German tenancy law is codified in the Bürgerliches Gesetzbuch (BGB), the federal civil code, and it leans firmly toward tenants. Its core provisions are mandatory: a lease clause that undercuts a tenant’s statutory protections is void even when both parties signed it. In a country where roughly half the population rents, the framework treats housing stability as close to a right, and it shapes every stage of a tenancy from signing through a potential eviction.
Which Type of Lease You Have
The default is the unlimited-term contract (unbefristeter Mietvertrag). It runs indefinitely with no renewal process, and the tenant can stay as long as they pay rent and honor the lease. Most renters sign this, and the BGB assumes it.
Fixed-term contracts (befristeter Mietvertrag) are tightly restricted under BGB § 575. A landlord may impose a time limit only for one of three reasons: they plan to use the unit for themselves or close family, they intend major construction that would be significantly harder with a tenant in place, or they need the unit as tied housing for an employee. The reason must be stated in writing when the contract is signed. Skip that step or cite an invalid reason, and the time limit is void; the lease automatically becomes unlimited.1dejure.org. Bürgerliches Gesetzbuch 575 – Zeitmietvertrag
A written lease should identify all tenants by name, describe the rented space precisely (including any cellar or garage), state the rent and how operating costs are handled, and give the start date. Verbal agreements are legally valid, but they default to the BGB’s standard rules, which generally favor the tenant. Landlords almost always insist on writing anyway.
Who Pays the Broker
Since June 2015, the Bestellerprinzip (the “orderer principle”) decides who pays the broker: whoever hires the agent pays the commission. If the landlord engages an agent to find a tenant, the landlord pays. That fee cannot be passed to the tenant. If you hire a broker yourself to help you search, you owe the fee. Before signing anything with a rental agent, confirm in writing who commissioned the search and who owes the commission.
Rent Limits When You Sign
The Mietpreisbremse (rent brake) caps starting rents in designated tight-market areas. In those zones, the rent at the start of a new tenancy cannot exceed the local comparative rent (ortsübliche Vergleichsmiete) by more than 10%. State governments decide which municipalities qualify and must justify the designation with data on rising rents, high tenant cost burden, or low vacancy. The rent brake was originally set to expire in 2025 but has been extended through the end of 2029.2dejure.org. Bürgerliches Gesetzbuch 556d – Zulässige Miethöhe bei Mietbeginn
The comparative rent is typically drawn from the Mietspiegel, a data-driven index reflecting rents for comparable apartments based on location, size, age, and amenities. A qualified Mietspiegel (qualifizierter Mietspiegel) must be adapted to the market every two years and rebuilt from scratch every four.3Gesetze im Internet. Bürgerliches Gesetzbuch 558d – Qualifizierter Mietspiegel
When the Rent Brake Does Not Apply
Three exceptions let landlords charge above the 10% cap:
- New construction: apartments first occupied after October 1, 2014, are exempt.
- Comprehensive modernization: after extensive renovation, the rent brake does not apply to the first lease that follows.
- Pre-existing higher rent: if the previous tenant was already paying more than the Mietspiegel plus 10%, the landlord can keep that higher rate.
In cities with a lot of new or recently renovated stock, these carve-outs make the cap less protective than it sounds. Check whether your specific unit qualifies before assuming it applies.
Rent Increases During the Tenancy
Once you are living in the apartment, the landlord cannot raise rent freely. The Kappungsgrenze limits increases to 20% over any rolling three-year period.4Gesetze im Internet. Bürgerliches Gesetzbuch 557b – Indexmiete In municipalities that state governments have designated as tight housing markets, that cap drops to 15%. Hundreds of cities currently operate under the lower threshold. Any increase requires a written justification, typically citing the Mietspiegel, and the tenant must consent or the landlord must go to court.
Index-Linked and Graduated Rent
Two alternative structures sidestep the standard process. An Indexmiete ties rent to the national consumer price index published by the Federal Statistical Office. The agreement must be in writing, and rent moves only when the index moves.4Gesetze im Internet. Bürgerliches Gesetzbuch 557b – Indexmiete
A Staffelmiete locks in specific future rent amounts at signing. Each step must be stated as a euro amount, and rent must stay unchanged for at least one year between increases.5Gesetze im Internet. Bürgerliches Gesetzbuch 557a – Staffelmiete While a Staffelmiete runs, the landlord cannot pursue additional increases under the standard Mietspiegel rules.
Modernization Surcharges
When a landlord carries out qualifying modernization work, such as improving energy efficiency or accessibility, BGB § 559 allows them to pass 8% of the costs attributable to the apartment onto the tenant as an annual rent increase. The resulting increase is capped at €3 per square meter within any six-year period, or €2 per square meter if the rent before modernization was below €7 per square meter. These caps prevent modernization from becoming a route to unlimited hikes, but the increases are permanent and can still be significant in large apartments.
Deposits and Operating Cost Statements
The security deposit (Kaution) is capped at three months of net cold rent, so utility prepayments are excluded from the calculation. Tenants have the right to pay in three equal monthly installments, with the first due at the start of the tenancy. The landlord must hold the deposit in a separate, interest-bearing account, insulated from personal assets. That insolvency protection matters: if the landlord goes bankrupt, the deposit does not become part of the bankruptcy estate. Interest earned belongs to the tenant.
After the tenancy ends, the landlord may retain the deposit for a reasonable period to settle outstanding utility bills or damage claims. In practice, retention typically runs up to six months, though no fixed statutory deadline exists.
Operating costs (Betriebskosten) are billed separately from base rent and cover a defined list of expense categories in the Betriebskostenverordnung: property tax, water and sewage, heating, waste collection, chimney sweeping, building insurance, stairwell cleaning, and grounds maintenance, among others.6Bundesministerium der Justiz. Betriebskostenverordnung – Verordnung über die Aufstellung von Betriebskosten Tenants usually pay a monthly estimate, and the landlord reconciles the actual amount in an annual statement (Betriebskostenabrechnung).
The deadline for that statement is twelve months after the end of the billing period. If the landlord misses it, they forfeit the right to demand any additional payment for that year, though the tenant can still claim a refund if they overpaid.6Bundesministerium der Justiz. Betriebskostenverordnung – Verordnung über die Aufstellung von Betriebskosten The deadline is hard.
Repairs and Maintenance
Under BGB § 535, the landlord must provide the apartment in a condition suitable for its intended use and keep it that way for the whole tenancy.7United States Army. German Landlord-Tenant Law That covers structural elements like the roof, exterior walls, windows, and central heating, plus plumbing and electrical systems. When something breaks through normal use or aging, the bill falls on the landlord unless the tenant caused the damage.
Cosmetic Repairs
Cosmetic repairs (Schönheitsreparaturen), mainly painting walls and ceilings, are a perennial source of disputes. Many leases shift these costs to the tenant, but the Bundesgerichtshof has struck down several common versions. Clauses that impose rigid timelines, such as requiring repainting every three to five years regardless of actual condition, are invalid.8Mieterverein Köln e.V. Tips for Moving – Section: When to Renovate? A valid clause can only trigger cosmetic work when it is actually needed based on visible wear.
There is an added wrinkle. If you received the apartment unrenovated or already worn, a clause requiring you to perform cosmetic repairs at the end of your tenancy is void unless the landlord provided adequate compensation, such as a rent reduction. You should not have to leave the apartment in better condition than you found it.
Small Repairs
Small repairs (Kleinreparaturen) cover fixtures the tenant handles often: faucets, light switches, door handles, window latches. A lease clause can make the tenant responsible, but only with a clear per-repair cap and an annual limit. Based on accumulated court decisions, the accepted per-repair maximum currently sits between roughly €100 and €150. If a single repair exceeds the cap, the entire cost reverts to the landlord, not just the overage. Without a valid small-repair clause, the tenant owes nothing for these fixes.
Reducing Rent When Something Is Broken
When a defect meaningfully limits the use of the apartment, the rent is automatically reduced by operation of law under BGB § 536. You do not need the landlord’s permission or a court order. Common qualifying defects include heating failure, persistent mold, water damage, broken windows, severe construction noise, and malfunctioning plumbing. The reduction runs from the moment the landlord receives notice of the problem until the defect is fixed.
How much to reduce is the harder question. There is no official statutory table. Courts decide percentages case by case, and published Mietminderung tables compile past rulings as rough guidance. A complete heating failure in winter has justified reductions of 50% or more in various decisions, while a dripping faucet typically justifies nothing.
Three situations disqualify you: you knew about the defect when you signed the lease, you caused it, or it is so minor it does not genuinely affect your use of the apartment. Document the defect thoroughly, notify the landlord in writing immediately, and state that you consider the rent reduced. Reducing rent without first notifying the landlord is the fastest way to turn a valid claim into rent arrears.
Subletting
If circumstances change after you sign, BGB § 553 gives you the right to ask the landlord’s permission to sublet part of the apartment. The statute covers partial subletting, not handing the whole unit to someone else.
The landlord must grant permission if you show a legitimate interest, unless one of three exceptions applies: a serious concern about the proposed subtenant personally, overcrowding, or another specific reason that makes the arrangement unreasonable for the landlord. If permission is granted, the landlord can condition it on a reasonable rent increase to reflect added wear. Any lease clause that strips subletting rights entirely is void. If the landlord refuses without a valid reason, the tenant can terminate the lease on standard notice and, in some cases, claim damages.
Ending the Lease
Termination requires a physical letter with a handwritten signature. Email, text, and even fax do not satisfy the written-form requirement. The letter must reach the other party, not just be sent.
Tenants can terminate for any reason with a flat three-month notice period, regardless of how long they have lived in the apartment. The notice must reach the landlord by the third business day of a calendar month for that month to count as the first of the three. Miss that deadline by even a day, and termination shifts back by a full month.
When the Landlord Can Terminate
Landlords face a much higher bar. They cannot terminate an unlimited lease without demonstrating a “legitimate interest” under BGB § 573. The most common ground is Eigenbedarf, where the landlord needs the unit for themselves or close family. A significant breach of contract by the tenant, such as persistent disturbance of neighbors or unauthorized alterations, also qualifies.
Landlord notice periods scale with the length of the tenancy:9U.S. Army Garrison Rheinland-Pfalz. German Landlord-Tenant Law
- Up to 5 years of tenancy: 3 months’ notice.
- 5 to 8 years: 6 months’ notice.
- More than 8 years: 9 months’ notice.
The termination letter must state the specific reasons. A vague or generic notice is invalid, because the tenant needs enough information to evaluate whether the grounds are legally sufficient and decide whether to contest.
The Social Clause
Even a properly justified termination can be blocked by the social clause (Sozialklausel) under BGB § 574. A tenant may object if eviction would cause hardship that outweighs the landlord’s interest in recovering the property.10United States Army. German Landlord-Tenant Law – Section: Tenant’s Right to Protest Courts weigh advanced age, pregnancy, serious illness, children enrolled in local schools, and the realistic availability of comparable housing in the area. The clause does not create an absolute right to stay, but it can delay or prevent eviction when the tenant’s situation is genuinely precarious.
Immediate Termination for Rent Arrears
BGB § 543 allows either party to terminate immediately, without notice, for serious cause. For landlords, the usual trigger is rent arrears. Immediate termination is permitted if the tenant is behind for two consecutive months, or if the total arrears at any point reach an amount equal to two months’ rent.11U.S. Army Garrison Wiesbaden. Government Shutdown Information and German Housing Rental Agreements
There is a narrow escape hatch. If the tenant pays all outstanding rent within two months of an eviction lawsuit being filed, the extraordinary termination becomes void. But landlords typically issue both an extraordinary termination and an ordinary termination in the same letter. The ordinary termination for breach of contract under BGB § 573 survives even if the tenant pays the arrears in time, because the breach has already occurred. Falling behind on rent, even temporarily, can start a chain of events that ends the tenancy regardless of whether you catch up.
Eviction Runs Through the Courts
Self-help evictions are not allowed. A landlord cannot change the locks, remove belongings, or cut off utilities. The only path to removing a tenant who refuses to leave is a court order.
The landlord files an eviction lawsuit (Räumungsklage) at the local court (Amtsgericht) where the property sits, paying court costs upfront. Straightforward cases with clear rent arrears and no defense might resolve in four to six months. Cases with a hardship defense or an appeal can stretch beyond a year. If the court rules in the landlord’s favor and the tenant still does not leave, the landlord must engage a court bailiff (Gerichtsvollzieher), who must give the tenant at least three weeks’ advance notice before the physical eviction.
From filing through enforcement, the process can easily cost the landlord several thousand euros in court fees, attorney fees, and bailiff costs, plus the lost rent during the proceedings.
Where to Get Help
Two resources are worth knowing about. A Mieterverein (tenant association) offers legal advice, review of utility statements, and help communicating with landlords, typically for an annual membership fee of roughly €100 to €200 depending on the city. Some associations include legal protection insurance that covers court costs, though coverage often begins only after a waiting period of around three months after joining. Services vary between local associations, so check what is included before signing up.
Private legal insurance (Rechtsschutzversicherung) with a tenancy law module is the other common option. These policies cover attorney and court fees for rental disputes, but virtually all impose a waiting period, and they typically exclude disputes that were already foreseeable when the policy started. Buying insurance after a conflict has begun will not help. The time to get coverage is when things are calm.