Generally speaking, it still has an impact, because in geomantic omen, ancestral graves have a great influence on future generations. Feng shui is mainly the feng shui of yin house and yang house. If the house you are talking about is not an ancestral home, the impact will not be too great. I suggest you put the town house or Taoist symbols in the old house. Of course, these must be determined according to the compass and must not be placed at will.
Hope to adopt