take possession (of something)
To gain or assume ownership or custody of something. She took possession of the house following the court's ruling that she was the legal inheritor of the estate. The bank took possession of my car after I was unable to keep up my monthly repayments.
take possession (of something)
to assume ownership of something. I am to take possession of the house as soon as we sign the papers.
take posˈsession (of something)
(formal) become the owner of something: He couldn’t pay his taxes, so the government took possession of his property.