Lose private house if switch GC?

[Mikomune]

So in order to buy my house I had to be a certain rank in my GC first. What I'm wondering is will I lose my house if I switch GC?

[Nicobo]

Sure will not lose it. I bought mine and the house has no any association with the GC. ^^;
It is just the prerequirement to be able to purchase a house.

- Purchasing Land
In order to purchase land, a character must first have attained level 50 in at least one class and also have earned the rank of second lieutenant in one of the Grand Companies.

[Fahad]

yeah, keep in mind that if you switch your GC you will NOT lose your rank in THAT GC. So when you switch back, your rank is still the same.