When it comes to finding synonyms for the phrase "take occupancy," there are a variety of options to choose from. One possibility is "move in," which carries a similar sense of settling into a new living space. Another option is "assume tenancy," which emphasizes the legal and contractual aspects of renting or owning a property. "Begin residence" is another possible synonym, which connotes a sense of starting a new chapter in one's life. Other choices might include "settle in," "establish domicile," or "inhabit." Ultimately, the best synonym will depend on the context and tone of the overall message being conveyed.