Isole Tremiti: what to know before buying a home
A municipality in the province of Foggia, Puglia. Official data on earthquakes, population, services and transport.
Liveability index free for any address
Land sheet 6 free checks
Search for an address in Isole Tremiti
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 della Cantina Sperimentale 1, Isole Tremiti.
Isole Tremiti, Puglia's archipelago in the middle of the Adriatic
Off the Gargano coast, the Tremiti Islands form a municipality of their own in the province of Foggia, inhabited all year round. The main islands are San Domino, with most of the houses and tourist facilities, and San Nicola, with the fortified abbey of Santa Maria a Mare; Capraia and Pianosa are uninhabited. The surrounding waters are a marine reserve and the archipelago is part of the Gargano National Park.
Buying a home here follows its own rules. The islands can only be reached by sea, with crossings that are reduced in winter and depend on the weather, and all building work has to be organised with materials and workers arriving by boat. Houses are few, often used in summer or let to tourists, and are subject to park and landscape restrictions: before making an offer, check planning compliance, any amnesty applications and what can be altered. In summer the economy revolves around tourism, with 18 bars and restaurants recorded.
In 2023 there were 494 residents, up 8.6% on 2011, according to Istat, the national statistics office. The average age is 48.4 against 45.2 for the province; over-65s make up 24.1% and foreign residents 9.1%. Declared incomes are close to the provincial average, slightly above it.
The Tremiti are in seismic zone 2 on the Civil Protection department's national scale, like 51 of the 61 municipalities in the province, with an expected ground acceleration of about 0.147 g. The climate, in zone C, is mild, but wind and salt wear down window frames, render and balcony ironwork.
The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps and the report goes from the address to the land parcel. On rocky islands with cliffs, slope stability is checked on the official maps for the exact spot.
Key points
- Archipelago inhabited all year, in the Gargano National Park.
- Reachable only by sea: building work has to come by boat too.
- 494 residents, up 8.6% since 2011.
- Seismic zone 2, expected acceleration about 0.147 g.
Overview
Isole Tremiti is a municipality in the province of Foggia, in Puglia. At the end of 2023 it had 494 residents, among the smallest in the province (59 of 61).
Earthquakes
For Italy's Civil Protection Department, Isole Tremiti is in seismic zone 2, a zone where strong earthquakes are possible. Most municipalities in the province (51 of 61) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.147 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in Isole Tremiti, 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 grown by 8.6%. The estimated average age is 48 years, higher than the province average (45). 24% of residents are over 65 (the regional figure is 24%). Foreign residents make up 9.1% of the population. On average, a household has 1.6 members.
Income and climate
In tax year 2024, taxpayers in Isole Tremiti declared an average taxable income of 18,995 euros, in line with the province (18,478 euros). The Italian average is 24,895 euros.
Isole Tremiti is in climate zone C, with 953 heating degree days: heating may be switched on from 15 November to 31 March, for up to 10 hours a day. The same table puts the town hall at 70 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Isole Tremiti has 1 school and 1 pharmacy. The Overture Maps data also lists 3 sports facilities and 1 green area.
The data shows no grocery shops and supermarkets within the municipality, against a provincial average of 0.6 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 6.3% of the land in Isole Tremiti, compared with 4.1% in the province and 8.2% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Isole Tremiti is not among the radon priority areas designated by the Regione Puglia in 2025. 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 Isole Tremiti.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Isole Tremiti: 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 Isole Tremiti 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 3 inhabited census areas in Isole Tremiti. Half of the residents live in areas scoring 59 or more.
Residents by band
- fair 100.0%
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
- Seismic classification of municipalities, Dipartimento della Protezione Civile. Licence CC BY 4.0, updated to 2025-05.
- MPS04 seismic hazard model, INGV. Licence CC BY 4.0, 2004 model.
- Data by census section, Istat. Licence CC BY 4.0, residents at the end of 2023, compared with the 2011 census.
- Places, Overture Maps Foundation. Licence CDLA Permissive 2.0 and others depending on provider, release 2026-10-21.0.
- Income and main IRPEF variables by municipality, MEF, Dipartimento delle Finanze. Licence CC BY 3.0 IT, tax year 2024.
- Climate zones and heating degree days of municipalities (Presidential Decree 412/1993, Annex A), Normattiva. Licence CC BY 4.0, current text.
- Land take, territorial dynamics and ecosystem services, ISPRA e SNPA. Licence CC BY 4.0, 2024 data.
- Predictive radon map by municipality, ISPRA. Licence CC BY 4.0, version 2022-11.
- Radon priority areas (Legislative Decree 101/2020), Regione Puglia, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2025.
- Contaminated sites, ISPRA, MOSAICO - Banca dati nazionale dei siti oggetto di procedimento di bonifica. Licence CC BY 4.0, updated to 12 November 2026.
- Liveability index by census area, Vicinalia, from the data in the report sections. Licence CC BY-SA 4.0, worked out on 30 September 2026.
- List of Italian municipalities, Istat. Licence CC BY 4.0, updated to 21 February 2026.
ISTAT code 071026. The text on this page is generated automatically from the data.