Excellent little puzzle game.
Meant to be played in fullscreen, it seems. UI elements were a little too small in the browser window. Sound design, both the ambient stuff like the wind and the building sounds were great. Matches the art style for peak comfy. I played through the rocks level and intend to come back to play the rest.
Only problem I had was deselecting options. Wasn't a huge issue, but I like being able to have no option selected. It was possible by pressing the corresponding key ("T" to deselect house, etc) but not by clicking the appropriate button, which would have been nice.
Not sure if you're intending to add music, but that might enhance the atmosphere further.
Overall, great work.