Residential unit (bytová jednotka)

What it means

When you buy a flat in Czechia as personal property, what you legally acquire is a residential unit (bytová jednotka). The Civil Code (občanský zákoník) defines a unit as a flat that is a spatially separate part of the building plus a share in the common parts of the property. Your purchase therefore covers more than the rooms behind your front door: you also become a part-owner of the roof, staircase, facade, risers and usually the land under the building.

This is the key difference from a cooperative flat (družstevní byt). There the building belongs to a housing cooperative and you hold a membership share that comes with the right to rent the flat. A unit, by contrast, is owned directly, and your name appears in the land register (katastr nemovitostí).

How it works in the Czech Republic

A building is split into units by a document called the owner's declaration (prohlášení vlastníka), which lists the units and the share in the common parts that belongs to each. Every unit then has its own number in the land register, typically the building number, a slash and the unit number, and appears on a title deed (list vlastnictví) together with its share.

On a purchase, ownership passes when the transfer is entered in the land register. The entry takes legal effect from the moment the application for registration (návrh na vklad) reached the cadastral office, although the approval itself comes later. Until then the register shows that the rights to the unit are affected by a pending change.

Common parts are managed by an owners' association (společenství vlastníků jednotek, SVJ). The law requires one in a building with at least five units, at least four of which belong to four different owners. Smaller buildings can organise management without an SVJ.