€12.6 Billion in Flood Damage – Every 10th Home Affected

What used to be a rare event is now becoming the new normal: heavy rain events are increasing in Germany – and across Europe.

Over the past 20 years, the damage totalled €12.6 billion, with every tenth residential building affected. Sealed surfaces, overwhelmed drainage systems, and missing buffers are part of the problem.

What does this mean for property owners?

Climate change brings new demands for real estate. Thinking ahead means protecting your property – and preserving its long-term value.

The Solution: Sponge City Principles

Cities must act like a sponge: absorb, store, and release water. In practice, this means:

• Green roofs
• Permeable surfaces & bioswales
• Restored rivers and wetland zones
• Rainwater tanks and cisterns
• Water-friendly paving solutions

Our tip from the WuZL office:

Climate adaptation starts at home. We offer holistic advice – from green roofing to intelligent water management.

More info: wohnenumzuleben.de

Key in the Mailbox – and Suddenly the Claim Expires?

It sounds simple: The tenant drops the key into the landlord’s mailbox. Done. But legally, this action can have big consequences.

Background

If a tenant unilaterally returns the key – even without the landlord’s consent or formal termination – it may be considered a change in possession. According to a recent court ruling, this can trigger the limitation period for damage claims.

Why this matters

Once possession is legally considered returned, the landlord has a limited time to claim compensation for damages. If that time runs out – the claim expires.

What landlords should do

• Document all handovers in writing
• Do not accept informal key returns unnoticed
• Regularly inspect inventory – especially in furnished rentals or vacation homes

Whether it’s a damaged sofa or missing keys: legal certainty begins with proper handover. One key in the mailbox can start the clock ticking.