Department 91 — property sales (DVF data)
Population: 3,342 inhabitants (-7.5% between 2013 and 2023)
Rental yield in Briis-sous-Forges →
Estimated asking rents — "Carte des loyers" 2025 (French Ministry of Ecological Transition). Gross yield = annual rent / median sale price per sqm.
| Rate ‰ | France | |
|---|---|---|
| Vehicle thefts | 3.6 | 1.8 |
| Non-violent thefts | 6.0 | 9.1 |
| Vandalism | 5.7 | 7.9 |
Source: SSMSI, French Ministry of the Interior. Offences recorded by police and gendarmerie, per 1,000 inhabitants — unreported offences are not included.
Energy sieves (F+G): 12.0% (France: 9.9%)
| Label | Share |
|---|---|
| A | 5.9% |
| B | 2.8% |
| C | 24.7% |
| D | 35.1% |
| E | 19.6% |
| F | 5.9% |
| G | 6.1% |
Source: ADEME (2026), 393 diagnostics performed since July 2021 — share of diagnosed dwellings, not a census of the stock. G banned from rental since 2025, F in 2028, E in 2034.