Boulogne-Billancourt Property Prices, Rents & Rental Yields

About Boulogne-Billancourt

Boulogne-Billancourt, on the western edge of Paris in the Hauts-de-Seine department, combines a dense urban setting with a long-standing residential appeal. Its apartment market sits within one of the capital’s most established inner-ring locations, where pricing and rental trends can shift quickly from month to month.

July 2026 brings the clearest signal in rents, with the average apartment rent rising 4.5% over the month to €1,570. That increase extends the stronger annual trend, with rents up 8.1% year on year, and it keeps income potential moving faster than sale values. For investors, that creates a noticeable tension: the rental line is improving, while pricing is still adjusting.

On the sales side, the average apartment price held at €599,000 in July 2026, but the broader pricing picture remains softer than a year ago. The average price per square metre stands at €9,080, down 0.6% month on month and 3.6% year on year. That combination suggests a market where asset values have eased, even as rents continue to climb, helping the current yield reach 4.46%. In practical terms, Boulogne-Billancourt is presenting a more balanced entry point for apartment investors than a year ago, but with tighter economics than the rental growth alone might imply.