The Marriage Contract
Scholars have said that if one dreams of what was previously mentioned (like building in the air) and they have entered into a marriage contract or consummated their marriage, they might be in a precarious situation with their spouse or feel insecure in their marital relationship.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.