Publication · Real Estate Law · October 2026

Condominium ownership or co-ownership – what is the difference?

Mag. Nevena Shotekova-Zöchling – attorney in Vienna

Your co-pilot in real estate law

Mag. Nevena Shotekova-Zöchling

Attorney in Vienna · 16 years of legal practice · Real estate law & purchase contracts

You keep the controls and make the decisions. We sit next to you in the cockpit, know the route and the instruments – and when it gets turbulent, we take over.

Listings often just say “flat for sale”. Legally, however, it makes a big difference whether you acquire condominium ownership (Wohnungseigentum) or merely a co-ownership share in a building.

In short: Condominium ownership is co-ownership plus the exclusive right to use and dispose of a specific flat alone. With plain co-ownership you only own a share of the whole building – which flat you use is governed merely by an agreement, and co-owners may under certain circumstances demand partition of the property.

Condominium ownership (Wohnungseigentum)

Under the Condominium Act (WEG 2002) you acquire a co-ownership share in the property that is inseparably linked to the exclusive right to use and dispose of a specific flat. It is based on a usable-value report and the condominium agreement; the land register records the condominium right with your share.

  • You can sell, let, mortgage and bequeath your flat on your own.
  • Banks finance condominium flats without difficulty.
  • Common parts (staircase, roof, façade) are managed by the owners’ association.

Plain co-ownership (schlichtes Miteigentum)

With plain co-ownership you own an ideal share of the whole building. Who uses which flat follows only from a use agreement between the co-owners.

  • Each co-owner can in principle demand the dissolution of the co-ownership – in the extreme case by court auction of the whole building (partition action).
  • A use agreement should be noted in the land register so that it also binds buyers.
  • Financing and resale are often harder, which is why prices tend to be lower.

Special case: owner partnership

Two natural persons – such as a couple – can jointly acquire condominium ownership of one flat (Eigentümerpartnerschaft). Each holds half and they can generally sell or mortgage their shares only together.

What to check when buying

  • Land register extract: has condominium ownership already been established?
  • New builds or loft conversions: is only a “prospective condominium owner” recorded? Special protective rules then apply.
  • Co-ownership: is a use agreement noted? Has a waiver of partition been agreed?
  • Condominium agreement, usable-value report, reserve fund and minutes of owners’ meetings.

Frequently asked questions

Is every “owned flat” condominium ownership?

No. Colloquially, a co-ownership share in a building is often also called an owned flat. What counts is the land register.

Can co-ownership be converted into condominium ownership?

Yes, if all co-owners cooperate and a usable-value report is prepared. It takes time and money but usually increases the value.

What is a partition action?

It allows a co-owner to demand the dissolution of the co-ownership. If physical division is not possible, the property is auctioned and the proceeds are divided.

Can I get a mortgage for plain co-ownership?

Often only with difficulty or on worse terms, because the bank does not receive a clearly defined unit as security.

Mag. Nevena Shotekova-Zöchling, attorney and insolvency administrator in Vienna. As of October 2026. General information – not legal advice for your individual case.

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