[TheCommonNoob]

This is a strange bug where my home had been almost wiped out save for some random furniture.
I can move around normally as if on floor with no walls where they should be.
I can't enter the other floors or I'll be sent to the dev room.
This occurred at 4:00 P.M EST on the 22nd of June. 

I've heard it has happened before and I hope this provides some insight.
Down below is more info and the turn of events that happened exactly.

Key: SomeEvilBastard.slot3

Logged onto my character character
Checked my house ticket status for any current houses
Found my current house (Oniga)
Went and moved out (did not enter the house)
Found and moved into a new house (Alstalsia)
(Spend some time building at an alt's house)
Entered my house and figure out it had been voided
Took note of the many missing furniture pieces and three missing floors (fun-o-gram, housekeeper, custom battlefield and two extra floors remained)
Tried to enter a new floor to check if it had retained anything
Immediately got sent to dev room instead and stuck for a moment
Got saved by someone on the event staff
Waited for reboot to come around to check the house again
Find the house is still voided after reboot with the same things missing

[Neus]

Apparently whatever caused it happened on the 16th. Thank you for all the detailed information. I didn't figure out what caused it, but I have restored the file; let me know if everything is correct.