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Semproniano: what to know before buying a home

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

Liveability index free for any address

Search for an address in Semproniano

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 Roma 1, Semproniano.

Semproniano, Maremma hill country between Amiata and the Albegna

In inland Maremma, where the hills climb towards Monte Amiata, Semproniano stands at around 600 metres above the Albegna valley. The municipality includes the main village and several hamlets, among them the small village of Rocchette di Fazio, spread across a landscape of woods, pasture and olive groves with very little built-up land. Grosseto is a long way off, and reaching the main services means fairly long drives: something to weigh up if you plan to live here all year.

The market is made up of stone houses in the village and farms and farmhouses in the countryside, some of them bought as holiday homes by people from other regions or from abroad. For an isolated farmhouse the practical checks are always the same: an access road you can use in winter, water supply, drainage, internet connection, and the condition of the roof and walls.

Semproniano's population is old and shrinking. In 2023 there were 978 residents, 166 fewer than in 2011 (a fall of 14.5%, according to Istat, the national statistics office); the average age is 53.4 against 49.1 in the province of Grosseto, and over-65s are 38.1%, against 29.0%. Households are small, at 1.79 people on average, and foreign residents make up 11.9%.

The province of Grosseto is split across three seismic zones, as classified by the Civil Protection Department. Semproniano is in zone 3, like 16 of the 28 municipalities, with expected ground acceleration of 0.138 g. For stone houses, have the walls and roof checked before drawing up any renovation plans.

Revenue Agency maps cover the municipality. The report traces the address to its land parcel, even in open countryside, and checks the official landslide and flood maps.

Key points

  • Inland Maremma hills, above the Albegna valley.
  • Over-65s at 38.1%, against 29.0% in the province.
  • 978 residents in 2023, 166 fewer than in 2011.
  • Seismic zone 3, expected acceleration 0.138 g.

Overview

Semproniano is a municipality in the province of Grosseto, in Toscana. At the end of 2023 it had 978 residents, among the smallest in the province (27 of 28).

Earthquakes

For Italy's Civil Protection Department, Semproniano is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (16 of 28) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.138 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 14.5%. The estimated average age is 53 years, higher than the province average (49). 38% of residents are over 65 (the regional figure is 26%). Foreign residents make up 11.9% of the population. On average, a household has 1.8 members.

Income and climate

In tax year 2024, taxpayers in Semproniano declared an average taxable income of 18,814 euros, below the provincial average (22,706 euros). The Italian average is 24,895 euros.

Semproniano is in climate zone E, with 2,357 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 601 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Semproniano has 3 schools and 1 pharmacy.

The data shows no grocery shops and supermarkets within the municipality, against a provincial average of 0.7 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 1.9% of the land in Semproniano, compared with 3.2% in the province and 6.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

Semproniano 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 contaminated sites in Semproniano.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Semproniano: 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 Semproniano 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 19 inhabited census areas in Semproniano. Half of the residents live in areas scoring 68 or more.

Residents by band

  • fair 39.3%
  • good 60.7%

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 053028. The text on this page is generated automatically from the data.