Immosearch Immosearch
Sign up

Cancel
KI-Symbolbild: Ein gewölbter alter Ziegelkeller mit Bogengängen, beleuchtet von warmen Wandlampen.
Practical article Buying Austria

Buying a cellar beneath someone else's land: clarifying the offered cellar ownership spatially and legally

How do I check in Austria the acquisition of an independently offered underground cellar when someone else owns the plot of land above it?

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

Published
19 Oct 2026
Research as of
17 Oct 2026
Applies to
Austria
For whom
Searchers & tenants
Article ID
WX26-P04-0034

An old storage or wine cellar is being offered independently of the plot of land above it. Access exists, the rooms are impressive and the price seems manageable. Before you decide on use and fitting-out, however, the object of acquisition must be determined: Is independent cellar ownership being offered or merely a different usage position?

What particularity §300 ABGB describes

§300 ABGB allows, under its conditions, separate ownership of underground rooms and structures on the property of another. The provision names the consent of the property owner and excludes rooms or structures that serve the foundations of above-ground buildings. [KELLEREIGENTUM]

A visible cellar access and the designation “own cellar” therefore do not by themselves prove a suitable legal position. Have the existing register and deed situation assessed. This article does not claim that consent alone completes the acquisition, nor that every underground chamber can be purchased independently.

Lay three levels of examination side by side

Our editorial recommendation is a joint overview that relates the specialists to the same object:

  • Legal object – Specific question: Which underground rooms belong to the offered position?; Required result: Professionally explained allocation based on the decisive documents
  • Accessibility – Specific question: How are the entrance, route and necessary access regulated?; Required result: Access situation tested and suitable for the intended operation
  • Structural connection – Specific question: Which parts adjoin other structures and what is their function?; Required result: Technical assessment to which the legal examination can refer

The table does not grant permission for use. In particular, it prevents a legal scope of space from being assessed without an appropriate technical plan or a walkable area without an appropriate basis for acquisition.

Describe the intended use early

An occasionally used storage cellar and a venue planned for visitors impose different requirements. Therefore state your actual intention. Which public-law and technical prerequisites apply must be checked locally.

Do not derive a current permission for any new purpose from historical use. Ventilation, dampness, access security or supplies are also not properties that a title of ownership alone confirms. For that you need an appropriate technical classification of the specific room and its intended use.

Hypothetical case: The viewing extends beyond the documentation

An interested party views an interconnected cellar complex. However, only part of it is clearly allocated in the documentation offered. He initially wants to use the entire visible area for his storage planning.

Before making a commitment he has the spatial delineation clarified. In addition, it is checked how access to the actually offered part is secured. The example does not decide on ownership of the additional rooms nor on their permissible use. It makes a concrete difference between the extent of the viewing and the extent of acquisition visible.

Only evaluate the clarified position

If you want to acquire the cellar only with a specific access or scope of use, explicitly inform the contract advisory service. Decisive is not the number of vaults viewed, but the spatially comprehensible, legally examined and fit-for-purpose position. Open delimitations belong before the price commitment and not in a later assumption about the neighbours.

Sources and context

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.