German sublease agreement for a room

This German sublease agreement lets you rent out a room in your flat (Untermietvertrag); it also shows which notice period applies to your case and by when a notice must arrive.

Independent site, not a law firm: a standard template, like a book of legal forms, not legal advice.

Main tenant
Subtenant
Room and rent
Place and date

Example: furnished room, €450 all-in, main tenant lives in — change any figure to see your own result

End of the sublet if notice arrives that day

30 November 2026

Received by the 15th → end of that month (s. 573c(3) BGB)

Deadline this month15 November 2026
After that: deadline15 December 2026
… and end31 December 2026
Deposit, at most€1,350

Go to the finished document

A standard template, like a book of legal forms: no review of your individual case and no legal advice. What you type stays in your browser.

How the check works and its sources

A tenant who sublets a room becomes a landlord himself: the German sublease agreement (Untermietvertrag) binds only the main tenant and the subtenant, and the owner is not a party. The owner must still consent. Without permission, subletting is not allowed under section 540 BGB; section 553 BGB gives the tenant a right to consent for part of the flat if a legitimate interest arises after the lease was signed, such as a partner moving out or a year abroad. The notice period depends on whether the main tenant lives in the flat and furnished the room. If both are true, the short rule applies: a notice that arrives on 10 March 2027 ends the sublet on 31 March 2027. If the room is let empty, three months apply as for a flat, and the same notice only takes effect on 30 June 2027. The template picks the right section for you and prints the agreement in German.

Empty fields print as a line to fill in by hand. The document is in German, as the other party expects.

Untermietvertrag über ein Zimmer

Zwischen ____________________________, ____________________________, __________________ (Hauptmieter)

und ____________________________, ____________________________, __________________ (Untermieter)

wird folgender Untermietvertrag geschlossen:

§ 1 Mietsache

Der Hauptmieter überlässt dem Untermieter in der von ihm gemieteten Wohnung ____________________________, __________________ das Zimmer zur Straße (rund 16 m²) möbliert, mit der Einrichtung laut Anlage zur alleinigen Nutzung. Küche, Bad und Flur darf der Untermieter mitbenutzen.

§ 2 Erlaubnis

Der Hauptmieter versichert, dass die Erlaubnis des Vermieters zur Untervermietung schriftlich vorliegt (§ 540 BGB).

Der Untermieter weiß, dass er das Zimmer bei Ende des Hauptmietverhältnisses auch an den Vermieter herausgeben muss (§ 546 Abs. 2 BGB).

§ 3 Mietzeit und Kündigung

Das Untermietverhältnis beginnt am 14. November 2026 und läuft auf unbestimmte Zeit.

Da das Zimmer Teil der vom Hauptmieter selbst bewohnten Wohnung ist und von ihm überwiegend eingerichtet wurde, kann jede Seite spätestens am 15. eines Monats zum Ablauf dieses Monats kündigen (§ 549 Abs. 2 Nr. 2, § 573c Abs. 3 BGB).

Die Kündigung bedarf der schriftlichen Form.

§ 4 Miete

Die Miete beträgt monatlich 450,00 € einschließlich aller Nebenkosten (Heizung, Wasser, Strom, Müll). Sie ist monatlich im Voraus, spätestens bis zum dritten Werktag, an den Hauptmieter zu zahlen.

§ 5 Kaution

Der Untermieter leistet eine Kaution von 900,00 €, zahlbar in bis zu drei gleichen monatlichen Raten. Sie wird nach Rückgabe des Zimmers und Abrechnung offener Forderungen zurückgezahlt.

§ 6 Zusammenleben

Der Untermieter erhält einen Wohnungs- und einen Zimmerschlüssel. Besuch ist erlaubt; die Aufnahme weiterer Personen auf Dauer bedarf der Zustimmung des Hauptmieters. Die Hausordnung des Vermieters gilt auch für den Untermieter.

__________________, den 14. November 2026

Hauptmieter

Untermieter

Checked by Radif Partners · Editorial policy · Method and sources

What a German sublease agreement should contain

The template has six short clauses: the room and the shared areas, the landlord’s consent, term and notice, an all-in rent covering heating, water and electricity, a deposit in up to three instalments, and house rules. With an all-in rent there is no yearly service-charge statement between you and the subtenant. Labels are in English; the agreement prints in German, which is what a landlord or a court will read.

Example from the calculator, state of Berlin
CaseNotice arrivesSublet ends
furnished, main tenant lives there10 March 202731 March 2027
empty, or main tenant lives elsewhere10 March 202730 June 2027

Choosing the right notice period

The short period in section 573c(3) BGB applies only if both conditions are met: the room is part of the flat the main tenant lives in, and he furnished it mostly with his own furniture. If either is missing, the subtenant has the full protection of a tenant, and a notice from the main tenant needs a legitimate reason. If you move out and hand over the whole flat, that is no longer a room sublet and this template is not enough.

Deposit and payment day follow the rules for housing (section 551 BGB). If the flat is a real flatshare with equal members, the flatshare room agreement fits better; your own lease with the landlord is not affected.

Frequently asked questions

Tap a question to see the answer.

Do I need my landlord’s permission to sublet a room in Germany?

Yes. Section 540 BGB allows a tenant to let the flat or part of it to a third party only with the landlord’s permission. For part of the flat, such as one room, section 553 BGB gives a right to that permission when a legitimate interest arose after the lease was signed. Subletting without permission can lead to a formal warning and, if repeated, to termination.

What notice period applies to a subtenant?

If the main tenant lives in the flat and mostly furnished the room, either side may give notice by the 15th of a month to the end of that month, and the subtenant has no protection against eviction (section 549(2) no. 2 BGB). Otherwise section 573c(1) BGB applies: received by the third working day, ending after the month after next. For a letter arriving on 10 March 2027 that means 30 June 2027.

What happens to the subtenant when the main lease ends?

When the main tenancy ends, the owner can claim the room back from the subtenant too, under section 546(2) BGB, even if the sublease is still running. The subtenant then only has claims against the main tenant. The template says so in the agreement itself so that nobody is caught out.

Related templates

Sources

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Rules as of 2026, read on