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Municipality profile · department 08

Property in Le Châtelet-sur-Sormonne

In Le Châtelet-sur-Sormonne (08), the median property price stands at €953/m² across 31 recorded transactions (DVF).

Median price per m²
€953/m²
31 sales over ten years
Sales in 2025
2
flats and houses
Population
174
+4.2% since 2012
Median living standard
€23,430
per year per consumption unit

Public data cross-referenced (DGFiP, INSEE, ADEME), recorded on October 3, 2026.

The municipality has 174 inhabitants, a change of +8.8% ; median living standard there reaches €23,430 a year.

Prices and sales

Number of sales per year in Le Châtelet-sur-Sormonne

Sales of flats and houses recorded each year. This is the market's thermometer: a price is only meaningful if sales are actually completed.

2 sales recorded in 2025. The peak of the period remains 2023, with 7 sales.

View the data
Sales and median price by year
YearSalesMedian price per m²Total sales value
20161—€20,000
20172—€49,000
20181—€45,000
20192—€114,500
20201—€130,000
20214—€283,500
20224—€410,000
20237€1,000/m²€774,975
20244—€477,000
20252—€174,000

Source: DVF (DGFiP), land value request data · recorded on October 3, 2026

Median price per m² over ten years€953/m²
Sales in 20252
Average of the previous five years4
Total sales value in 2025€174,000
Sales recorded over ten years31

Too few sales for an annual price. With 2 sales in 2025, a median price would describe a handful of properties, not a market: it is only published from five sales in the year.

How to read these figures. The median price splits the market in two: half of sales were made below it, half above. It withstands the few extreme sales that distort a small commune better than the average does.

The data come from DVF, the file of sales actually recorded by notaries, not from advertised prices, which are asking prices rather than agreed ones. Only sales of a flat or a house with a known floor area are counted. DVF does not cover Alsace-Moselle, which is governed by the land register (livre foncier).

Source: DVF (DGFiP) · recorded on October 3, 2026

Rents

Reference rents (2025)

Median advertised rent per m² by property type in Le Châtelet-sur-Sormonne, 2025
Property typeMedian rent (€/m²)Range (€/m²)
Flats, all sizes7.96.3 – 9.8
Flats with 1-2 rooms9.17.0 – 11.9
Flats with 3 or more rooms7.25.8 – 8.9
Houses6.55.2 – 8.3

How to read this table. This is a predicted advertised rent, including service charges, per square metre per month — not the rent signed in the lease. The range brackets the estimate: most listings in the municipality fall within it. These estimates are recalculated every year with a new model, so two releases cannot be compared with each other.

Estimations ANIL, à partir des données du Groupe SeLoger et de leboncoin · Rent map 2025

Energy performance of the housing stock

Breakdown of homes in Le Châtelet-sur-Sormonne 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 Le Châtelet-sur-Sormonne

  • A00.0%
  • B00.0%
  • C512.5%
  • D1230.0%
  • E820.0%
  • F1127.5%
  • G410.0%

40 homes surveyed. 37.5% of the surveyed housing stock is rated F or G — that is 15 homes already affected, or about to be, by the letting ban. Including band E, targeted for 2034, the share rises to 57.5%.

Rental ban timeline
  1. 2025Gbanned
  2. 2028Fbanned
  3. 2034Ebanned

2021 loi Climat & Résilience (Climate and Resilience Act) — applies to new leases.

Counts and shares by band, across all energy surveys recorded in the municipality.

Source: ADEME, energy performance certificate database · recorded on October 3, 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.

Housing stock

Le Châtelet-sur-Sormonne has 102 dwellings at the 2023 census, of which 78.1% are main residences; the rest is split between second homes and vacant dwellings.

What are dwellings used for?

Housing categories in Le Châtelet-sur-SormonneMain residences : 80.4%Second homes and occasional dwellings : 4.9%Vacant dwellings : 14.7%
  • Main residences80.4%
  • Second homes and occasional dwellings4.9%
  • Vacant dwellings14.7%
A vacant dwelling is one unoccupied on the census date: awaiting sale, letting or works, or simply left empty.

Source: INSEE, census

Who lives in main residences?

Housing tenure of residents of Le Châtelet-sur-SormonneTenants : 17.6%Owner-occupiers : 76.5%Housed free of charge : 5.9%
  • Tenants2917.6%
  • Owner-occupiers12676.5%
  • Housed free of charge105.9%
Share of RESIDENTS according to whether their household owns, rents or is housed free of charge, not the share of dwellings.

Source: INSEE, census

Between 2012 and 2023, the housing stock (+4.6%) and the population (+4.2%) changed at the same pace.

Dwellings (2023)102
Households80
Housing: Le Châtelet-sur-Sormonne compared with its département, its region and France
Le Châtelet-sur-SormonneArdennesGrand EstFrance
Main residences202380.4%−2.0 pts vs France84.7%86.8%82.4%
Second homes20234.9%−4.9 pts vs France4.0%4.0%9.8%
Vacant dwellings202314.7%+6.9 pts vs France11.3%9.2%7.8%
Residents who own their home76.5%+15.7 pts vs France62.9%62.2%60.8%
Tenant residents17.6%−19.8 pts vs France35.6%35.9%37.4%

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.

Dwellings authorised for construction in Le Châtelet-sur-Sormonne

Dwellings for which a building permit has been granted, by year of authorisation. An authorised dwelling is not yet built: allow two to three years before delivery.
View the data
Dwellings authorised by year
YearFlats (multi-dwelling buildings)Detached housesTotal
2021000
2022000
2023022
2024000
2025011
2026*000

Source: Sit@del, ministry responsible for housing · recorded on October 3, 2026

Sources: INSEE (census), Sit@del · recorded on October 3, 2026

Population and households

Population174
Households80
People per household2.19

Change in the population of Le Châtelet-sur-Sormonne

Population trendPopulation: 187 in 1968, 174 in 202316018020019681982199920122023174 inhab.
Municipal population at each census. INSEE does not publish a population every year: the points are the census years available.

Between 2012 and 2023, the population changed by +4.2%.

Source: INSEE, population census · recorded on October 3, 2026

Age breakdown

Age breakdown of the population of Le Châtelet-sur-SormonneUnder 18 : 20.6%18 to 24 : 3.6%25 to 29 : 1.8%30 and over : 73.9%
  • Under 183520.6%
  • 18 to 2463.6%
  • 25 to 2931.8%
  • 30 and over12673.9%
Population aged 2 and over, 2023 census.

Source: INSEE

What do people aged 15 and over do?

Employment status of residents aged 15 and over in Le Châtelet-sur-SormonneEmployed workers : 47.4%Unemployed : 11.3%Retired people : 33.8%Pupils and students : 1.5%Other economically inactive : 6.0%
  • Employed workers6547.4%
  • Unemployed1611.3%
  • Retired people4733.8%
  • Pupils and students21.5%
  • Other economically inactive86.0%
Each resident aged 15 or over is counted once, 2023 census.

Source: INSEE

Le Châtelet-sur-Sormonne compared with its département, its region and France
Le Châtelet-sur-SormonneArdennesGrand EstFrance
Population trend2012-2023+4.2%≈ France-6.0%+0.3%+4.4%
Median age202344.1 years+1.6 yr vs France45.1 years43.3 years42.5 years
Share aged under 25202325.6%−3.2 pts vs France27.2%28.1%28.8%
Share aged 65 and over202321.4%≈ France23.2%21.6%21.3%
People per household20232.2≈ France2.22.22.2

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.

Why the number of people per household matters. A household is everyone who shares the same dwelling. The fewer people it has, the more demand shifts towards small homes — studios and one-bedroom flats, sought by people living alone, students and retirees; the more it has, the more demand shifts towards family homes with three or more rooms.

In Le Châtelet-sur-Sormonne, a household has 2.19 people on average, the same as in France (2.17).

Source: INSEE, population census · recorded on October 3, 2026

Income and employment

Income and employment: Le Châtelet-sur-Sormonne compared with its département, its region and France
Le Châtelet-sur-SormonneArdennesGrand EstFrance
Median living standard (per year)2023€23,430−10% vs France€23,500€25,850€25,920
Unemployment rate (aged 15-64)202319.7%+8.7 pts vs France14.4%11.3%11.0%
Activity rate (aged 15-64)202378.4%+2.7 pts vs France74.3%75.3%75.7%
Share of retired people (aged 15 and over)202333.8%+5.7 pts vs France31.3%28.6%28.1%
Share of pupils and students (aged 15 and over)20231.5%−6.1 pts vs France5.6%7.2%7.6%

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.

How to read these figures. The standard of living is a household's disposable income (salaries, pensions and benefits, after tax) divided by its number of consumption units: the first adult counts as 1, other people aged 14 or over as 0.5, and each child as 0.3. It allows a single person and a family to be compared.

The poverty rate is the share of residents whose standard of living is below 60% of the national median. INSEE does not publish it for small communes, for reasons of statistical confidentiality: its absence is not a zero.

The unemployment rate here is the census one: people who declare themselves without work and looking for it, among the economically active aged 15 to 64. It is higher than INSEE's quarterly rate, which follows a stricter international definition.

Sources: INSEE (census, Filosofi) · recorded on October 3, 2026

Economic fabric

Number of businesses located in Le Châtelet-sur-Sormonne

Number of businesses located in Le Châtelet-sur-SormonneBusinesses: 8 in 2014, 9 in 202468102014201620182020202220249
Businesses in market activities, excluding agriculture, located in the commune and counted at 31 December each year. This is a stock: it shows the size of the local economy, not how much it is being renewed.

9 businesses in 2024, compared with 8 in 2014: +12.5% over the period.

View the data
Number of businesses by year
YearBusinesses
20148
20156
20167
20176
20186
20197
202010
20219
20229
20238
20249

Source: INSEE, business demography information system · recorded on October 3, 2026

Businesses: Le Châtelet-sur-Sormonne compared with its département, its region and France
Le Châtelet-sur-SormonneArdennesGrand EstFrance
Number of businesses2024917,048425,3156,437,729
Change in the number of businesses2019-2024+28.6%+3.6 pts vs France+20.8%+23.2%+25.0%
Businesses per 1,000 inhabitants202451.7−47% vs France64.176.497.3

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?

Legal forms of businesses in Le Châtelet-sur-SormonneSole traders : 73.1%SAS and SASU : 7.7%Civil companies, including SCI : 11.5%Other forms : 7.7%
  • Sole traders1973.1%
  • SAS and SASU27.7%
  • Civil companies, including SCI311.5%
  • Other forms27.7%
Businesses with an open establishment in Le Châtelet-sur-Sormonne, by legal form. A sole trader operates in their own name — this is the status of micro-entrepreneurs; an SCI most often holds property assets rather than running an activity. This count is broader than the INSEE one above, which only includes market businesses with an economic activity.

Sources: INSEE (SIRENE register), INPI (national business register) · recorded on October 3, 2026

Registrations and insolvency proceedings

* current year, incomplete

On one side, announcements of registrations, business creations and takeovers; on the other, court-ordered safeguard, recovery and liquidation proceedings. Legal notices published under postcode 08150. A postcode may cover several communes: in a village, these figures describe the wider catchment area, not the commune alone.

From 2021 to 2025, 174 registrations for 37 insolvency proceedings.

View the data
Registrations and insolvency proceedings
YearRegistrationsInsolvency proceedings
2021318
2022536
20233513
2024315
2025245
2026*344

Source: BODACC, official bulletin of civil and commercial announcements · recorded on October 3, 2026

Sources: INSEE, BODACC · recorded on October 3, 2026

Local taxation

In 2024, the overall property tax rate on built properties is 52.65% in Le Châtelet-sur-Sormonne.

Rate voted by the commune48.09%
Intercommunal body, syndicates and special taxes4.56%
Overall rate on built properties (total)52.65%
Overall rate on undeveloped land82.82%
Worked example

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 Le Châtelet-sur-Sormonne, its property tax (taxe foncière) is €1,500 × 52.65% = €790 a year.

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.

Property tax rate by year
YearCommunal rateOverall rate on built propertiesHousehold waste
202148.09%52.19%—
202248.09%52.29%—
202348.09%52.64%—
202448.09%52.65%—

Between 2021 and 2024, the overall rate changed by +0.46 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 3, 2026

Living environment

Public transport

1 public transport stops are located in the municipality, or 5.7 stops per 1,000 inhabitants.

Public transport stops in Le Châtelet-sur-Sormonne

Map of public transport stops in Le Châtelet-sur-Sormonne
  • Stops1

Outline of the commune, north at the top.

Each dot is a bus, tram, metro or train stop. The map shows where the network is dense: it says nothing about frequency of service.

Source: transport.data.gouv.fr, scheduled timetables of networks · recorded on October 3, 2026

Stops by network

  • Agrégat des réseaux urbains et interurbains du Grand Est1

Fixed internet

  • Dwellings and premises connectable to fibre98.3%
    113 connectable out of 115

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

Natural and technological risks

The risks identified by the State in the territory of Le Châtelet-sur-Sormonne, what they mean, and what they change for a property.

Seismicity

Lowlevel 2 out of 5

France is divided into five seismicity zones, from 1 (very low) to 5 (high, in the Antilles).

For a property: In this zone, no seismic rules apply to detached houses.

Radon potential

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.

Classified installations (ICPE)

1in the commune

A classified installation is an activity that the law subjects to declaration or authorisation because it may cause nuisance: factory, warehouse, livestock farm, petrol station, waste recycling centre, boiler room.

For a property: Their number mainly reflects the commune's economic activity: most pose no danger to neighbours. What matters is their nature and their distance from the property.

Underground cavities

4in the commune

Former quarries, cellars, galleries or military works recorded beneath the commune.

For a property: A cavity can cause localised subsidence or collapse of the ground. Before buying, check whether the plot is close to a known cavity.

Installations and cavities recorded in Le Châtelet-sur-Sormonne

Map of classified installations and underground cavities in Le Châtelet-sur-SormonneClassified installations — EARL JEUNIEAUX PORTEBOISUnderground cavities — LE PerotUnderground cavities — LE PerotUnderground cavities — Le PerotUnderground cavities — La Miniere
  • Classified installations1
  • Underground cavities4

Outline of the commune, north at the top.

Location of known classified installations, Seveso sites and underground cavities.

Source: Géorisques, Ministry of Ecological Transition · recorded on October 3, 2026

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 3, 2026

Frequently asked questions — Le Châtelet-sur-Sormonne

What is the price per m² in Le Châtelet-sur-Sormonne?
The median recorded price is €953/m², calculated across 31 DVF transactions (source DVF/INSEE, data as of October 3, 2026).
How many inhabitants does Le Châtelet-sur-Sormonne have?
Le Châtelet-sur-Sormonne has 174 inhabitants, with a change of +8.8% (INSEE census).
What share of energy-inefficient homes are there in Le Châtelet-sur-Sormonne?
57.5% of surveyed homes are rated E, F or G on the energy certificate (source ADEME).
What is the property tax rate in Le Châtelet-sur-Sormonne?
The overall property tax rate on built properties is 52.6%, of which 48.1% is voted by the commune (source DGFiP).

The same data, put to work.

What the observatory publishes, the five MORYA tools put to use.