🏙 Property in Guyancourt: prices, rents, property tax and trends
🏘 Route de Troux — Guyancourt (78280)
5 registered co-ownerships in the national register (RNIC) are attached to Route de Troux in Guyancourt, for a total of 269 units. The 3 sales of flats recorded between 2024 and 2025 work out at a median price of €4,380/m² (+18% compared with the median for Guyancourt, €3,720/m²).
Change in the median price per m² (flats)
| Year | Sales | Median price |
|---|---|---|
| 2024 | 1 | €4,380/m² |
| 2025 | 2 | €4,628/m² |
📋 Profile of Route de Troux
The buildings on Route de Troux in Guyancourt: the most common construction period is after 2011 (40% of the buildings with a known date); individual heating dominates (0% collective heating); only 20% have a lift. The median co-ownership has 47 units (up to 152).
On the management side, 100% of the co-ownerships whose type of managing agent is known (4) are run by a professional managing agent. The most present firm, FONCIA MANSART, runs 2 of these co-ownerships out of the 4 run by a professional managing agent.
On the market, 3 sales were recorded in the street over the period covered, with a median price of €4,380/m² for flats, i.e. 18% above the median for Guyancourt.
Statistics calculated on the co-ownerships of the street for which the information is recorded in the national register (RNIC).
🏛 Professional managing agents on Route de Troux
| Firm | Co-ownerships in the street | Units |
|---|---|---|
| FONCIA MANSART | 2 | 109 |
| GITE IMMO | 1 | 152 |
| COTOIT | 1 | 5 |
Legal entities declared in the national co-ownership register. Volunteer managing agents (individuals) are never named.
🏢 The co-ownerships on Route de Troux
🏷 Latest sales in the street
| Date | Property | Area | Price | €/m² |
|---|---|---|---|---|
| 08/2025 | Flat 3-room | 66 m² | €324,500 | 4,917 |
| 01/2025 | Flat 3-room | 55 m² | €238,563 | 4,338 |
| 05/2024 | Flat 2-room | 46 m² | €201,500 | 4,380 |
Listings in Guyancourt on Leboncoin
Single-property sales (excluding grouped sales), without street numbers. Source: “Demandes de valeurs foncières” © DGFiP / Etalab, Open Licence 2.0. Co-ownerships: national co-ownership register; addresses: Base Adresse Nationale. Syndic Digital is not affiliated with Leboncoin.
📍 Other streets in Guyancourt
❓ Frequently asked questions
How many co-ownerships are there on Route de Troux in Guyancourt?
The national co-ownership register (RNIC) lists 5 co-ownerships attached to Route de Troux in Guyancourt, for a total of 269 units.
What is the price per m² on Route de Troux in Guyancourt?
According to the sales recorded between 2024 and 2025 (3 flats, DVF source), the median price is €4,380/m². Across the municipality, the median is €3,720/m².
Which managing agents run the co-ownerships on Route de Troux in Guyancourt?
Among the co-ownerships run by a professional managing agent, the most present firms are: FONCIA MANSART (2), GITE IMMO (1), COTOIT (1). The full list is on this page.
How can I contact the managing agent of a co-ownership on Route de Troux?
Each listing shows the type of managing agent (professional or volunteer) and lets you contact Syndic Digital, which relays your request.