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KI-Symbolbild: Auf einem Ziegeldach mit Solarmodulen steht ein kleiner Mobilfunkmast, daneben ein Wohnhaus unter klarem blauem Himmel.
Practical article Buying Germany

A third party uses the roof or facade on the house you are buying: Understanding third-party use before giving consent

How do I check a German house purchase if roof or facade areas are already being used by another company.

Automatically translated – the German version is legally binding. Show original (German)

Published
19 Oct 2026
Applies to
Germany
For whom
Searchers & tenants
Article ID
WX26-P04-0082

During the viewing you notice an advertising installation or another facility on the building that is operated by a third party. The sales page refers to regular income. For your purchase decision you also need the associated rules of use, obligations and effects on any work you will carry out on the building.

This article is an editorial preparatory aid. It does not assert an automatic transfer of any specific usage contract nor any general right of termination. The concrete contract, any registered rights and the purchase structuring must be examined by a specialist.

Connect installation, area and contracting parties

Request the complete relevant documents and a description of the area actually used. Who owns the installation, which areas are claimed and how does the user side obtain access? A visible installation and a single payment into the account do not explain the full scope of use.

Keep your own observations and documented agreement separate. A larger actually used area may prompt a targeted query. By itself it does not yet prove a contractual breach. The legal classification belongs in the review of the full basis.

Consider income only together with counter-performance

What payment is made for which period and what tasks accompany it? Ask about promised access, maintenance, possible costs and the handling of damage. The article does not set a customary remuneration or return.

Distinguish confirmed payments from the expectation that the contract will be continued unchanged. Even an operation that is trouble-free today is not a guarantee that your later roof work will be possible without coordination. Your own perspective on the building belongs in the review from the outset.

Hypothetical case: roof renovation and third-party installation coincide

A buyer wants to repair the roof shortly after acquisition. The sales page simultaneously advertises a third-party operated installation as an additional income. The buyer has not yet clarified what accesses, removal or coordination obligations are associated with the installation.

He therefore has the usage contract and his planned construction schedule examined together. For a possible temporary removal, responsibilities and costs are clarified on the basis of the documents. The example does not promise a unilateral removal option and does not decide any compensation claim.

Have your future role expressly determined

Discuss with the contract advisory which position you should obtain after the purchase and which declarations or further prerequisites are necessary for the intended transfer. A general sentence that the income will belong to you in future should not be treated as a complete contract takeover.

If you do not wish to continue the third-party use, have this wish checked for its actual feasibility before giving your consent. Do not at the same time expect the immediate end of use and permanently unchanged income from it.

Your decision outcome links spatial use, financial performance and your own plans. That way you can assess the offer price under the clarified conditions. The third-party used area is considered as an ongoing relationship and not merely as an additional amount in the exposé.

Sources and context

Keine externen Tatsachen als recherchiert ausgegeben. Eigenständig entwickelte redaktionelle Empfehlung mit ausdrücklich fiktivem Beispiel; rechtliche, technische und wirtschaftliche Objektfragen bleiben Prüfaufgaben.

Abläufe und Beispiele sind eigene redaktionelle Empfehlungen; alle beschriebenen Personen und Fälle sind fiktiv. Quellen liefern ausschließlich zugeordnete Fakten, keine übernommenen fremden Artikeltexte oder Fotos.

Created with the help of AI and editorially reviewed. General guidance only; not individual legal, tax or financial advice. Errors and later changes are possible.