If trees that need to be cleared would light up when placing a building, this would probably limit the trees that are removed, preserving a “garden” or forest look to the town. Make it so that you can place the building but not construct it before the trees are cleared.
#Clearly highlight which trees have to be removed/chopped when placing a blueprint
potent crow
rotund pivot
Or Pre-Mark the ground in the "footprint" of the building when removable objects are in the way (trees, decorations and whatnot). Then place the building automatically like it would have normally when the space has been cleared
chrome gust
A workaround for now is to use photomode while blueprint is active to check which trees are affected. 🙂 (This suggestion would of course be faster if implemented.)