Isometric tile place building

Hi,
How in isometric tile map place building using scripts?
I want the building to be placed to move on the tiles no free move.

What isometric view has to do with the tiled map?
You deal with your map as is 2D. Unless you need height as well.
While camera can look at such map from different angles, top, down, left etc.
You may be interested in raycast, to pinpoint coordinates, where mouse, or pointer is pointing at.
Specifically, at which tail, or object.