Konstancin-Jeziorna Property Prices, Rents & Rental Yields

About Konstancin-Jeziorna

Konstancin-Jeziorna sits just south of Warsaw and is known for its villa character, green setting, and spa-town heritage. For house investors, that combination keeps the city distinct within Mazowieckie voivodeship while tying it closely to the capital’s wider residential market.

September 2026 brings the clearest signal: prices have softened month to month even as annual gains remain intact. The average sale price for houses stands at 3,300,000 zł, after a 5.6% monthly decline, while the average price per square metre is 12,470 zł, down 6.0%. That pullback suggests a short-term reset rather than a structural break.

The investment picture still shows a meaningful tension. Average rent is 19,900 zł, which is up 10.6% year over year and only down 0.5% from the previous month, so income has held up better than sale pricing. As a result, the yield sits at 5.23%, a level that reflects solid gross income relative to current valuation, but also one that sits within a market where recent price movements have improved entry points more than cash flow.