From Longman Dictionary of Contemporary Englishset up houseset up houseto start to live in a house, especially with another personThe two of them set up house in Brighton. →house
Examples from the Corpus
set up house• They first set up housetogether in Atlanta and moved to Miami three years later.• He rarely left the Brooklyn apartment where he had set up house.• He had even established a system for sending money home to their families once they had set up house in this country.• And he set up house for her in a bungalowfurther along the river, in a nice secluded part.• Her parents were very upset when she set up house with her boyfriend.• The two new Mr and Mrs Kim-Soons set up house next door.• They set up house in No. 93, which was now to let.• I have to save enough money to set up house.• Diana and I were soon to set up house in Shepherd's Bush and our fortunes were inextricable for the next decade.