I'm playing a Banu Haqim in VTM 5E, and one of the major abilities of my clan is warding. My question is if exclusions to wards can be granted?

I share a house with my coterie, the house is haunted by a few ghosts, and some vamps or ghouls may visit. As written, I'm not seeing anything about granting exclusions from warding effects, but maybe there's a supplemental book that I could convince my ST to include? If it's a hard NO, that's fine, I just want to know how useful wards really are in my situation before I go sinking XP into them.