Short‑term‑let snapshot (Sep 2026): registration, caps and fines in Berlin, Munich, Hamburg, Cologne and Leipzig — one‑page compliance guide for foreign hosts

Quick legal context (what changed and why you must care)

From 20 May 2026 municipalities began operating under the EU data‑exchange regime for short‑term rentals (Regulation (EU) 2024/1028) and many German cities amended local 'Zweckentfremdungs' rules to require registration numbers, reporting and more active enforcement. Municipal rules still vary on when a stay becomes 'short‑term' and on whether up to 90 days is permitted without a full purpose‑change permit.

For hosts the practical consequences are uniform in one respect: you must either register via the municipality's online procedure (or obtain a municipal permit for more than the local permit‑free threshold), and you must display your local registration/identity number on listings. Failure to observe local rules can trigger administrative fines; several cities expose offenders to fines up to €500,000 in serious cases. ([berlin.de](https://www.berlin.de/sen/wohnen/rechtliches/zweckentfremdungsverbot/))

Berlin — registration delayed but rules tightened; fees and penalties

Berlin enforces the Zweckentfremdungsverbot and updated the law to implement the EU regime; the city's information notes the EU regulation and that the Fourth Amendment to the Zweckentfremdungsverbotsgesetz entered into force on 17 June 2026. Berlin requires registration and display of a registration number once the digital system is active; at the time of publication the city reported the technical rollout was in a test phase and the City was temporarily allowing continued use of existing platform registration numbers until the federal digital procedure issues new numbers. The city also instructs hosts to prepare a BundID or equivalent for the digital application. ([berlin.de](https://www.berlin.de/sen/wohnen/rechtliches/zweckentfremdungsverbot/))

Berlin publishes fixed fees for local permit applications: for temporary renting of a main home the fee is €100 per unit, for a secondary home €150 per unit (policy Q&A). Unauthorised purpose change or repeated short‑term letting can be punished with administrative fines up to €500,000 in serious cases. If you plan to host in Berlin, open the city portal account early and keep copies of all booking records. ([berlin.de](https://www.berlin.de/sen/wohnen/rechtliches/zweckentfremdungsverbot/fragen-und-antworten/?utm_source=openai))

Munich — explicit registration procedure, permit threshold and high fines

Munich's 'Wohnraumzweckentfremdungssatzung' imposes a specific registration procedure for short‑term lets (a §5a on registration refers to Art. 2a ZwEWG and to the EU Regulation). Hosts must register the unit in the city's online procedure before offering it via online platforms; the rule covers both commercial and non‑commercial letting for periods up to six months. The municipality aims to decide on purpose‑change permit applications within three months and the application fee for a purpose‑change (i.e., letting for more than the municipality's permit‑free threshold) carries a minimum charge (published information shows a minimum fee of €500). Unauthorised cases may attract fines up to €500,000. ([stadt.muenchen.de](https://stadt.muenchen.de/rathaus/stadtrecht/vorschrift/970/version2/0.html))

Practical note: if you intend to offer a unit regularly you must use the Munich online registration and place the registration number in every listing. Munich's rules also allow municipal checks of whether a unit remains primarily used for housing when lower‑threshold short‑term letting is claimed. ([stadt.muenchen.de](https://stadt.muenchen.de/rathaus/stadtrecht/vorschrift/970/version2/0.html))

Hamburg — registration, shorter main‑residence exceptions and reporting

Hamburg updated its Wohnraumschutz law and prepared a municipal registration system aligned with the EU regime; official publications record a reduction of the previously wider exceptions for main‑residence letting (eight weeks per year for a main residence was introduced in earlier amendments) and set out rules for municipal identity numbers and platform reporting. The Hamburg legislative documents specify administrative fine provisions and the technical requirement to exchange data with municipalities under the EU regulation. Municipal wording refers to §15 (Bußgeldregelungen) in the local law change documents. ([suche.transparenz.hamburg.de](https://suche.transparenz.hamburg.de/dataset/zweites-gesetz-zur-anderung-des-hamburgischen-wohnraumschutzgesetzes?utm_source=openai))

If you host in Hamburg: check whether the unit is your Hauptwohnung (main residence) — main‑residence exceptions are narrower — register in the city system and check whether platforms you use forward booking data to the municipality. Keep booking records in any case. ([hamburg.de](https://www.hamburg.de/resource/blob/1078560/c57ae0ab0462c52776da68065554f0c6/d-hmbgvbl-nr-21-juni-2025-data.pdf?utm_source=openai))

Cologne — WID (Wohnraum‑Identity), 90‑day rule, reporting and fines

Cologne applies a municipal Wohnraumschutzsatzung and issues a Wohnraum‑Identitätsnummer (WID) for short‑term lets. Short‑term letting up to 90 days per calendar year is possible after prior notification and automated assignment of a WID; students have a special allowance up to 180 days with proof. If you intend to rent for more than 90 days you must apply for a purpose‑change permit. Platforms are required to transmit booking data under the EU framework; if a platform does not transmit, hosts must report each booking at latest by the tenth day after the start of the stay. Cologne's informational pages state fines can reach up to €500,000 for serious breaches. ([stadt-koeln.de](https://www.stadt-koeln.de/artikel/62031/index.html))

Consequence for hosts: register via Cologne's online system, display the WID on listings and do not exceed the 90‑day threshold unless you hold a permit. Keep proof of student status if you intend to use the 180‑day rule. ([stadt-koeln.de](https://www.stadt-koeln.de/artikel/62031/index.html))

Leipzig — no authoritative municipal short‑term‑let summary found within search limit

Within the three‑search limit set for this article I did not find an authoritative Leipzig municipal page that summarises registration thresholds, the municipal permit practice or specific fine amounts equivalent to the other cities above. Because local rules and implementation matter, do not assume Leipzig follows Cologne or Berlin. Contact the Stadt Leipzig — Amt für Wohnungswesen / Ordnungsamt — or instruct a local property manager to confirm the current procedure (registration form, allowed days, and fine schedule) before listing. If you would like, I can run a focused search for Leipzig's municipal text in a follow‑up.

One‑page compliance checklist for foreign hosts (step‑by‑step)

1) Identify whether the unit is Hauptwohnung or Nebenwohnung; rules differ. 2) Before publishing, open the city’s online registration portal and register the unit (Munich, Cologne, Berlin, Hamburg all require registration or a WID/registration number). ([stadt.muenchen.de](https://stadt.muenchen.de/rathaus/stadtrecht/vorschrift/970/version2/0.html))

3) Do not exceed the local permit‑free threshold (commonly 90 days per year; students often have a 180‑day special rule in some cities). If you will exceed it, apply for a Zweckentfremdungsgenehmigung (expect fees and a multi‑week decision period). ([stadt-koeln.de](https://www.stadt-koeln.de/artikel/62031/index.html))

4) Display the municipal registration/identity number on every listing and keep a local record of each stay (platforms will send data under the EU rule, but keep your own logs). 5) Prepare identification for the digital application (BundID / Mein Unternehmenskonto or equivalent where requested). 6) If a municipality notifies you of a suspected breach, respond quickly and seek a local lawyer or professional property manager; heavy fines (up to €500 000) are statutory in multiple cities. ([berlin.de](https://www.berlin.de/sen/wohnen/rechtliches/zweckentfremdungsverbot/))