Energy performance and credit assessment

Short answer #

German banks reported net tighter housing-loan standards in Q2 2026 and greater restrictiveness for low energy performance. This is context, not an individual credit decision.

Important variables #

• Price, rent and holding period
• Rate, principal and remaining balance
• Buying, maintenance and selling cost
• Appreciation and alternative return

Worked example #

The +7% net share measures bank survey responses. It must not be entered as a rate premium or rejection probability.

Break-even: What changes the result? #

Test the main driver as a cautious, central and optimistic range. Also check whether the ranking reverses at a crossover or remains robust across the range.

Common mistakes #

• Comparing mortgage payment directly with rent
• Omitting transaction cost or remaining debt
• Treating appreciation as guaranteed

Sources & assumptions

• Deutsche Bundesbank — Bank Lending Survey Germany, July 2026 (2026-08-17)
• RATIOXA — Methodology and formulas (2026-08-17)