as if you own the place

as if (one) owns the place

In a supremely confident way. The phrase sometimes indicates that the speaker is annoyed by such confidence. Ugh, the boss's son always walks through the office as if he owns the place. I want you to walk into that interview as if you own the place—no false modesty.
See also: if, own, place
Farlex Dictionary of Idioms.

as if you own the place

in an overbearing or self-important manner. informal
See also: if, own, place
Farlex Partner Idioms Dictionary
See also:
  • as if (one) owns the place
  • as if someone owns the place
  • if you would be well served, serve yourself
  • a lot, not much, etc. in the way of something
  • Blame Canada!
  • can't stand
  • can't stand (someone or something)
  • can't stomach (someone)
  • be on (one's) back
  • be on someone's back