Konstancin-Jeziorna Property Prices, Rents & Rental Yields

About Konstancin-Jeziorna

Konstancin-Jeziorna stands out in Mazowieckie as a green, villa-oriented suburb south of Warsaw, known for its spa-town character, established residential streets and strong appeal for larger homes. Its setting gives the local housing market a distinct premium feel compared with many nearby locations.

June 2026 brought the clearest signal yet: house values are still rising, but the price momentum is now testing investor economics. The average sale price reached zł3,500,000, after a 6.2% month-over-month increase and a 17.1% gain year over year. The average price per square metre climbed to zł12,868, up 2.3% on the month and 11.9% on the year, reinforcing the upward trend in capital values.

That strength has not been matched by rent growth. The average monthly rent stands at zł18,700, which is 10.7% higher than in May but still 6.0% below last year’s level. As a result, the current yield of 5.17% suggests a market where pricing power on the sales side is outpacing income growth. For investors tracking Konstancin-Jeziorna, the June picture is straightforward: ownership costs are moving higher faster than rental returns, tightening the spread even as the housing market continues to reprice upward.