Past Participles as Adjectives
Past participles (often starting with ge-) can function as adjectives. When placed before a noun, they describe something that has already happened to that noun (e.g., gebaut = built, geplant = planned) and take standard adjective endings.
The Extended Attribute "Sandwich"
German lets you pack extra descriptive information directly in front of a noun.
While English usually puts this information after the noun ("The complex recently completed"), German wedges it strictly between the article and the noun. The participle anchors the end of this descriptive block:
Article + [Extra Info + Past Participle] + Noun
| The recently completed complex has a modern facade. | Der kürzlich fertiggestellte Komplex hat eine moderne Fassade. |
Prepositional Phrases
This "sandwich" structure easily holds prepositional phrases. When talking about architecture, you can describe materials (aus Beton) or the people responsible (vom Investor) right inside the attribute block.
| The construction built out of concrete and steel is huge. | Die aus Beton und Stahl gebaute Konstruktion ist riesig. |
| The building financed by the investor is very tall. | Das vom Investor finanzierte Gebäude ist sehr hoch. |
Adjective Endings and Cases
No matter how much information is stuffed between the article and the noun, the participle acts as the final adjective. It must take the correct ending for the noun's case, gender, and number.
| The floor built of steel and concrete has a lot of area. | Das aus Stahl und Beton gebaute Stockwerk hat viel Fläche. |
If the noun's role in the sentence changes—for example, acting as a direct object—the entire extended phrase moves together as one grammatical unit.
| Which investor bought the recently completed building? | Welcher Investor hat das kürzlich fertiggestellte Gebäude gekauft? |