at one's door

at one's door или at one's doorstep  {adv. phr.}

1. Очень близко; совсем рядом с местом, где вы живете или работаете.

Johnny is very lucky because there's a swimming pool right at his doorstep.

Mr. Green can get to work in only a few minutes because the subway is at his door.

2. См.: LAY AT ONE'S DOOR.