It isn't his, rather his adoptive family's house. (Just imagine it to be less modern.)

Welcome mat:

Living room from the upstairs:

Living room from the upstairs again:

Living room from a different angle (imagine it being more like the previous pictures):

Here are other stairs in a different part of the house:

Eric, Farlan, and Erwin's room (it is like this but on the other side of the room there's another bed):

Scott, Wynn, Perry, and Terry's room:

Kuchel, Isabel, and Angel's room (Angel sleeps in a toddler bed in there; when she's older another bed gets put in):

Their bunk beds are like this:

Levi and Lissa's room:

Danielle and Adeline's room (they belong to SpamChan):

Kitchen (imagine that it's designed to fit the theme of the rest of the house though):

The attic:

The library:

Kids' bathroom:

Adults' bathroom: