Balcony Access!

[Myon88]

The reason it's a fake door now is probably because the inside of your house is technically a different 'zone' from the yard and the rest of the housing ward.

Basically it's not possible for you to seamlessly walk between your house and the balcony unless,

1. They put the balcony in the same 'inside' zone as your house and show you a fake garden and housing ward view. If you're standing there on the inside, someone out on your yard won't see you - and vice versa.
2. They put a portal there like your front door, using it teleports you outside onto the balcony.

#2 is probably the most likely solution since #1 is kind of silly. But it's just not possible to access it from the inside without a zone change, unless they totally change the way housing wards work.