Tenant rights in Hamburg: rent index, rent cap and where to get help

The rent index shows the local comparative rent (ortsübliche Vergleichsmiete) for non-subsidised flats, by size, age, location and equipment. Hamburg has published a qualified rent index every two years since 1976.

The current Mietenspiegel 2025 was presented on 9 December 2025, with the reference date 1 April 2025. Its mean net cold rent is €9.94 per m², up 1.12% from 2023; for the first time it is based on the median, which reduces the influence of extreme values. About 47,450 flats were contacted for the survey. It covers flats without public subsidy whose rent was newly agreed or changed in the previous six years.

To use it, look up your street section in the residential location directory (Wohnlagenverzeichnis) to see how its location is rated, then read the range for your type of flat from the table. The city also offers an online calculator and an interactive map on its rent index page.

The rent cap applies in all of Hamburg. The Senate renewed it from 1 January 2026 until 31 December 2029 because the housing market remains strained. For a new lease, the rent may generally be no more than 10% above the local comparative rent.

Exceptions:

• flats first used and let after 1 October 2014;
• the first letting after comprehensive modernisation;
• if the previous tenant already paid more, the landlord may ask for up to that previous rent (reductions or increases in the last year before the previous tenancy ended do not count);
• modernisation in the three years before the lease began can justify a higher rent.

A landlord who wants to rely on an exception must tell you before you sign; otherwise they can only ask for the permitted rent.

How to claim: complain to the landlord in writing (Rüge) that the rent is too high. For leases since 1 April 2020, if you complain within 30 months of the start of the lease, you can reclaim all overpaid rent from the beginning; later complaints only work from the date of the complaint. If the landlord does not agree, the claim goes to the civil courts, so get advice first.

A landlord can ask you to agree to a rent increase up to the local comparative rent, with conditions set by federal law (section 558 Civil Code):

• the rent must have been unchanged for at least 15 months when the increase takes effect, and a request can come at the earliest one year after the last increase;
• within three years, the rent may not rise by more than 20%, or 15% in areas with a strained market designated by the state.

Hamburg applies the 15% limit in the whole city, under an ordinance valid from 1 September 2023 to 31 August 2028. Increases after modernisation and changes in service-charge advance payments follow separate rules. Check every rent increase against the rent index before you agree; tenants' associations can help.

Most leases require monthly advance payments for service charges (Betriebskosten), such as water, waste collection, building cleaning and heating. Once a year the landlord must send a statement (Betriebskostenabrechnung):

• at the latest 12 months after the end of the billing period; after that the landlord can usually no longer claim back payments;
• you can object to errors until 12 months after receiving the statement (section 556 Civil Code).

Ask to see the receipts if something looks wrong.

• Deposit: at most three months' net cold rent, payable in three monthly instalments; the landlord must keep it in a separate savings account (section 551 Civil Code).
• Your notice period: give written notice by the third working day of a month to leave at the end of the month after next (section 573c Civil Code). The landlord's notice periods are longer and grow after five and eight years.
• Moving out: document the handover with photos and meter readings; see the guide to moving out and getting your deposit back.

• Mieterverein zu Hamburg (Beim Strohhause 20): legal advice for members, membership €7.50 a month including legal expenses insurance (2026); insurance cover starts after three months.
• Mieter helfen Mietern (Bartelsstraße 30): another tenants' association with advice centres in the city.
• ÖRA, the public legal advice service (Dammtorstraße 14 and district offices): low-cost legal advice for people with low income and assets who live in Hamburg, at most €15 per matter (2026), by appointment only; it also offers conciliation as an alternative to court.
• Verbraucherzentrale Hamburg: consumer advice, including energy costs.

Legal advice on individual cases is generally only available to members of a tenants' association or through lawyers and public advice services.