Challenge Modernization Surcharge — Your Rights During Renovation
Create a professional letter against an unjustified modernization surcharge. The AI checks the legal requirements and drafts your objection under German Civil Code (BGB).
Important Tips
- The landlord must announce the modernization in writing at least 3 months before it begins — including type, scope, start, expected duration, and anticipated rent increase (Section 555c BGB)
- A maximum of 8% of the apartment's share of modernization costs may be passed on annually (Section 559(1) BGB) — maintenance portions must be deducted
- Rent cap: Rent may not increase by more than 3 EUR/sqm through modernization within 6 years (for rents below 7 EUR/sqm: max 2 EUR/sqm) — Section 559(3a) BGB
- Upon receiving a modernization notice, you have a special termination right effective at the end of the month following receipt (Section 555e BGB)
Notice Period
The modernization notice must be received at least 3 months before work begins (Section 555c(1) BGB). You can object due to personal hardship by the end of the month following receipt (Section 555d(3) BGB). The special termination right applies at the end of the second month after receipt (Section 555e BGB).
How It Works
Describe
Describe in plain language what you want to write.
AI Creates Your Letter
Our AI generates a professional letter in DIN 5008 format.
Sign & Receive
Sign digitally and receive the finished PDF by email.
Frequently Asked Questions
What is the difference between modernization and maintenance?
Modernization sustainably improves the property (e.g. energy renovation, elevator installation, accessibility) and justifies a rent increase under Section 559 BGB. Maintenance merely preserves the existing condition (e.g. repairing a broken heater, replacing windows with the same quality) and may not be passed on to the tenant. In practice, many measures involve both — the maintenance portion must be deducted.
Can I refuse a modernization?
Generally, tenants must tolerate a properly announced modernization (Section 555d(1) BGB). However, you can object due to personal hardship (Section 555d(2) BGB), e.g. if the modernization leads to an unreasonable rent increase, health limitations exist, or relocating during construction is not reasonable.
How is the rent increase after modernization calculated?
The landlord may pass on 8% of the apartment's share of modernization costs annually (Section 559(1) BGB). Maintenance portions must be deducted. The increase may not exceed 3 EUR/sqm in total within 6 years (Section 559(3a) BGB). For rents below 7 EUR/sqm, the cap is 2 EUR/sqm. For the simplified procedure for smaller modernizations (up to 10,000 EUR/apartment), 30% is deducted as a flat maintenance rate (Section 559c BGB).
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