It really does not matter whether you are cooking with a charcoal grill or gas grill. It is necessary to keep the grill away from your house for charcoal grill safety. If we talk about the distance, make sure the grill is at least 10 feet away from the house. Most importantly, there should not be any kind of structure around the grill as well. Moreover, it is also important to keep yourself away as well. In other words, for bbq grill safety, it is good to grill in an open area.