"Improperly Placed" Question

[Tomarke]

I placed a Keep back in December. Someone owned an 18x18 behind it which fell just a couple of weeks ago and I decided to move my 18x18 storage house so that it occupied the recently vacated spot.

I just noticed that my Keep is now "improperly placed". I have never owned an improperly placed house before so I had some questions. Doing some reading it looks like being improperly placed doesn't really affect anything unless I try to demolish and replace the Keep in future, in which case it wouldn't work (possibly for resizing but I can think of no other reason).

Are there any other drawbacks to being improperly placed?

Why would placing a legal house behind another cause one of them to be considered improperly placed? Shouldn't the placement rules keep this from happening?

 

[Kayhynn]

No drawbacks other than if it falls you may not be able to replace it there.

 

[Angel of Sonoma]

What Kayhynn said, no big deal unless you try to re-place the keep. You can always re-customize the stairs of your 18x18 and it will probably make the keep 'properly placed' again. Make sure you have 5 tiles between the keep and 18x18 stairs.