Tommeira

If your editor can not handle this tool with the current houses.xml, I suggest you remove it. 
 
House Palette -> Houses -> Check and remove or Check and correct 
(Select House and click in "Tile Brush" - Pressing the "Control Button" in your keyboard, redraw the marcations. You can simply remove the houses, the marcations must desappear)
 
 
Green: Your rat
Blue: Other house
Almost Blue: House selected