With the help of the Leventis Family, the construction of Thirteen's new home was completed in less than a month.
The only reason why it took longer than it should've been was because of Thirteen's blueprint.
He had requested the Builders to use specific materials on some parts of the home, which he would use to help him channel Rune Magic later on.
Instead of drawing the symbols on the house himself, Thirteen commissioned Painters and other artists to paint, sculpt, and build these symbols, making it look as if they were works of art.
The house had three floors and five underground floors.
The special metals that were used on the underground levels were very hard and tough, which could easily tank the full-powered blow of Rank 6 Jinns and Majins.
Thirteen could have used sturdier materials, but they would have been too expensive, despite the fact that they had millions in their savings account.