Here is what I do. I put an axe in my backpack plus deco tool and a new paver .Keep the backpack open. Then I go to the trashbarrel in the house and smash it. After that I let my char fall trough the hole and type " I wish to place a trash barrel" Now the character is standing under the hole in the barrel. I open the barrel clicking it ..or the ctrl+shift clicking the trash barrelbar if you cant see the barrel. Place the paver in the barrel, axe the barrel and use ctrl+shift to target the paver with the deco tool and raise it max. Use recall or "leave house option and go upstairs and continue to raise the tile from above. If you have not clicked or dragged other tiles only the important one shoud show when you ctrl shift the area.
Lynx explanation below is simpler , mine is for when you cant see the exaxt tile, or move to the side so you can place on it. Thats where my pavers use to fall