Berlin Preservation Areas: What Landlords Need to Know About the New Administrative Regulations

Chronology

Update: 10 Sep 2026

The Berlin Administrative Court heard a landlord's lawsuit against a prohibition order for furnished temporary housing in a Milieuschutzgebiet (social preservation area) (VG 19 K 95/26, Bezirksamt Neukölln) and largely dismissed the lawsuit. In the view of the responsible chamber, the specific rental model examined constitutes a change of use requiring approval under Section 172 of the German Building Code (BauGB).

This decision applies only to this one case and has no general binding effect on other proceedings. Other courts are not bound by it. The court has granted leave to appeal. We expect the case to continue.

Our legal position, supported by the GSK Stockmann opinion, remains unchanged: housing remains housing. In this case, the court sided with the opposing view and found a change of use. We are preparing test cases with our specialized lawyers before the Berlin Administrative Court to bring about judicial clarity.

For now, nothing changes for landlords on our platform because of this ruling.

What Is Happening?

On April 18, 2026, the "Administrative Regulation on Approval Criteria in Social Preservation Areas" came into force in Berlin, following its publication on April 17, 2026. Since then, many landlords renting furnished, mid-term apartments in preservation areas (Milieuschutzgebiete) have reached out to us with concerns.

In this post, we aim to do three things:

• Present the legal situation as it stands, including the Senate Department's position, even where we believe it lacks a sound legal basis.
• Clearly state our own legal stance and disclose the specific grounds on which it is based.
• Detail the support Wunderflats has in place for affected landlords, ensuring you do not have to navigate this uncertainty alone.

The regulation instructs Berlin's district authorities on how to decide on permits under Section 172 BauGB. Essentially, it classifies furnished mid-term rentals in these areas as a "change of use" requiring a permit. You can verify if your property is affected via the Berlin Geoportal. If your property is outside these 82 areas, this regulation does not apply to you.

Understanding the Legal Status of an "Administrative Regulation"

An administrative regulation is an internal directive from a government department to its subordinate agencies. It is not a law and does not constitute a legal act with direct external effect on citizens or companies. Only the underlying law, in this case, § 172 BauGB, is legally binding. Courts are not bound by these regulations; they evaluate the application of the law independently.

However, this does not mean the regulation is without consequence. District authorities will apply it. Until a court rules otherwise, official administrative practice will follow these instructions.

Two Legal Perspectives: And Why They Matter to You

The central question is whether the furnished, mid-term rental of an apartment constitutes a "change of use" under § 172 BauGB that requires a permit. There are currently two opposing positions.

1. The Senate's Position

The Senate Department argues in the regulation that mid-term furnished rentals qualify as a change of use and are generally subject to permit requirements in preservation areas. Their argument is that the economic use of an apartment through short-term, furnished contracts differs structurally from "classic" residential use and promotes displacement, the very process § 172 BauGB is meant to prevent.

2. Our Legal Position: Housing Remains Housing

Supported by a legal opinion from GSK Stockmann (Prof. Dr. Ulrich Battis), our assessment is that the Senate's interpretation contradicts long-standing case law. An apartment used for residential purposes does not change its "type of use" under § 29 BauGB simply because the tenancy is fixed-term or furnished.

Established courts differentiate a change of use based on whether the new use falls into a different planning category or requires different planning standards. Neither applies to mid-term residential tenancies. The GSK opinion concludes that applying this regulation to fixed-term residential tenancies cannot be reconciled with current law and established judicial practice.

What This Means for You

We believe the application of this regulation will be overturned in court. While the final determination of illegality rests with the judiciary, our stance is clear. Nevertheless, until a court rules, the regulation remains a factor in administrative practice: districts will use it, and individual landlords may face hearings or prohibition orders in the coming months. This is exactly where our support begins.

Our Support Package for Landlords

If you receive a letter from your district office, we are here to help. We have put together a free support package for affected landlords: a step-by-step guide for handling district office letters, the full GSK Stockmann legal opinion for submission to the district office, a template response letter and referrals to specialized Berlin law firms that are already fully briefed on the topic.

All details and next steps: Support Package for Landlords in Berlin Preservation Areas.

To request the package, write to milieuschutz@wunderflats.com.

Our Legal and Political Actions

Coordinated Test Cases

Together with specialized procedural lawyers, we are preparing test cases to have the regulation's application to mid-term rentals judicially reviewed. Our goal is a swift progression through the courts.

• If you are interested in participating as a test case, email us at support@wunderflats.com with the subject line "Musterverfahren".
• We internally select cases based on specific criteria (e.g., standard residential properties with no structural changes). In selected cases, we will cover 100% of the legal and court fees.

Political Advocacy

We are engaging with members of the Berlin House of Representatives and addressing this overreach of authority at the federal level. This is not just a legal issue: Berlin depends on high-quality, flexible housing for international specialists, researchers, and people in transition. Data from the ifo Institute and Prognos AG confirm this market's importance to Berlin's economy. You can find these gathered studies and facts at wunderflats.com/lp/en/temporary-housing-facts. Regulation that captures this market indiscriminately harms the entire city of Berlin.

Our Interim Recommendations

While every case is unique, we advise the following based on the current situation:

• No Immediate Action Required: As long as you have not received an individual notice, you have no duty to act. The regulation applies to districts, not directly to you. Taking listings offline or applying for a permit unprompted does not improve your legal position.
• Consult Before Responding: If you receive mail from the district, do not reply independently. Every written statement becomes part of the legal record. Contact us at milieuschutz@wunderflats.com or a lawyer first.
• Protecting Liability Claims: Generally, if you do not challenge a notice in time, you may lose the right to claim damages against the State of Berlin, even if the notice is later found illegal. A timely objection is essential for securing future claims.