"I went to his house" in Spanish is "Fui a su casa". It is pronounced "Fwee ah sue KA-sah". Please see the Related link below for confirmation of the translation.
house = casa
Fui allí.
(Yo) fui a....
'in-house' - interior, interno/a
el casa = a house
"hen house" translates to, "gallinero" in Spanish.
Fuiste a ver....
en la casa del mayordomo is the spanish for at the butler's house
old house = casa vieja.
adonde fuiste ayer
Fui a la universidad.
Me fui a la cama.