Structurally changed, renovated, or adapted for a new purpose. Usually refers to buildings, apartments, or rooms.
example
Die alte Fabrik wurde zu modernen Loft-Wohnungen umgebaut.
The old factory was converted into modern loft apartments.
Usage tips
Word structure
'Umgebaut' (converted/modified) is the past participle of the separable verb 'umbauen' (to convert/remodel). The prefix 'um-' indicates a change or redesign, while 'bauen' (to build) describes the basic action.
EXAMPLE
Die Familie baut gerade ihr Haus um.
The family is currently remodeling their house.
Use as an adjective
As a past participle, 'umgebaut' (converted/modified) is very often used like an adjective. It can stand before a noun or describe a state with the verb 'sein' (to be).
EXAMPLE
Wir wohnen in einem frisch umgebauten Bauernhaus.
We live in a freshly converted farmhouse.
Sentence structure with 'zu'
The underlying verb 'umbauen' (to convert/remodel) is often used in the structure 'etwas zu etwas umbauen' (to convert something into something) to describe the result of the change. The adjective 'umgebaut' (converted/modified) is the result of this action.
EXAMPLE
Der Architekt hat das alte Büro zu einer hellen Praxis umgebaut.
The architect converted the old office into a bright medical practice.
Context clue
You can tell whether it is a structural or technical change from the noun. If 'umgebaut' (converted/modified) refers to buildings, rooms, or furniture, the structural meaning is meant. With vehicles or machines, it refers to technical modification.
EXAMPLE
Die umgebaute Wohnung hat jetzt ein offenes Wohnzimmer.
The converted apartment now has an open living room.
Compare with
antonym
umgebaut vs unverändert
unchanged
'unverändert' and 'umgebaut' both describe the state after a possible change. 'unverändert' means that everything has remained the same. 'umgebaut' means that something has been changed structurally or technically, for example a room, a house, a car, or a machine. 'unverändert' is more general and can fit many things. 'umgebaut' is used especially when the form, use, or technology of something has been changed.
umgebaut
Die Kundin sieht sofort, dass die Küche komplett umgebaut ist.
The customer immediately sees that the kitchen has been completely remodeled.
unverändert
Im alten Büro ist nach dem Umzug alles unverändert geblieben.
In the old office, everything remained unchanged after the move.