Q: We are about to start building a new house, is there any duas or sunnat acts that we can do or read for khair while building and to make the building go smoothly, for us to pay off our building etc.
A: There are no special or Sunnah acts for this. Adhaan can be given in the four corners of the house (facing Qiblah) when moving in. Surah Baqarah can be recited for protection.
Allah Ta’aala knows best.
Moulana Yusuf Laher