Just wanted to report that if you're near the door in the initial start of the game (maybe you stayed there after the Vault Tec guy or maybe you anticipate the evacuation by getting close to the door) it doesn't open and you can't get out of the house. The only fix is to restore from an earlier save.

You'd think you could just answer the door but apparently they don't want you going outside till the right time so there's no grab point on the door.