Price of a 4-room apartment (T4) in Guyancourt
In Guyancourt, the median price of a T4 is €3,508/sq.m, i.e. about €291,164 for an average area of 83 sq.m. Data from actual DVF transactions by the DGFiP (37 sales over the 12 months ending 31 December 2025).
Price range (T4)
What DVF sales say about the price of a T4 in Guyancourt
The 37 T4 sales recorded over 12 months weigh about 19% of the 197 apartment and house sales in the town. Guyancourt measures 6 property types, and the T4 comes 5th on price per sq.m, 3rd on sales volume over 12 months. The average area of the T4 sold, 83 sq.m, is about 25% larger than that of the apartments sold in the town, 67 sq.m. At €3,508/sq.m, the median price lands in the lower third of the town's apartment range, 1st to 3rd quartile. Compared with the neighbouring towns tracked by Briveo where this property type is measured, Versailles comes out at €6,429/sq.m, about 83% above, and Rambouillet at €3,217/sq.m, about 8% below. Across all the town's apartments, whatever their number of rooms, the median price per sq.m has moved -0.3% over one year, based on DVF sales published by the DGFiP.
Observed sale prices of a T4 in Guyancourt
Of the sales of a T4 à Guyancourt, half closed between 258,250 € and 323,037 €, for a median price of 289,250 €.
Half of the T4 sold measure between 77 and 85 sq.m.
Three years of sales
| Year | Sales | Median per sq.m |
|---|---|---|
| 2023 | 44 | €3,716/sq.m |
| 2024 | 25 | €3,402/sq.m |
| 2025 | 37 | €3,489/sq.m |
Between 2023 and 2025, the median price per sq.m of a T4 went from 3,716 € to 3,489 €, −6.1 %.
Source and method
- Property transfer records (DVF), published by the French tax authority (DGFiP)
- Sales recorded from 1 January 2023 to 31 December 2025
- Based on 37 sales
- Figures computed on 31 October 2026
The town
Guyancourt covers 13 km², lies between 110 and 167 m above sea level and had 29,778 inhabitants in the 2023 census.
Guyancourt (pronounced [gɥi.jɑ̃.kuʁ]) is a French commune situated in the département of Yvelines in the Île-de-France region, 20 km south-west of Paris. It forms part of the communauté d'agglomération de Saint-Quentin-en-Yvelines. The site of the commune was already inhabited in the Neolithic period, according to remains such as arrows, flint scrapers and polished axes, found at Bouviers, Troux and Villaroy.
The full property page of the town
From Wikidata and the Wikipedia article « Guyancourt », licensed CC BY-SA 4.0, read on 13 October 2026. Translated from the French article. Read the article
Other property types in Guyancourt
Price of a T4 in nearby cities
Cities tracked by BRIVEO in the same department, median for the same property type when available.
Frequently asked questions, T4 in Guyancourt
Q1What is the price of a T4 in Guyancourt in 2026?
In Guyancourt, the median price of a T4 is €3,508/sq.m, with a range of €3,210 to €3,956/sq.m (1st to 3rd quartile), based on DVF sales published by the DGFiP.
Q2What budget for a T4 of 83 sq.m in Guyancourt?
For the average observed area (83 sq.m), the indicative budget goes from about €266,430 (1st quartile) to €328,348 (3rd quartile), around €291,164 at the median price. Indicative calculation, DVF price per sq.m multiplied by the area, excluding notary fees.
Q3How does the price of a T4 compare with apartments in Guyancourt?
The median price of a T4 in Guyancourt is about 8% below the city's apartment median (€3,809/sq.m), based on DVF sales published by the DGFiP.
Q4How many T4 sales in Guyancourt?
The DGFiP DVF database records 37 sales of this type in Guyancourt over the last 12 months.