Rental Law Blog

Practical tips and legal basics for tenants in Germany

BGH-Urteil

BGH Ruling: Switch to Commercial Heat Delivery — Tenants Pay Only Baseline Costs

BGH VIII ZR 46/25 + 47/25: When switching from individual heating to commercial contracting, § 556c BGB does not apply — tenants need not bear contractor surcharges.

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Untervermietung

Subletting in Germany: When Must the Landlord Agree? (BGH 2026)

BGH VIII ZR 228/23: Profitable subletting forbidden. § 540 vs § 553 BGB, surcharge rules, and when the landlord must agree.

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BGH-Urteil

BGH Ruling: Unauthorized Renovation Does Not Automatically Justify Termination

BGH VIII ZR 274/23: Tenant renovated bathroom and kitchen without permission — termination still invalid. What this ruling means for tenants.

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Mietpreisbremse

Rent Brake (Mietpreisbremse) 2026: Does It Apply? Calculator, Complaint & Refund

Mietpreisbremse explained: where it applies (800+ cities), how to calculate max rent, file a complaint, and reclaim overpaid rent.

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Heizung

Heating Broken in Winter: 100 % Rent Reduction + Emergency Steps

Heating down? Landlord must act within 3–4 days. Rent reduction up to 100 %, self-remedy rights, and termination without notice.

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Privatsphäre

Landlord Entered Without Permission: Is It Trespassing?

Landlord used spare key? When entry is allowed (only 5 cases), trespassing charges, and your right to change the locks.

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Auszug

Apartment Handover Checklist: Prevent Unfair Deductions (+ Protocol)

Handover checklist, what counts as "normal wear and tear", 3 common landlord tricks, and why a protocol protects your deposit.

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Mieterhöhung

Rent Increase 2026: Cap Limits, Rent Brake & How to Object

Got a rent increase? Cap limit (20 %), rent brake, 3 deadlines landlords must meet — and when you can legally refuse.

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Schimmel

Mold in Your Apartment: Who Is Liable + Up to 100 % Rent Reduction

Landlord or tenant at fault? Burden of proof, reduction rates (20–100 %), defect notice, and when immediate termination is possible.

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Kündigung

Lease Termination: Notice Periods, 3 Common Errors & Objection

Notice periods (3–9 months), 3 formal errors that invalidate a termination, and how the hardship objection under § 574 BGB works.

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Kündigung

Fight Eigenbedarf Termination: 4 Reasons It May Be Invalid

Received an Eigenbedarf notice? 4 common formal errors, hardship objection (§ 574 BGB), and when you don't have to move out.

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Renovierung

Cosmetic Repairs When Moving Out: When the Clause Is Invalid

German Federal Court: rigid deadline clauses are void. Which renovation clauses are invalid and when you owe nothing at move-out.

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Lärm

Noisy Neighbors: Quiet Hours, Noise Log & Up to 50 % Rent Reduction

Quiet hours (10 PM–6 AM), how to keep a noise log, when rent reduction applies, and what your landlord must do.

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Mietminderung

Rent Reduction in Germany 2026: Table, Court Rulings & Template

Rent reduction table with 30+ defects and exact percentages. Incl. court rulings, calculation example, and free template letter.

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Kaution

Get Your Deposit Back: 6-Month Deadline, Interest & Template

Landlord not returning your deposit? Deadlines (max 6 months), allowed deductions, interest claims, and a free template letter.

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Nebenkosten

Check Your Utility Bill: 5 Common Errors + How to Object

Every 2nd utility bill contains errors. The 5 most common mistakes, a review checklist, and the 12-month objection deadline.

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Important Notice: MieterHelfer provides general information about German rental law. This does not constitute legal advice and does not replace consultation with a lawyer. For individual legal questions, please consult a specialist lawyer for rental law.