Thanks for posting your question. The information Drew provided is correct. We do protect all players properties indefinitely. We only relocate structures in very specific situations. We can not remove his house as it has been there since 9-3-2014, which means he was there first. If he logged in and complained, we would actually need to relocate your structure.
We are able to relocate structures for a fee of 5 Famcoins per block, however, since it looks like you were unable to see his house with the way/place it was, I will be happy to relocate your home/area at no charge so you will have space to expand, if you like.
I would just need coordinates of the location you would like the structure moved to (you can type /coords to get the coordinates) and you would need this info:
"When requesting a WorldEdit relocation of a structure containing chests, please prepare by removing ALL written books, player skulls, and enchanted books and items, including donor items from your chests. You also need to remove ALL items in TRAPPEDchest. Please collect ALL displayed item frames as well. These items WILL NOT move properly in a WE"
Thank you again for posting to ask about this.