 26.0%
  • good 45.7%
  • very good 27.5%

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 052003. The text on this page is generated automatically from the data.