Boulogne-sur-Mer Property Prices, Rents & Rental Yields

About Boulogne-sur-Mer

Boulogne-sur-Mer is a historic Channel port where the old town, working harbour and seafront sit close together. Its mix of maritime heritage and everyday city life gives the apartment market a distinctive coastal identity that remains closely tied to the rhythm of the local economy.

August 2026 points to a market where prices are still moving ahead, even as rental gains remain more restrained. The average apartment sale price now stands at €146,750, after rising 1.1% over the month and 12.5% over the year, while the average price per square metre has climbed to €2,040, up 6.0% month on month and 7.8% year on year.

That price momentum is important because rents are not matching it. The average apartment rent is €580, unchanged year on year, although it has increased 4.5% since last month. Against that backdrop, the gross yield of 6.09% suggests investment returns are still present, but they are being squeezed by the faster rise in purchase values than in rental income.

For investors watching Boulogne-sur-Mer this month, the main tension is clear: capital values continue to firm, yet rental growth is only beginning to catch up. In practical terms, August 2026 is less about broad repricing than about a market in which the cost of entry is rising faster than the income stream, especially for apartments.