“Solomon brought Pharaoh’s daughter up from the city of David to the house that he had built for her, for he said, ‘My wife shall not live in the house of David king of Israel, for the places to which the ark of the Lord has come are holy’.” (2 Chron. 8:11)
Solomon has just completed building the temple of the Lord, dedicating it with joy and prayer (chp. 7). He begins a period of wider building once the temple and his house are build. He takes cities from rival people, builds walls and gates, establishes fortified supply cities throughout, and places the men of Israel in key leadership positions (8:1-10). He offers burnt offerings, observes the special feasts commanded in the Law, and organizes temple worship in keeping with David’s commands, finishing all the work before him (8:12-18).
But in the middle of all this accomplishment, verse 11 sticks out like a giant aching thumb. The king has an Egyptian wife; he has married outside of Israel. Apparently, he recognizes something of the inconsistency. He decides that an unholy wife shouldn’t live in the places made holy by the ark’s presence.
(House of Pharaoh's Daughter - King Solomon's wife or Queen - King Solomon's Citadel)