There are even "Invisible Objects" that will block house placement. I tried to resize my house the hard way (before the placement changes). I filled my bankboxes and toons with as much items as i could and let a couple of things fall to the ground while i tried to resize. I couldn't even put the same house back there and it turned into a nightmare trying. In the panic that followed
i ended up placing a smaller house and locking my stuff back down before anyone noticed.
http://www.uo.com/fof/fiveonfriday113.html
WARNING: House Resizing
There is a known issue with house resizing at the moment - if you have items in a moving crate and resize your house, the moving crate goes "poof!" with all the items in it. We will have a fix for this in the next publish, but in the meantime, make sure you've emptied your moving crate!
Also, something to keep in mind -
your ability to place your house will be dependant on the *current* house placement rules. It's possible that some older houses were placed under a less-restrictive set of rules, and if the house is demolished, the original square footage (tileage?) will no longer be available according to the current rules. A buffer zone is required of five tiles north and south, and one tile east and west. Be careful!
Just a thought about that "lost house in luna thread"(chessy) ... mmmmm nope, just checked, pretty large placement in place ~~11x14 ...
Shame we got no further info on "whuat huppened" ... tool use ... blockage ... campfires ... *sigh*
but, then again ...
some of those moongate houses ...allowed, disallowed, allowed but "no more" ...
just saying ...someone is BOUND to try and resize one of them ... eh?