I just made my Lakeview house for the first time and on the back porch (storage wing) the door is glitched.

The door flickers as if the textures aren't sync'd together right.

I can't even go into the house from there but I can come from the inside to the outside just fine.

Anyone else have this problem?

Nope, I suppose you should probably post your platform and if on the PC system specs and load order.