If you’re thinking about buying property in Germany, you may be wondering why mortgage rates have suddenly become more expensive. The short answer is that the war in Iran is already rippling through financial markets – and Germany’s property sector is feeling the effects.
The conflict has pushed up global energy prices with consequences that reach beyond the petrol station forecourt. Higher energy costs are fuelling fears of rising inflation, and inflation influences interest rates, which in turn are the single most important factor for property buyers who rely on mortgages.
Why mortgage rates are rising
German mortgage rates are closely linked to the yields on ten‑year German government bonds, which act as a benchmark for home loans. Since the US and Israel attacked Iran in late February, those bond yields have risen by around 0.3 percentage points and reached their highest level since 2023, according to a report by Wirtschaftswoche.
As a result, around 30 percent of mortgage lenders in Germany have already raised their rates since the start of the war, including major banks such as ING, which increased rates by 0.3 percentage points across all loan terms.
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This means that borrowing has become more expensive. For a typical property costing €500,000 with a 90 percent loan‑to‑value ratio, the effective interest rate for a ten‑year mortgage is currently just over four percent.
For a mortgage of €250,000, this reportedly translates into roughly €6,500 in additional interest costs over ten years.
What this means for buyers
For buyers, even small interest rate increases can make a big difference. Property purchases usually involve loans of several hundred thousand euros, so higher rates quickly add thousands of euros to total costs.
According to mortgage broker Interhyp, an increase from 3.6 to 3.8 percent on an average loan of €340,000 already means around €600 more per year in interest payments.
Buyers with little equity are particularly affected. Interhyp notes that people financing a large share of the purchase price are now more likely to face mortgage rates starting with a four, while buyers with higher equity can still sometimes secure lower rates.
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Cooling demand and construction risks
Rising borrowing costs are already having an impact on the wider market. Demand for construction loans has weakened again after a brief recovery, as higher interest rates make projects less attractive.
Experts quoted in the Frankfurter Rundschau are also warning that if inflation pressure continues, the European Central Bank may feel forced to raise its key interest rate, which could further slow housing construction.
Economists point to historical parallels. Max Herbst, founder of Frankfurt-based FMH-Finanzberatung, compares the current situation to 2022. Then, Russia’s war in Ukraine sent energy prices and mortgage rates soaring, causing many buyers to abandon plans to build or buy property and abruptly ending the real‑estate boom.
Higher costs beyond financing
The impact is not limited to mortgages. Higher fuel and energy prices also increase construction costs directly. Diesel accounts for around 40 percent of energy consumption in the construction sector, meaning that rising fuel prices quickly feed into higher building costs, according to the German Construction Industry Association.
At the same time, higher energy bills reduce household purchasing power, leaving less financial room to save for deposits or service mortgages.
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