Municipality profile · department 976
The municipality has 8,920 inhabitants.
Public data cross-referenced (DGFiP, INSEE, ADEME), recorded on October 4, 2026.
Breakdown of homes in Chirongui by energy performance certificate (EPC) band. Since the loi Climat & Résilience (Climate and Resilience Act), it is this band that determines whether a home may be let.
Breakdown of energy performance certificates in Chirongui
2 homes surveyed. No home rated F or G appears in the recorded energy surveys.
2021 loi Climat & Résilience (Climate and Resilience Act) — applies to new leases.
Source: ADEME, energy performance certificate database · recorded on October 4, 2026
Why this breakdown matters. A dwelling rated G can no longer be let under a new lease since 1st January 2025; F will follow in 2028 and E in 2034. A commune whose stock is largely rated F or G therefore faces a wall of renovation work, or an exit from the rental market.
Note: these figures cover surveyed homes, not the entire stock. A survey is only required on sale or letting, so homes occupied for a long time are under-represented.
| Private dwellings vacant for more than two years (2024) | 360 |
|---|---|
| Share of private housing stock | 20.5% |
Why vacancy of more than two years. A dwelling that stands empty for a few months is waiting for a buyer, a tenant or the end of building work: that is the normal breathing of the market. Empty for more than two years, it has left the market — a run-down property, a blocked inheritance, an owner who will neither let nor sell. We do not publish total vacancy from the same file: its national level varies by a third from one year to the next without the housing stock having changed, which rules out any comparison.
Source: LOVAC (Cerema, DGFiP), vacant dwellings in the private housing stock · recorded on October 4, 2026
Dwellings authorised for construction in Chirongui
| Year | Flats (multi-dwelling buildings) | Detached houses | Total |
|---|---|---|---|
| 2021 | 57 | 108 | 165 |
| 2022 | 21 | 67 | 88 |
| 2023 | 72 | 79 | 151 |
| 2024 | 0 | 43 | 43 |
| 2025 | 164 | 35 | 199 |
| 2026* | 0 | 6 | 6 |
Source: Sit@del, ministry responsible for housing · recorded on October 4, 2026
Sources: INSEE (census), Sit@del · recorded on October 4, 2026
| Population | 8,920 |
|---|
Source: INSEE, population census · recorded on October 4, 2026
Number of businesses located in Chirongui
| Year | Businesses |
|---|---|
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 78 |
| 2018 | 80 |
| 2019 | 77 |
| 2020 | 71 |
| 2021 | 66 |
| 2022 | 75 |
| 2023 | 149 |
| 2024 | 184 |
Source: INSEE, business demography information system · recorded on October 4, 2026
| Chirongui | Mayotte | Mayotte | France | |
|---|---|---|---|---|
| Number of businesses2024 | 184 | 5,359 | — | 6,437,729 |
| Change in the number of businesses2019-2024 | +139.0%+114.0 pts vs France | +146.4% | — | +25.0% |
Under each value for the municipality: its gap with France. For a rate, the gap is in percentage points (12.4% vs 7.8% = +4.6 pts); for an amount or a ratio, as a percentage of the national value.
In what form do businesses operate?
Sources: INSEE (SIRENE register), INPI (national business register) · recorded on October 4, 2026
Registrations and insolvency proceedings
* current year, incomplete
From 2021 to 2025, 501 registrations for 15 insolvency proceedings.
| Year | Registrations | Insolvency proceedings |
|---|---|---|
| 2021 | 100 | 0 |
| 2022 | 83 | 0 |
| 2023 | 97 | 6 |
| 2024 | 94 | 6 |
| 2025 | 127 | 3 |
| 2026* | 106 | 1 |
Source: BODACC, official bulletin of civil and commercial announcements · recorded on October 4, 2026
Sources: INSEE, BODACC · recorded on October 4, 2026
In 2024, the overall property tax rate on built properties is 21.65% in Chirongui.
| Rate voted by the commune | 14.98% |
|---|---|
| Intercommunal body, syndicates and special taxes | 6.67% |
| Overall rate on built properties (total) | 21.65% |
| Household waste collection tax (TEOM) | 19.90% |
| Overall rate on undeveloped land | 13.43% |
A dwelling with a cadastral rental value of €3,000 has a tax base of €1,500: the law sets it at half the rental value. In Chirongui, its property tax (taxe foncière) is €1,500 × 21.65% = €325 a year.
On top of this comes the household waste collection tax (TEOM), calculated on the same base: €1,500 × 19.90% = €298. A landlord can recover it from their tenant; the property tax (taxe foncière), by contrast, remains payable by the owner.
These amounts are before the collection charges retained by the State. Your property's rental value is shown on your property tax (taxe foncière) notice.
| Year | Communal rate | Overall rate on built properties | Household waste |
|---|---|---|---|
| 2021 | 14.98% | 21.02% | 19.90% |
| 2022 | 14.98% | 20.99% | 19.90% |
| 2023 | 14.98% | 21.48% | 19.90% |
| 2024 | 14.98% | 21.65% | 19.90% |
Between 2021 and 2024, the overall rate changed by +0.63 point.
How to read these rates. Property tax (taxe foncière) is calculated by multiplying the property's tax base by the overall rate: this is the figure to compare between communes, not the communal rate alone. Since 2021, départements no longer collect property tax on buildings; their former share is included in the communal rate.
A high rate does not mean a high tax. The cadastral rental value is not the market rent: it is an administrative estimate based on 1970 rents, revalued each year by a national coefficient. In a town with old, low rental values, a 50% rate can cost less than a 25% rate elsewhere.
Source: DGFiP, local taxation for individuals (2024 scale) · recorded on October 4, 2026
| Establishments | 1 |
|---|---|
| Average exam pass rate | 88.0% |
| Average index of social position | 82.8 |
| Establishment | Type | Success rate | Social position |
|---|---|---|---|
| COLLEGE MARCEL HENRY | Collège (lower secondary school) | 88.0% | 82.8 |
How to read these figures. The pass rate is that of the brevet for a collège and of the baccalauréat for a lycée. The index of social position summarises pupils' social background: the national average is close to 100, and a higher index indicates more advantaged families. Nursery and primary schools are not covered.
Source: Ministry of National Education · recorded on October 4, 2026
Connectable means that optical fibre reaches the building or the street and a subscription can be taken out, not that the dwelling is already subscribed.
Source: ARCEP, fibre rollout · situation as at June 2026
Of the 76 passenger cars registered in the commune in 2024:
Why this share may look high. These are cars registered during the year, not all those on the road: electric vehicles weigh far more in recent purchases than in the overall fleet. Company and rental vehicles are also registered at the company's address, which inflates the share in communes that host head offices or rental firms.
Source: Ministry of Ecological Transition, passenger car registrations · recorded on October 4, 2026
The risks identified by the State in the territory of Chirongui, what they mean, and what they change for a property.
Significant potentiallevel 3 out of 3
Radon is a natural radioactive gas that rises from granitic and volcanic soils and can build up in poorly ventilated rooms, especially on ground floors and in basements.
For a property: At this level, the seller or landlord must inform the buyer or tenant. Good ventilation and a sealed ground floor are usually enough to reduce exposure.
2in the commune
The commune is covered by a prevention plan for: flooding, ground movement. This is a document issued by the prefect that delimits the exposed zones.
For a property: In the delimited zones, building or extending may be prohibited or subject to requirements. The plan does not necessarily cover the whole commune: only the risk statement provided before a sale or letting says whether the address is affected.
A prevention plan is not a bad sign in itself. It shows that the risk is mapped and regulated; it is its absence for a known hazard that should raise questions.
This page describes the commune, not an address. Before a sale or a letting, the seller or landlord must provide a risk statement drawn up for the property. You can obtain one free of charge for any address at georisques.gouv.fr.
Source: Géorisques, Ministry of Ecological Transition · recorded on October 4, 2026