🏙 Property in Sinnamary (97315)
Sinnamary has a population of 2,756, a density of about 2 inhabitants per km². Advertised rents for flats are around €13.3/m² per month (2025). Between 2022 and 2025, advertised rents are up by 7.4%. The overall property tax rate on buildings (taxe foncière) is 51.85% in 2025, up by 1.13 point compared with 2021. Sinnamary has had 1 natural disaster declaration since 1982, 1 of them for floods or mudslides. Its radon potential is rated significant.
📰 Sinnamary at a glance
Département: Guyane (973) · Region: Guyane
Size and profile
Sinnamary has a population of 2,756, a size close to the median for its département (4,961 inhabitants). Population density there is 2 inhabitants per km²: a very rural profile.
Rents and prices
Advertised rents there are well below those in its département: €13.3/m² per month, against €14.0/m² for the median of the municipalities in its département. Between 2022 and 2025, the advertised rent has risen by 7.4%, at the same pace as the département median (6.3%).
Incomes and taxation
The overall property tax rate (51.85%) is 9.1 points lower than the median of the municipalities in its département (60.92%).
Hazards and energy
Sinnamary has had 1 natural disaster declaration since 1982, i.e. fewer than the département median (2). A natural risk prevention plan is in force in the municipality. Its radon potential is rated significant (class 3).
Points to watch before buying or renting
- Flood risk is listed: check the risk statement for the property and, if there is one, the prevention plan attached to the local urban plan.
- Significant radon potential: a risk statement must be attached to the sale or lease; the radon level in the home can be measured.
Summary written automatically from the figures on this page, comparing the municipality with the median of the municipalities in its département (or of France when the département has too few municipalities with data).
💶 Prices and rents: how they have changed
Advertised rent for flats (€/m²/month)
Between 2022 and 2025: +7.4%
| Advertised rent 2025 | €/m² per month |
|---|---|
| Flat, 1 to 2 rooms | 15.6 |
| Flat (all) | 13.3 |
| Flat, 3 rooms or more | 12.0 |
| House | 13.1 |
94 listings observed. Estimate calculated across a group of neighbouring municipalities, less precise than a municipal estimate. These are advertised rents, service charges included: they are higher than the rents of existing leases. The estimation method was revised in 2022: only the 2022 and later editions, which are comparable with each other, are shown.
🌊 Natural hazards
Hazards listed for the municipality:
Natural disaster declarations per year (since 1982)
1 declaration in total, 1 of them in the last ten years
| Indicator | Value |
|---|---|
| “floods and mudslides” declarations | 1 |
| Natural risk prevention plans in force | 1 |
| Municipal information document (DICRIM) published in | 2013 |
| Radon potential (class 3 of 3) | Significant |
A declaration recognises a state of natural disaster for a given event; it triggers the “natural disasters” cover of home insurance policies and of the building’s insurance. “Drought” declarations relate to the shrinking and swelling of clay soils, a frequent cause of cracks in buildings. A risk statement (état des risques) must in particular be attached to a sale or lease when the property lies in an area covered by a prevention plan, in seismic zone 2 to 5, or with a class 3 radon potential. This page presents municipal data: it does not replace the risk statement drawn up for the property’s address.
🧾 Property tax and local taxation
Overall property tax rate (buildings, %)
Between 2021 and 2025: +1.1 point
Household waste collection tax rate (%)
Between 2021 and 2025: +0.9 point
The overall rate adds the municipal share and the inter-municipal share. The tax due by an owner equals this rate applied to half of the home’s cadastral rental value, reduced where applicable by exemptions.
❓ Frequently asked questions
What is the average rent per m² in Sinnamary?
The rent map shows an advertised rent of about €13.3/m² per month for a flat in 2025, with a prediction interval of €10.1 to €17.4/m². Advertised rents include service charges.
What is the property tax rate in Sinnamary?
The overall property tax rate on buildings (municipality and inter-municipal authority) is 51.85% in 2025. The amount due depends on this rate and on the property’s cadastral rental value.
What are the natural hazards in Sinnamary?
The hazards listed for the municipality are: flood, forest fire, industrial risk. 1 natural disaster declarations have been published since 1982 (1 of them in the last ten years). Source: GASPAR database (Géorisques).
📊 Sinnamary compared with neighbouring municipalities
| Municipality | Distance | Inhabitants | Rent (€/m²/month) | Median price (€/m²) | Average income | Property tax | DPE F or G | Disaster decl. |
|---|---|---|---|---|---|---|---|---|
| Sinnamary | — | 2,756 | 13.3 | — | — | 51.85% | — | 1 |
| Iracoubo | 32 km | 1,662 | 13.3 | — | — | 70.55% | — | 1 |
| Kourou | 45 km | 24,824 | 15.7 | — | — | 78.19% | — | 1 |
The 2 nearest municipalities (as the crow flies, from the centre). Latest values available; “—”: data not published or too few sales. Rents are estimated for groups of municipalities: neighbours may share the same estimate. The rank compares the municipality with these neighbours, not with the whole of France.
📚 Sources and method
Each indicator comes from an open dataset that is kept over time: when a source is updated or corrected, the old value stays on record, which makes it possible to follow changes from one year to the next.
- Ministère de la Transition écologique, base GASPAR (Géorisques) — Licence Ouverte 2.0. Retrieved in October 2026.
- Carte des loyers © Ministère de la Transition écologique / ANIL — Licence Ouverte 2.0. Retrieved in October 2026.
- INSEE, API Géo (Etalab) — Licence Ouverte 2.0. Retrieved in October 2026.
- ASN / IRSN, potentiel radon des communes — Licence Ouverte 2.0. Retrieved in October 2026.
- DGFiP, fiscalité locale des particuliers — Licence Ouverte 2.0. Retrieved in October 2026.
- Sale prices: single-property sales (flats) in the streets where the register lists co-ownerships; median calculated from 10 sales or more.