The translation of the polite phrase is "Mi casa es su casa."
house = casa
'in-house' - interior, interno/a
el casa = a house
"hen house" translates to, "gallinero" in Spanish.
en la casa del mayordomo is the spanish for at the butler's house
old house = casa vieja.
A beautiful house in Spanish is "Una casa hermosa".
casa nueva
Casa blanca
en mi casa
Casa abierta
Avah huis