Buying a house in Trappes
34,689 inhabitants, Yvelines (78), Île-de-France.
Median price in Trappes over five years of DVF: €3,568/m² for houses (197 sales) and €2,880/m² for flats (875 sales). That is 8% above the median of the municipalities of Yvelines. Property tax rate on buildings in 2025: 37.26% (municipality and intercommunality), plus a household waste tax of 5.59%. 31% above the department median (28.54%). Of 10,521 homes in Trappes with an energy certificate, 416 are rated F or G (4%). Home burglaries recorded in 2025: 2.1 per 1,000 homes, against 5.7 in the department and 5.6 in France. Among the municipalities of Yvelines, Trappes ranks 95th of 254 for the median house price, 116th of 145 for flat prices, 35th of 259 for the property tax rate, 234th of 245 for the share of homes rated F or G. INSEE code 78621, postcode 78190. Nearest municipality: Montigny-le-Bretonneux, 2.2 km away.
Your address in Trappes
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Trappes in figures
| Indicator | Trappes | Yvelines | France |
|---|---|---|---|
| Population | 34,689 | 1,485,086 | - |
| House, median price | €3,568/m² | €3,892/m² | - |
| Flat, median price | €2,880/m² | €4,100/m² | - |
| Property tax (buildings), 2025 rate | 37.26% | 28.54% (median) | 40.3% (median) |
| Household waste tax (TEOM) | 5.59% | - | - |
| Homes rated F or G | 4% | 14.4% (median) | 15.4% (median) |
| Burglaries / 1,000 homes | 2.1 | 5.7 | 5.6 |
| Physical violence outside family / 1,000 | 3.9 | 2.3 | 3.2 |
| Criminal damage / 1,000 | 7.5 | 6.3 | 7.9 |
| Transfer duties (department) | 5% | 5% | - |
Questions
What is the price per m² in Trappes?
Median price in Trappes over five years of DVF: €3,568/m² for houses (197 sales) and €2,880/m² for flats (875 sales). That is 8% above the median of the municipalities of Yvelines.
What is the property tax rate in Trappes?
Property tax rate on buildings in 2025: 37.26% (municipality and intercommunality), plus a household waste tax of 5.59%. 31% above the department median (28.54%).
Where does Trappes stand in its department?
Among the municipalities of Yvelines, Trappes ranks 95th of 254 for the median house price, 116th of 145 for flat prices, 35th of 259 for the property tax rate, 234th of 245 for the share of homes rated F or G.
How many burglaries in Trappes?
Home burglaries recorded in 2025: 2.1 per 1,000 homes, against 5.7 in the department and 5.6 in France.
Municipalities near Trappes
| Municipality | House, median | Property tax | Distance |
|---|---|---|---|
| Montigny-le-Bretonneux | €4,504/m² | 34.25% | 2.2 km |
| Élancourt | €3,321/m² | 41.8% | 2.6 km |
| La Verrière | €3,713/m² | 32.18% | 4 km |
| Voisins-le-Bretonneux | €4,500/m² | 39.35% | 4 km |
| Bois-d'Arcy | €4,535/m² | 27.01% | 4.1 km |
| Saint-Lambert | - | 20.34% | 4.5 km |
Read more: every municipality in Yvelines, the notary fees calculator, what to check before buying.
Sources: INSEE, DVF, REI, SSMSI, ADEME, DGFiP.
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