Solution to Moving Buildings

I have a row of buildings that all abut each other in a line. I want to move them all back one step, which works for the first one but after that, none of them will go b/cthey insist that now they overlap. I only move them in one direction so they aren't moving sideways at all. So now all my buildings are zigzag on my streets.

And frequently they just bounce around wherever they want or won't move at all...?