Clay shrink-swell
Low exposurelevel 1 out of 3
Clay soil swells when wet and shrinks when it dries. These movements crack houses with shallow foundations, especially after a drought.
For a property: At this level, no soil survey is required by law.
Population
519
+1.4% since 2012
Median living standard
€30,600
per year per consumption unit
Public data cross-referenced (DGFiP, INSEE, ADEME), recorded on October 3, 2026.
Rents
Reference rents (2025)
| Property type | Median rent (€/m²) | Range (€/m²) |
|---|---|---|
| Flats, all sizes | 11.7 | 9.6 – 14.2 |
| Flats with 1-2 rooms | 14.4 | 11.3 – 18.2 |
| Flats with 3 or more rooms | 10.2 | 8.0 – 13.0 |
| Houses | 11.0 | 8.3 – 14.6 |
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 Siegen 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 Siegen
B
C
D
E
G
- A25.6%
- B513.9%
- C1233.3%
- D719.4%
- E513.9%
- F12.8%
- G411.1%
36 homes surveyed. 13.9% of the surveyed housing stock is rated F or G — that is 5 homes already affected, or about to be, by the letting ban. Including band E, targeted for 2034, the share rises to 27.8%.
Rental ban timeline
- 2025Gbanned
- 2028Fbanned
- 2034Ebanned
2021 loi Climat & Résilience (Climate and Resilience Act) — applies to new leases.
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
Siegen has 253 dwellings at the 2023 census, of which 90.2% are main residences; the rest is split between second homes and vacant dwellings.
What are dwellings used for?
- Main residences89.2%
- Second homes and occasional dwellings1.1%
- Vacant dwellings9.7%
Source: INSEE, census
Who lives in main residences?
- Tenants6913.8%
- Owner-occupiers43086.2%
Source: INSEE, census
Between 2012 and 2023, the housing stock grew by +9.8% while the population changed by +1.4%: homes are being built faster than the commune gains residents, a sign of smaller households, second homes or rising vacancy.
| Dwellings (2023) | 253 |
|---|---|
| Households | 228 |
| Siegen | Bas-Rhin | Grand Est | France | |
|---|---|---|---|---|
| Main residences2023 | 89.1%+6.7 pts vs France | 88.8% | 86.8% | 82.4% |
| Second homes2023 | 1.1%−8.7 pts vs France | 3.3% | 4.0% | 9.8% |
| Vacant dwellings2023 | 9.7%+1.9 pt vs France | 7.9% | 9.2% | 7.8% |
| Residents who own their home | 86.2%+25.4 pts vs France | 59.5% | 62.2% | 60.8% |
| Tenant residents | 13.8%−23.6 pts vs France | 38.5% | 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 Siegen
View the data
| Year | Flats (multi-dwelling buildings) | Detached houses | Total |
|---|---|---|---|
| 2021 | 0 | 2 | 2 |
| 2022 | 0 | 1 | 1 |
| 2023 | 0 | 2 | 2 |
| 2024 | 0 | 0 | 0 |
| 2025 | 0 | 2 | 2 |
| 2026* | 0 | 0 | 0 |
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
| Population | 519 |
|---|---|
| Households | 228 |
| People per household | 2.28 |
Change in the population of Siegen
45050019681982199920122023519 inhab.
Between 2012 and 2023, the population changed by +1.4%.
Source: INSEE, population census · recorded on October 3, 2026
Age breakdown
- Under 188817.2%
- 18 to 24295.6%
- 25 to 29203.8%
- 30 and over37673.3%
Source: INSEE
What do people aged 15 and over do?
- Employed workers27061.5%
- Unemployed153.4%
- Retired people12728.8%
- Pupils and students112.5%
- Other economically inactive173.8%
Source: INSEE
| Siegen | Bas-Rhin | Grand Est | France | |
|---|---|---|---|---|
| Population trend2012-2023 | +1.4%−3.0 pts vs France | +5.4% | +0.3% | +4.4% |
| Median age2023 | 46.9 years+4.4 yrs vs France | 41.7 years | 43.3 years | 42.5 years |
| Share aged under 252023 | 23.7%−5.1 pts vs France | 28.9% | 28.1% | 28.8% |
| Share aged 65 and over2023 | 21.4%≈ France | 19.7% | 21.6% | 21.3% |
| People per household2023 | 2.3+5% vs France | 2.2 | 2.2 | 2.2 |
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 Siegen, a household has 2.28 people on average, compared with 2.17 in France: more families, so demand leans more towards larger homes.
Source: INSEE, population census · recorded on October 3, 2026
Income and employment
| Siegen | Bas-Rhin | Grand Est | France | |
|---|---|---|---|---|
| Median living standard (per year)2023 | €30,600+18% vs France | €26,890 | €25,850 | €25,920 |
| Unemployment rate (aged 15-64)2023 | 5.3%−5.7 pts vs France | 10.1% | 11.3% | 11.0% |
| Activity rate (aged 15-64)2023 | 85.6%+9.9 pts vs France | 76.3% | 75.3% | 75.7% |
| Share of retired people (aged 15 and over)2023 | 28.8%+0.7 pt vs France | 26.2% | 28.6% | 28.1% |
| Share of pupils and students (aged 15 and over)2023 | 2.5%−5.1 pts vs France | 8.1% | 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 Siegen
2025303520142016201820202022202435
35 businesses in 2024, compared with 21 in 2014: +66.7% over the period.
View the data
| Year | Businesses |
|---|---|
| 2014 | 21 |
| 2015 | 25 |
| 2016 | 26 |
| 2017 | 26 |
| 2018 | 28 |
| 2019 | 25 |
| 2020 | 24 |
| 2021 | 28 |
| 2022 | 33 |
| 2023 | 32 |
| 2024 | 35 |
Source: INSEE, business demography information system · recorded on October 3, 2026
| Siegen | Bas-Rhin | Grand Est | France | |
|---|---|---|---|---|
| Number of businesses2024 | 35 | 107,442 | 425,315 | 6,437,729 |
| Change in the number of businesses2019-2024 | +40.0%+15.0 pts vs France | +25.0% | +23.2% | +25.0% |
| Businesses per 1,000 inhabitants2024 | 67.4−31% vs France | 92.3 | 76.4 | 97.3 |
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?
- Sole traders4957.0%
- SAS and SASU67.0%
- SARL and EURL1214.0%
- Civil companies, including SCI1719.8%
- Other forms22.3%
Sources: INSEE (SIRENE register), INPI (national business register) · recorded on October 3, 2026
Registrations and insolvency proceedings
* current year, incomplete
From 2021 to 2025, 401 registrations for 70 insolvency proceedings.
View the data
| Year | Registrations | Insolvency proceedings |
|---|---|---|
| 2021 | 91 | 13 |
| 2022 | 83 | 26 |
| 2023 | 61 | 9 |
| 2024 | 101 | 14 |
| 2025 | 65 | 8 |
| 2026* | 68 | 20 |
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 27.23% in Siegen.
| Rate voted by the commune | 22.19% |
|---|---|
| Intercommunal body, syndicates and special taxes | 5.04% |
| Overall rate on built properties (total) | 27.23% |
| Overall rate on undeveloped land | 106.19% |
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 Siegen, its property tax (taxe foncière) is €1,500 × 27.23% = €408 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.
| Year | Communal rate | Overall rate on built properties | Household waste |
|---|---|---|---|
| 2021 | 22.19% | 26.99% | — |
| 2022 | 22.19% | 27.14% | — |
| 2023 | 22.19% | 27.23% | — |
| 2024 | 22.19% | 27.23% | — |
Between 2021 and 2024, the overall rate changed by +0.24 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
Services and shops in the commune
- Education and early years
- Nursery or primary school
How to read this list. It shows the services for which at least one establishment is recorded in the commune. A service that does not appear is not necessarily absent: INSEE does not locate every facility with the same precision, and the list only includes the main ones.
Source: INSEE, permanent facilities database 2024
Fixed internet
- Dwellings and premises connectable to fibre92.8%296 connectable out of 319
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 Siegen, what they mean, and what they change for a property.
Seismicity
Moderatelevel 3 out of 5
France is divided into five seismicity zones, from 1 (very low) to 5 (high, in the Antilles).
For a property: From zone 3, new houses must comply with earthquake-resistant building rules. For an older property, no upgrading is required.
Radon potential
Low potentiallevel 1 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, no particular information is required when selling or letting.
Risk prevention plans
1in the commune
The commune is covered by a prevention plan for: flooding. 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 3, 2026