Questions & Answers about Дом, который я вижу из окна, старый.
In Russian, который is the standard relative pronoun for clauses like “the house that I see…”.
- который declines (changes form) for gender, number, and case, and it agrees with the noun it refers to: here it refers to дом (masculine, singular).
- что can introduce some kinds of clauses, but typically:
- after words like всё, то, то, что: То, что ты сказал, важно.
- in some more colloquial structures.
For a normal relative clause directly after a noun (the house that I see), который is the correct and neutral choice:
Дом, который я вижу из окна, старый.