One of the very important things a person should do after becoming a homeowner is celebrate a Chanukas Habayis. He should show gratitude and appreciation for the great favor which Hashem has bestowed upon him in giving him the wonderful opportunity to become a homeowner. There is a Bracha which is recited when purchasing a new home. The bracha is Hatov V'Hametiv [Hatov V'Hametiv], (this is generally so, as one is usually not the sole benefactor of a home purchase, as he also has a wife and family, who benefit from it.If he is the sole benefactor, he should say the Bracha of Shecheyanu).
I was personally told by Rav Chaim Kanievsky Shlita, in the name of his Father, the steipler Gaon ZTL, that those who become homeowners and do not celebrate chanukas Habayis, to show praise and gratitude to Hashem for their new home, are considered "Kfuyey tovah", guilty of denying the good that was done for them!