épülettel
The Hungarian word "épülettel" is the instrumental case of "épület," which translates to "building" in English. As a grammatical case, it signifies that the building is used as a tool, means, or instrument in an action. For instance, one might say "A házakkal harcoltak" which means "They fought with houses" or "They used houses as weapons." This demonstrates how "épülettel" indicates the role of the building in the context of the sentence.
The instrumental case in Hungarian is formed by adding the suffix "-vel" or "-val" to the noun,