The trees don’t actually overhang the house. But yes to answer your question. It matters unless it’s a crown fire. It’s distance away from the house, in my case 30-50 feet. The CZU fire 10 miles away from me was a ground fire to a certain extent but obviously burned up in areas where ladder fuels had accumulated in the understory. Take away that ability to climb and the fire meanders around on the ground. That’s the point of the defensible space. It also matters what kind of roof you have and that’s a specific piece unto itself. For sure density plays a part too. They want to thin the trees to have min of 10 ft between canopy reach. On steeper hillsides, that’s not always a good idea for water runoff purposes so you have to weigh all 4 seasons when you prepare.