Castro-Urdiales Property Prices, Rents & Rental Yields

About Castro-Urdiales

Castro-Urdiales combines a Cantabrian coastline setting with a historic town centre, harbour views and easy access to the wider Bay of Biscay corridor. For apartment investors, it stands out as a place where coastal lifestyle and everyday urban convenience meet.

September 2026 brings the clearest signal in rents: the average apartment rent has eased to €900, down 10.0% month on month. That pullback comes even as the annual trend remains firmer, with rents up 12.5% year on year, suggesting that short-term softening sits within a longer recovery pattern rather than a broad reversal.

On the sales side, the picture is steadier. The average apartment sale price holds at €285,000, unchanged from the previous month and only 0.7% below last year. Meanwhile, the average price per square metre is €3,170, up 19.2% year on year and flat month on month. The result is a tighter investment equation: valuation levels have held, but rental income has not moved in step this month. That leaves the current yield at 4.15%, a useful benchmark for anyone weighing income potential against the stronger annual rise in pricing.